hydraulically piloted check valves type hrp · 2016. 4. 7. · b 5585 037/1 b 5585 034/1 # (mm) 0.4...

Hydraulically piloted check valves type HRPwith/without hydraulic pre-relief manifold mounting

D 5116Check valves HRP

September 2007-01

HAWE HydRAulik SESTREITFELDSTR. 25 • 81673 MÜNCHEN

2.5

© 1968 by HAWE Hydraulik

Operating pressure pmax = 700 bar

Flow Qmax = 400 Ipm

1. General information

Versions

o Valves without hydraulic pre-relief,

open the full flow cross section area rather quickly when released. They are suited for all standard operation conditions. A throttling section in the control port dampens the switching movement of the releasing piston, which effectively suppresses pressure surges in most cases. When pressure surges show up during initial operation they can be eliminated by installation of an additional orifice which will reduce the opening speed even more (see sect. 3.2).

o Valves with hydraulic pre-relief,

are more suitable for high pressure and larger consumer volumes. A small ball type check valve located in the spherically ground main valve spool, opens up a small annular gap just prior to the main passage is opened, thereby acting like a throttle enabling a bumpless decompression. The effectiveness of this pre-relief i.e. the smoothness of the decompression depends directly on the open-up speed of the control piston. There is a slight leakage between control port Z and leakage port L, because of the missing control piston sealing at type HRP 7V. An additional orifice (see sect. 3.2) installed in the control line may be found advantageous in some cases.

These valves enable free flow in the one direction but prevent it in reverse direction when the hydraulic release is not actuated either via an external control line or internally via a directly mounted directional seated valve type G..(W..) 3-0 B 0,4 acc. to D 7300 or type WH 1 H(M) acc. to D 7470 A/1. The check valves feature a ball seated design, are made completely made of steel and are suited for mounting onto customer furnished manifolds.

Application

o Blockage of zero-leakage cylinders when used together with leakage prone directional spool valves

o Return flow relief for directional valves during retraction of double acting cylinders

o 2/2-way directional seated valve with hydraulic actuation

D 5116 page 2

2. Available versions, main dataOrder examples:

HRP 2 - B 0,4

HRP 7V - X

HRP 4V - WG 3-0 B 0,4 - WG 230

Table 1: Basic type, size

Table 2: Optional 3/2-way directional seated valve, directly mounted

Table 4: Flow pattern symbols

Table 3: Additional control port X, G 1/4 ISO 228/1 (BSPP) (HRP 7V.. only!)

Standard version

With pre-relief

Nom. size approx.

Flow Qmax approx. (lpm)

Pressure pmax (bar) A, B, Z

L

Control oil volume (cm3)

Mass (weight) approx. (kg)

HRP 1

---

20

700

0.2

0.3

HRP 2

---

35

700

0.4

0.4

HRP 3

HRP 3V

50

500

0.5

0.7

HRP 4

HRP 4V

80

500 3)

HRP 5

HRP 5V

140

500 3)

2.5

1.9 2)

---

HRP 7V(-X)

400

500

13.8

7.9 2)

at port

Provision for optional mounting of a directional seated valve (table 2)

depressurized to the tank

Type HRP 7V: without port X HRP 7V - X: with blanking plate and tapped plug HRP 7V - GZ 3-1 B 0,6 - G 24: port X not plugged

For dimensional drawings, see sect. 4 ++

For mounting at

HRP 4(V)HRP 5(V)

HRP 4(V)HRP 5(V)

HRP 7V

HRP 7V

HRP 7V - X

Basic type

HRP 1, HRP 2 HRP 3(V) HRP 4(V) HRP 5(V)

HRP 4(5) (V) - G(WG) 3-0 B 0,4 -.. HRP .. - WH 1H B 0,4 -.. Simplified illus-tration (for circuit diagrams)

Simplified illustration (for circuit diagrams)

HRP 7V HRP 7V - G(WG) 3-1 B 0,6 -..

HRP 7V - X

Version with directly mounted 3/2-way directional seated valve

HRPshows free flow, while the

solenoid valve is ener-gized

solenoid valve is de-ener-gized

3/2-way directional seated valveacc. to D 7300 acc. to D 7470 A/1 1)

Standard, with plug(For other versions, see the corresponding pamphlets)

G 3-0 B 0,4 - G 24 WH 1H B 0,4 - G 24

WG 3-0 B 0,4 - WG 230 WH 1H B 0,4 - WG 230

G 3-1 B 0,6 - G 24 ---

WG 3-1 B 0,6 - WG 230 ---

GZ 3-0 B 0,4 - G 24 WH 1M B 0,4 - G 24

WGZ 3-0 B 0,4 - WG 230 WH 1M B 0,4 - WG 230

GZ 3-1 B 0,6 - G 24 ---

WGZ 3-1 B 0,6 - WG 230 ---

Nom. voltage UN

24V DC

230V AC 50/60 Hz

24V DC

230V AC 50/60 Hz

24V DC

230V AC 50/60 Hz

24V DC

230V AC 50/60 Hz

- GZ 3-0- WGZ 3-0

- GZ 3-1- WGZ 3-1

- WH 1M

--- Blanking plate; Port X blocked with a tapped plug

1.3

1.2 2)

2) With directional seated valve:

G 3-0 B 0,4-.. = 0.4 kg WG 3-0 B 0,4-.. = 0.4 kg

G 3-1 B 0,6-.. = 0.7 kg WG 3-1B 0,6-.. = 0.7 kg

WH 1H B 0,4-.. = 0.6 kg WH 1M B 0,4-.. = 0.6 kg

Optional orifice in the control port Z (see sect. 3.2)

1) Type WN 1H B 0,4..or WN 1M B 0,4..

may be used also for operating pressure below 320 bar

3) pmax = 450 bar with directly mounted valve type WH 1

D 5116 page 3

3. Additional parameters3.1 General and hydraulic

Design Spring loaded ball seated valve, zero leakage

Pipe connection Via customer furnished manifold

Ports A, B = Consumer (main passage) Z = Control port L = Leakage port (piston cavity relief)

Hydraulic fluid Hydraulic oil acc. to DIN 51524 table 1 to 3; ISO VG 10 to 68 acc. to DIN 51519 Viscosity range: min. approx. 4; max. approx. 1500 mm2/sec

Optimal operation range: approx. 10 ... 500 mm2/sec Also suitable are biologically degradable pressure fluids type HEPG (Polyalkylenglykol) and HEES

(synth. ester) at operation temperatures up to approx. +70°C.

Temperature Ambient: approx. -40 ... +80°CFluid: -25 ... +80°C, pay attention to the viscosity range!

Start temperature down to -40°C are allowable (Pay attention to the viscosity range during start!), as long as the operation temperature during subsequent running is at least 20K higher. Biological degrad-able pressure fluids: Pay attention to manufacturer‘s information. With regard to the compatibility with sealing materials do not exceed +70°C.

Attention: Observe the corresponding notes in pamphlets D 7300 or D 7470 A/1, when a directional seated valve is mounted and the operating temperature exceeds 35°C!

|p-Q-curves For release

Control pressure pcontr (bar) at port Z and PB = 0 bar (pressure at port B)

Con

trol

pre

ssur

e (b

ar)

Pressure p (bar)

Releas

e

main

valve

Release

pre-relief

3.2 Orifice inserts at control port ZOrifice inserts are used to prevent decompression surges (see also sect. 1). It should be kept in mind that a too pronounced damping might cause a prolonged closing time. The optimum orifice diameter can be only found by tests.

Bac

k p

ress

ure |

p (b

ar)

Bac

k p

ress

ure |

p (b

ar)

Hydraulically released

B d AA d B

Flow Q (lpm) Flow Q (lpm)

Oil viscosity during the measurement 60 mm2/s

_ _ _ _ _

For maintaining the valve open

pcontr = a |p + b pB + cstanding for|p = Back pressure (bar) AdB acc. to the |p-Q-curve (below)pB = Pressure (bar) at port B

HRP 1 HRP 2 HRP 3(V) HRP 4(V) HRP 5(V) HRP 7V

a 0.235 0.22 0.21 0.235 0.22 0.32

b 0.03 0.03 0.11 0.07 0.05 0.04

c 4.8 3.7 3.7 3.0 3.7 3.2

Order No. of orifice insert

B 5585 038/1

B 5585 037/1

B 5585 034/1

# (mm)

0.4

0.6

0.8

Coding

B 0,4

B 0,6

B 0,8

HRP 1 ... 5

Type of orifice insert

EB 1-0,4

EB 1-0,6

EB 1-0,8

# (mm)

0.4

0.6

0.8

Coding

B 0,4

B 0,6

B 0,8

HRP 7Orifice insert

The manifold is not available at HAWE!

Order example: HRP 2 - B 0,4

D 5116 page 4

4. Unit dimensions4.1 Basic version

All dimensions in mm, subject to change without notice!

Type HRP 1, HRP 2HRP 3(V), HRP 4(V), HRP 5(V)

Type HRP 7VHRP 7V-X

Hole pattern of the manifold (top view)

Hole pattern of the manifold (top view)

g

Sealing of the ports by O-rings NBR 90 Sh (see table)

Type

HRP 1

HRP 2

HRP 3(V)

HRP 4(V)

HRP 5(V)

L

62

65

70

88

102

B

25

30

35

50

60

H

20

25

35

35

40

a

5.5

7

9

7

10

b

26

24

26

48

48

c

18

22

25

38

42

f

10

12.5

13

17

21

e

21

26

31

37

44

h

36

38.5

42

53

62

i

50

52

56

71

85

l

6

9

9

10.5

13.5

m

3.5

4

4

5

5

d1

5

6.5

9

11

14

g

M4, 5 deep

M5, 5 deep

M6, 10 deep

M8, 10 deep

M8, 10 deep

A and B

6.07x1.78

7.65x1.78

9.2x2.62

12.37x2.62

15.55x2.62

L and Z

4.47x1.78

(Nm)

2.6

5

9

22

22

Max. torque

Sealing by O-rings

Port X (G 1/4) is plugged with type HRP 7V-X!

Sealing of the ports by O-rings:A and B = O-ring 29.2x3 NBR 90 ShL and Z = O-ring 8x1.5 NBR 90 Sh

M16, 18 deep

at HRP 3(V)

Blanking plate with type HRP 7V-X

D 5116 page 5

4.2 Version with 3/2-way directional seated valve

Type HRP 4(V) - G(WG)...-0 B 0,4 - G(WG) ...HRP 5(V) - G(WG)...-0 B 0,4 - G(WG) ...

For missing dimensions of the directional seated valve (size 0), see D 7300 !

Type HRP 4(V) - WH 1H(M) - G(WG)...HRP 5(V) - WH 1H(M) - G(WG)...

For missing dimensions of the directional seated valve type WH 1 see D 7470 A/1 !

Version with plug adapter

Type HRP 7V - G(Z) 3-1 B 0,6 - G ...HRP 7V - WG(Z) 3-1 B 0,6 - WG ...

For missing dimensions of the directional seated valve (size 1), see D 7300 !

Version with plug adapter

Type p1

HRP 4(V)-WH 1.. 13.5

HRP 5(V)-WH 1.. 17

Type p

HRP 4(V)-G(WG).. 14.5

HRP 5(V)-G(WG).. 17

Manual emergency actuation

Plug may be installed rotated by 180°

Plug may be installed rotated by 3x90°, cable gland Suited for

cables #6

1) This dimension depends on the manufacturer and may be max. 40 mm (EN 175 301-803) !

Coding a

G.. 29

WG.. 34

L.. 40

app

rox.

35

Hydraulic pilot operated check valves type RHwith central, favourable-flow design

D 6105Check valves type RH

October 2000-02

HAWE HydRAulik SESTREITFELDSTR. 25 • 81673 MÜNCHEN

2.5

Pressure pmax = 700 bar

Flow Qmax = 160 lpm

1. GeneralThese devices belong to the category of stop valves according to DIN ISO 1219-1, with blocked flow A d B, and free flow B d A. The blocked flow direction A d B can be re-opened by a hydraulic control system.

Application:

o Shutting off zero leakage hydraulic cylinders, when used together with directional spool valves (design related leakage)

o Return flow aid, when the return flow of cylinders with uneven area ratio exceeds the perm. flow rate of the connected directional valve.

o Hydraulically-actuated drain or circulation valve

These valves are available both with and without hydraulic pre-relief

The designs without pre-relief have a ball as valve element, which relatively quickly clears the full flow cross section area after deblocking.These valves are suited for most standard applications. An orifice in the control ports dampens the progression movement of the deblocking piston, adequately suppressing pressure surges (decompression shocks). If, despite this, such surges do occur during the test run, the use of a control line wound onto the throttle coil will provide such additional damping as may be necessary.

Designs with pre-relief are fitted with a spherically-ground valve piston instead of the ball (performing the function of a seated valve), plus a small, integrated ball check valve. When deblocking takes place, this ball check valve is forced up even before the valve piston opens, and clears an orifice area to provide surge-free decompression of the consumer volume. These valves are used mostly for high pressure and large consumer volume applications. The pre-relief effect is more effective, i.e. gentler, the lower the opening speed of the control piston becomes. This is achieved in this case too, as required, by means of a control line designed as a throttle coil. For further details, see section 3 (Maintaining the pressure).

Symbol

Control line port

Control line port

D 6105 page 2

2. Types available, characteristic data

Coding, main data

Design Spring-loaded balI seated valve, zero leakage

Mounting Any, in the pipe work

Installed position Any

Surface coating zinc galvanized

Control pressure pSt (bar) For deblocking (pB = 0 bar) For deblocking the pre-relief

Pressure fluid Hydraulic oil conforming DIN 51514 part 1 to 3: ISO VG 10 to 68 conforming DIN 51519. Viscosity limits: min. approx. 4, max. approx. 1500 mm2/s; opt. operation approx. 10 ... 500 mm2/s. Also suitable are biologically degradable pressure fluids types HEPG (Polyalkylenglycol) and HEES

(Synth. Ester) at service temperatures up to approx. +70°C.

Temperature Ambient: approx. -40 ... +80°C Fluid: -25 ... +80°C, Note the viscosity range ! Permissible temperature during start: -40°C (observe start-viscosity!), as long as the service

temperature is at least 20K higher for the following operation. Biologically degradable pressure fluids: Observe manufacturer‘s specifications. By consideration

of the compatibility with seal material not over +70°C.

|p-Q curves Apply to flow direction B d A and deblocked direction A d B Opening pressure B d A 0.2 ... 0.3 bar

Basic type with pre-relief

Pressurepmax(bar)

Flow Qmax approx. (lpm)

Control volumes approx. (cm3)

Mass (weight)approx. (kg)

Ports ISO 228/1 (BSPP)A, B Z

RH 1

RH 2

RH 3

RH 4

RH 5

---

---

RH 3 V

RH 4 V

RH 5 V

15

35

55

100

160

0.15

0.22

0.4

1

1.8

G 1/4

G 3/8

G 1/2

G 3/4

G 1

0.4

0.4

0.6

1.3

1.8

G 1/4

700

500

to hold open: pSt = pB + |p + k

pB (bar) = Pressure on side B

|p (bar) = Back pressure A d B according to |p-Q curve

k = 10 at RH 1 and RH 2 7 at RH 3(V) 8 at RH 4(V) and RH 5(V)

Oil viscosity during measurement 60mm2/s

pS

t (b

ar)

pS

t (b

ar)

pA (bar) Pressure at connection A d

Flow Q (lpm)

Bac

k p

ress

ure |p

(bar

)

With viscosities exceeding approx. 500 mm2/s, a greater |p rise must be taken into account with the smaller types (RH 1... RH 3).

D 6105 page 3

3. Function modes

o Maintaining the pressure

Preventing a pressure loss at the pressurized cylinder side when directional spool valves with design related leakage are used. To avoid decompression shock, which can occur in particular with large pressurized oil volumes if deblocking takes place suddenly, an orifice is provided in the control port. If this throttling effect is inadequate due to special operating conditions, then a suitable large control line wound onto the throttle coil can be used to reduce the decompression shock. The primary hydraulic pre-relief on types RH..V only takes effect if the control line is designed as described in the form of a throttle coil, and is thus capable of slowing down the switching speed sufficiently.

o Holding raised loads

In cases involving upright cylinders or cylinders hanging downwards in particular, the weight of the load may cause a piston speed equal to or greater than that determined by the pump delivery flow. The effect of this may be that the control pressure required to keep the system open, as shown in sect. 2, cannot be built up. The result of this is valve flutter due to periodic opening and closing. Depending on the load conditions, this can be remedied by exploiting the dampening effect of the control line (as shown in sect. 3) or by braking the load by means of a sequence valve (e.g. type SVC... to D 7000/1) or a throttle valve (type RD to D 2570). See also D 7100 for special load retention valves. Caution: There is a risk that, with cylinders working down wards, in certain circumstances pressure rises may occur on the load side which exceed the load pressure until the stop valve actuates. The reason for this is that the control pressure adds to the load side pressure in a ratio A1/A3. If necessary, our Technical Department should be consulted for recommendations aimed at avoiding this.

o Return relief

This is used if the return flow the directional valve becomes too great when the piston moves in.

The most favourable dimension for the stop valve is determined by taking the flow resistance value |p for A d R from the directional valve data sheet, which would occar at Qe. Then look for the |p-Q-characteristic for the RH valve on the reverse side of the page which most closely approximates the |p value (A d B) already found at the flow rate QR - Qe.

4. Unit dimensions

All dimensions are in mm. Subject to change without notice !

Type Ports ISO 228/1 (BSPP) A, B Z L a b a/f

RH 1 G 1/4 84 31.5 27 24

RH 2 G 3/8 90 32 28.5 27

RH 3 (V) G 1/2 G 1/4 100 36.5 31 32

RH 4 (V) G 3/4 126 45 35.5 41

RH 5 (V) G 1 143 52 38 46

Rigid working resistance

Control line attentuation of a hydraulic throttle coil (2 ... 4 m hydraulic pipe 6x1.5 or 6x2)

a/f

QR = QeA1

A3

Check valves and pre-fill valves type F

D 6960Check valves and pre-fill valves

January 2002-06

HAWE HYDRAULIK SESTREITFELDSTR. 25 • 81673 MÜNCHEN

2.5


Pressure pmax = 400 barFlow Qmax = 7000 lpm

1. General application1.1 Application

Pre-fill valves are available without and (depending on their size)optionally with hydraulic pre-relief. In the case of the standardversion without pre-relief, decompression takes place via a directional control valve with an up-stream orifice or throttle until there is complete decompression in the cylinder (see sect.6.1). Decompression takes place automatically in valves withpre-relief (see sect. 6.2).

As check valves (DIN ISO 1219-1) for free flow in one directionand blocked flow in the opposite direction. (See also sect. 1.4)As pre-fill valves (hydraulic pilot-operated check valves, DIN ISO 1219-1) in the press controllers for further-suction andemptying the press cylinders when closing and opening in rapidtraverse. Zero leakage in the blocked direction (plate-type seatvalves).

When directly fitted onto the cylinder, the valves are clamped between the cylinder base and welding neck flange. For line installation, they are positioned between the front faces of thewelding neck flanges. The seal diameters are selected so that thematerial yield point is not exceeded when normal flanges areused and when the permissible operating pressures given insect. 2.2 are kept to. Sealing rings type A DIN 7603-Cu or flangeseals are used, depending on the size. For details of sealing surface working of flanges, see sect. 2.2

1.2 Surge-free decompression with pre-fill valves

1.3 Installation

1.4 Functional description

Check valve

Pre-fill valve

' Damping with pre-fill valvesThe unblocking operation of the pre-fill valve is basicallydampened by a built-in orifice (SOLEX carburetor nozzle M 5), so as to prevent mechanical impacts on the valve parts.This orifice also causes a delayed closing movement, whichshould be calculated with approx. 0.2 to 0.7sec (dependingon the type), referred to approx. 60 mm2/sec viscosity of thehydraulic oil. In the vast majority of operating instances, thisis no problem since the closing operation is completed with-in the press system's return time. If you require a faster clos-ing time after triggering, e.g. for air cycles, unscrew this throt-tle from the connection piece and replace it as shown with arestrictor check valve BC 1-0.6 in accordance with D 6969 B(applies to type F 25-12. to F 160-76).

' Check valve (also suctionnig of the pre-fill valves)For use as a check valve (type F...), ensure that there are no sudden flow rate rises in the opening direction of the type which canbe expected, e.g. with directional spool valve operations arising from the accumulation capability of the oil volume in lines andconsumers during the switching operation. In the case of pilot-operated valves, e.g. this can be achieved by appropriately setting the switching time. The main purpose of this is to prevent the valve plate being pulled too strongly to its stroke stop whileemploying the max. flow rating of the valve and therefore to prevent the valve plate being damaged by excessive inertia forces.The perm. acceleration time Q = 0 → Q max is approx. 250 msec (approx. 200 msec with F200 - 100)

Type

F 25-12 (V)

F 32-16 (V)

F 40-20 (V)

F 50-25 (V)

F 63-30 (V)

F 80-36 (V)

F 100-45

F 125-60

F 160-76

F 200-100

Orifice

# 0.5

# 0.7

# 0.8

# 1.0

# 1.2

# 1.5

# 1.5

# 6

Orifice

Check valve(specified workingdirection likeillustrated)

D 6960 page 2

Type Plate-type seat valve, spring-loaded

Installation position Any for type F 25.. to F 80.., F 200..only vertically standing or suspended for type F 100.. to F 160..

Pressure pmax F 25.. to F160..: 400 bar; F 200..: 320 bar; permiss. operating pressure depends on installation and utilized welding neck flange, see page 3.

Opening press. po Approx. 0.11 ... 0.12 bar

Control press. pSt For unblocking pSt max = 100 barFor pre-relief ppre-relief = 0.2 pcyl + 7 barFor holding open pSt min = 8 bar (return flow)Min. pressure while closing $ 2,5 bar reset pressure

Pressure fluid Hydraulic oil conforming to DIN 51524, parts 1 to 3; ISO VG 10 to 68 in accord. with DIN 51 519Optimum operation: F 50 ... F 200 10 to approx. 800 mm2/sec

F 40 10 to approx. 400 mm2/secF 32 and F 25 10 to approx. 200 mm2/sec

Viscosity limits not under 4...6 and not above 1500 mm2/sec. Not over 500 mm2/sec for F 32 and F 25.Also suitable are biologically degradable pressure fluids of the type HEPG (Polyalkylenglycol) and HEES(synth. Ester) at operation temperatures up to approx. +70°C.

Temperature Ambient: approx. -40 ... +80°CFluid: -25 ... +80°C, note the viscosity range!Permissible temperature during start: -40°C (observe start-viscosity!), as long as the service tempera-ture is at least 20K (Kelvin) higher for the following operation.Biologically degradable pressure fluids: Observe manufacturer's specifications. By consideration of thecompatibility with seal material not above +70°C

2. Types available 2.1 Type designation, main data

Coding

Checkvalve

withoutpre-relief

with pre-relief

Pre-fill valve Nomi-nalsize

FlowQmax

(lpm)

Controlvolume(cm3)

Mass(weight)approx. (kg)

F 25

F 32

F 40

F 50

F 63

F 80

F 100

F 125

F 160

F 200

25

32

40

50

63

80

100

125

160

200

100

160

250

400

630

1000

1600

2500

4000

7000

4.3

3.6

3.9

4.2

4.2

4.5

4.3

4.3

4.3

4.0

0.45

1

2.1

4

7

12.2

25.4

59.3

113

314

1

1

1.4

2

2.8

4.4

9.9

15.8

43

110

1.1

1.2

1.7

2.4

3.4

5.2

11.7

19.6

50

120

F 25-12

F 32-16

F 40-20

F 50-25

F 63-30

F 80-36

F 100-45

F 125-60

F 160-76

F 200-100

F 25-12 V

F 32-16 V

F 40-20 V

F 50-25 V

F 63-30 V

F 80-36 V

Valve plate opens

at residual pres-

sure in (press)

cylinder

pcyl rest = pSt : k

Control part on pre-fill valvesRelease ratio

(k) F.. F.. - ..(V)

|p-Q curves (recommended values)

Oil viscosity during measurement approx. 60 mm2/sec

Flow during operation

Max. flow acc. to table above=

maxQQ

Suc

tion

resi

stan

ce|p

(bar

)

Suction resistance

Bac

kp

ress

ure|p

(bar

)

Back pressure valve completely opened

D 6960 page 3

Installation method 1:

With standardflanges only up to F63. Above F 63, it isbetter to useflanges with rigidflange leaf corre-sponding to 1c .

In line installation Example: Check valve

2.2 Additional data, depending on installation method

Installationmethod 2:

ConsumerconstructionExample: Pre-fill valvedirectly onbending resi-tant cylinderbase

Reshape flange on valve side to improve flow aroundvalve disc, see also sect. 4

Suction side

Cylinder Pressure side

1a Standard welding neck flange ND 40 or 64, depending on valve size. The bolt sleeves serve directly to center the valve body

1b Spacer sleeves must be produced for standard flanges of the next-highest pressure class due to larger reference diameter, see tablebelow

1c Costomer-furnished flanges with rigid, thick flange leaf to be designed so that the valve can be centered without spacer sleeves by asmany screws as possible.

2a and 2b depending on valve size and application (check or pre-fill valve)

better

F 25 to F 50-25 V F 63 to F 200-100

Utilized as check orpre-fill valve

Utilized ascheck valve

Utilized aspre-fill valve

Flange facial side with com-mon surfacequality

Copper seal ring conf. DIN 7603-Cu-A..

38x44x245x52x260x68x2.575x84x2.5

Requested ma-chining toler-ance for themounting areaof the valve onthe facial side offlange or cylin-der bottom.

2b2a

2b

Type In-stal-la-tion

pzul(bar)

400

400

350

400

250

350

250

350

400

400

250

250

400

400

250

400

300

400

250

400

200

300

400

320

4 / M 16x80

4 / M 16x65

4 / M 16x80

4 / M 16x70

4 / M 16x90

4 / M 16x75

8 / M 16x90

8 / M 16x75

8 / M 20x110

8 / M 20x90

8 / M 16x100

8 / M 16x80

8 / M 20x110

8 / M 20x90

8 / M 20x90

8 / M 24x110 2)

8 / M 27x120

8 / M 30x130

8 / M 30x130

12 / M 30x140

12 / M 33x160

12 / M 33x170

12 / M 33x180

16 / M 36x300

1

2

1

2

1

2

1

2

1

2

1

2

1

2

Flange used 1)Material C 22

C 32x38 DIN 2635 (ND 40)

C 40x44.5 DIN 2635 (ND 40)

C 50x57 DIN 2635 (ND 40)

C 65x76.1 DIN 2635 (ND 40)

E 65x76.1 DIN 2636 (ND 64)

C 80x88.9 DIN 2635 (ND 40)

E 80x88.9 DIN 2636 (ND 64)

Spacer sleeve required

(mm)D d h

27 20.5 33

--- --- ---

Screws Material 8.8

3)pieces / size

Torque

MA (Nm)

Suct. pipe e.g.DIN 2448seamless(non-binding)

38x2.6

44.5x2.6

57x2.9

76.1x2.9

88.9x3.2

108x36

133x4

159x4.5

219.1x5.9

273x6.3

F 25...

F 32...

F 40...

F 50...

F 63...

F 80... 2

F 100.. 2

F 125.. 2

F 160..

F 200..

2

2

C 100x108 DIN 2635 (ND 40)

E 100x108 DIN 2636 (ND 64)

E 125x133 DIN 2636 (ND 64)

E 125x133 DIN 2637 (ND 100)

E 150x159 DIN 2636 (ND 64)

E 150x159 DIN 2637 (ND 100)

E 200x219.1 DIN 2636 (ND 64)

E 200x219.1 DIN 2637 (ND 100)

E 200x219.1 DIN 2638 (ND 160)

see example in sect. 4.3

210

210

380

380

1400

410

700 2)

1000

1100

630

1300

2000

2300

32 20.5 28.5

Permissible pressure

---

31 2)

---

38

---

42

---

50

50

---

---

24.5

---

30.5

---

30.5

---

33.5

33.5

---

---

38

---

43.5

---

49.5

---

68.5

68.5

---

1) If pressure surges can beexpected due tothe way inwhich the sys-tem is opera-ted, it is advan-tageous to usethe relevanthigher statedflange - ND-class - forgreater than F 50...

2) If a DIN 2637flange (ND 100)is used for F80,the sleeve41x27.5x38 and8 screwsM27x110,(MA=1000Nm)must be used

3) In the case ofcustomer-fur-nished flanges,it is better touse larger num-bers of smallerscrews com-bined with atleast an equaloverall forceand, if possible,a rigid (thick)flange leaf

Type F 63.. F 80.. F 100.. F 125.. F 160.. F 200

KANTSIL- FK 343 FK 349 FK 433 FK 441 FK 447 O-ringseal ring 290.00x7.0 90Sh

Profil- 6960 898 A 6960 898 B 6960 898 C 6960 898 D 6960 898 E Back-up ringseal ring 6960 221

Type

F 25..F 32..F 40..F 50..

1a 2a

1b

1c

2b

2a

1a 1c

2b

2a

2b

1b

Suction side

Pressurized side

+

D 6960 page 4

From F 80... onwards, it is better to use flanges with rigid flange leafas described in in sect. 2.2.

When hollowing out r, ensure that there is still 1... 1.5 mm thicknessup to the converse surface line of the largest internal diameter.

3. Using standard flangesFlange and pipe preparation (non-binding suggestion)

The pressure pipe dimension for instal-lation methods 1 as described in sect.2.2 are selected on the basis of the relevant safety details

The following standards can be used as a basis for working out the pressur pipes:DIN 2413-1, -2: Steel pipes: Calculating the wall thickness against internal

pressureDIN 2445-1, -2: Seamless steel pipes for dynamic loadDIN 1629 ( ISO 9329-1): Seamless pipes made of unalloyed steelsDIN 2448 ( ISO 4200): Seamless pipesDIN 2391-1, -2: Seamless precision steel pipes

Both sides must be regarded as pressure sides when the valve is being used as a check valve.

Ensure in the normal way that both parts are joined together without misalignment.

for F 63....... F 200,for F 25...... F 50as per DIN 2635and DIN 2636

when di pipe

< di flange

Pressureflange C 22 is the usual material for welding neck flanges in accordance

with the various standards sheets in accordance with DIN 17 200.

Assembly space required for axial travel of the line Side mounting without axial travel of the pipeline

Pre-fill valve,suction side

Check valve (in pressure line)

This disassembly possibility is achieved by way of an addi-tional spacer ring (to be furnished by the customer, not scopeof delivery). External diameter same as corresponding the pre-fill valve.

F 63 ... F 200 invalve body area,for F 25...F 50as per DIN 2635and DIN 2636

Suction side

Machiningsame as inillustrationon the left

Detail with “A”:

F 25 to F 50-25 (V)

F 63 to F 200-100

For seals,groove dimension see sect. 4.1

11.51.5110t2

4.34.01.71.71.21.2t1 * 0.1

1088873544335d1

614752384532342330201912H 1)

Type

F25

F25

-12(

V)

F32

F32

-16(

V)

F40

F40

-20(

V)

F50

F50

-25(

V)

F63

F63

-30(

V)

F80

F80

-36(

V)

1) H =Minimumdimension

flange

pipe

pipe

(For missing datasee above)

Relief groove, inside diameter approx. #da + 4, 1.5...2 mmwide, approx. 1.5 deep, with a groove towards the outside, approx. 2 wide, 1 deep

Type

F25

...

F32

...

F40

...

F50

...

F63

...

F80

...

F10

0..

F12

5..

F16

0..

F20

0..

d1

t

35

6

43

7

54

9

73

11

88

12

(108)

(15)

(132)

(25)

(168)

(30)

(215)

(40)

(275)

55

F10

0

F10

0-45

F12

5

F12

5-60

F16

0

F16

0-76

F20

0-10

0

Type

H 1) 55 76 78 106 115 165 155

d1 132 168 215 275

t1 *0.1 5.8 5.8 5.6 5.5

t2 1.5 1 0 2

1c

D 6960 page 5

4. Dimensions of units

4.1 Check valve F 25 to F 160

All dimensions are in mm, subject to change without notice !

Situation for fitting copper ring F 25-12(V) to F 50-25(V):

Flangeside

Valve side

For using flangeseals as from F 63-30(V):

Front face offlange refinished,see sect. 3

1) Bore in cylinder base or pressure flange, see #d1 in sect. 32) Full opening as from approx. 80% of Qmax

1)

4.2 Pre-fill valve F 25-12. to F 160-76

See sect. 4.1 for missing details type

Pre-relief forF25-12V up toF 80-36V

---52---120233G 1/4G 1/2F 160-76

---39---88155G 1/4G 3/8F 125-60

---32---69118G 1/4G 3/8F 100-45

45°27975697.5G 1/4G 1/4F 80-36(V)

45°22855083G 1/4G 1/4F 63-30(V)

45°17.5734372G 1/4G 1/4F 50-25(V)

60°16.5673960G 1/4G 1/4F 40-20(V)

60°15.5593255G 1/4G 1/4F 32-16(V)

60°14.5542343G 1/4G 1/4F 25-12(V)

xbad2H2ZA 3)

Type

3) Can also be used as pressure line port after un-doingthe tappet plug

SW19 = a/f19

ConnectionISO 228/1(BSPP)

Type D3 D4 H1 h da di s 2) s1 t ±0.1 t1

F 25 83 26 36 26 44 +0.1 37.5 -0.1 5.5 5.5 1.2 0

F 32 93 32 45 27 52 +0.1 44.5 -0.1 7.5 7 1.2 1

F 40 108 41.5 48.5 28 68 +0.1 59.5 -0.1 10 9 1.7 1

F 50 128 53 59 29 84 +0.1 74.5 -0.1 12 11 1.7 1

F 63 143 64 69 33.5 104.3 +0.2 89 -0.2 14 12 4.0 1.5

F 80 169 77.5 83 38.5 123.8 +0.2 109.3 -0.3 17 15 4.3 1.5

F 100 212 95.5 97 44 152.6 +0.2 134.4 -0.3 22 22 5.8 1.5

F 125 248 127 127 51 190.6 +0.2 171 -0.3 30 30 5.8 1.5

F 160 310 163 182 70 241.2 +0.2 220 -0.3 37 37 5.6 1.5

r 0.6

D 6960 page 6

5. Pre-fill valves type F 63.. to F 125.. (addition)

Pre-fill valves type F 63... to F 125... (supplement). The check valvesand pre-fill valves F 63.. to F 125.. are available as a special version with soft iron packing rings if it is not possible to producethe surface quality of the mating surfaces on the flange or cylinderbase required for the standard flange seal and outlines in sect. 2.2. It must be kept in mind that standard welding neck flanges cannotbe used. Rather, customer-furnished flanges with a suitably rigidflange leaf for transferring the screw forces to the soft iron packingring are necessary. The screws are best arranged so that their in-ternal converse surface line centers the valve body.When ordering, add in plain text that soft iron packing rings No....(see table) are to be supplied instead of the flange seal.

Flange with rigidflange leaf

Pre-fill valveF63 to F125

Cylinder

Soft iron packing ring,special version

Type

Min. pre-basing force (total) in built-in condition

Permissible pressure (bar)

Order No. of the soft iron packing ring

DimensionsTolerance # di + 0.5

# da - 0.3Thickness * 0.2

F 63..

560 kN

400

6960 998 A

92x104x5

F 80..

752 kN

400

6960 998 B

112.5x123x5.3

F 100..

1117 kN

400

6960 998 C

138x152.1x6.8

F 125..

1688 kN

400

6960 998 D

174x189.8x6.8

4.3 Pre-fill valve F 200-100

Ports A, Z = G 1/2 (BSPP)

ExampleSuction flange (general, not binding)

Material: St 52-3

1)

1) Mounting hole4x M12, 22 deep

D 6960 page 7

6. Typical circuit diagram of a top-ram pressThe control shown, represent non-binding, greatly simplified examples and are only intended to show the interaction of the pre-fill valves with the other units, including decompression as described in Item 1.2.

6.1 Pre-fill valves without pre-relief

BC.. D 6969 BRDF.. D 7540 4)

DG.. acc.toD 5440

RD.. acc. toD 7540

ZR

E 1

Direct. control valve 3)G 3-0 B acc. to D 7300WN1H/B 0.7 acc. to D 7470A/1

Directional valve bank 3)VB.. acc. to D 7302BWN(H).. acc. to D 7470B/1

ADM 1-... 6)

SV 2

m1 m2 m3 m4 m5

Pre-fillvalveswithoutpre-relief

Seq.No.

Movement Pump Valve Pressure switchDG

with set operat.press., contactmaking for sequence 2

0(a) 1)

0(a) 2)

0 0(a) 2)

0

0 0 0 0 0

a a 0 a 0

Ready for operat.(Pu. idling)

Pressuremaintenance

Decom-pression

Rapid traverseup

Open

Rapid traversedown (fall.) andpress. build-up

A timer for the pressing time can be startedsimultaneously with contact making for operating pressure (timer shown as ZR)

Start time relay ZR 4) and pump motor e.g.by run down timer from sequence 1

m1 and m5 → a a through time relay ZR

Pumps and valves off through E 1

(a) - setting for possible series connection by the DG. Observe starting instructions for the pump motor 1)

on

on

0 0 a 0 0on

0 0 0 0 0off

off(on)

a4) 5)

0 a(0)

0 aon

Note

0

1

2

3

4

5

------

---

---

---

1) e.g. via time relay. Set it that m1 = a only after the pump motor is started up. Switch over to / while m1 = 0 for !- / start.

2) (a) e.g. for pressed material which is still flexible during the pressing period. The pressure switch unit switches the pump back on whenthe pressure drops 1). See for example D 5440 for restarting pressures.

3) Observe the max. permissible operation pressure! (see corresponding pamphlets)

4) The orifice size determines the decompression time; it should be selected in such a way (acc. to the |p-Q-curve), that the flow via theorifice during start of decompression (current pressure at the cylinder) does not exceed the perm. flow rating of the valve m3. The decompression period at ZR must be sufficiently set, that m1 → a is activated after the pressure in the cylinder is securely removed.Example: Directional valve bank m1 ... m4 = VB 21AM-... acc. to D 7302, perm. Qmax = 25 lpm. Max. cylinder pressure pcyl = 350 bar(end of sequence 2), selected restrictor check valve RDF 31. The suited orifice -# is roughly 1.4 mm (Q , 20 lpm) i.e. RDF 31/1.4 acc. tothe |p-Q-curve in D 7540 for 350 bar. The estimated decompression time for a press cylinder with a volume of 50 lpm will be roughly 6 to 7 sec. The decompression time for a certain volume of a press cylinder Vcyl (l) and a certain RDF- orifice #d (mm) can be roughly estimated

5) If the pump motor is started by the timer from sequence 3, e.g. !-/, ensure that the switchover time from ! to / takes place during the decompression time sequence 3 4). Otherwise, the !/ contactor would also have to actuate m1→a when switching over to / if theswitchover time was longer. The time relay ZR is, then, not absolutely essential.

6) ADM... (D 7458) to limit the control pressure to $100 bar (sect. 2.1). Necessary if the pressure for rapid traverse ↑ (sequence 4) is greaterthan 100 bar.

Safeguarding against pressuretranslation (e.g. error m2 → 0 insequence 1), pressure must bemin. 30 %. higher than the max.self induced load pressure

See note infootnote 5)page 7

2cylcyl d/pV014.0t ⋅≈

1) e.g. via time relay. Set it that m1 = a only after the pump motor is started up. Switch over to / while m1 = 0 for ! - / start.

2) Deblocking of the pre-relief in the pre-fill valves begins after the pump is started when m1→a is switched. During de-compres-sion, the pump runs against the pressure set in SV 1. The opening of the pre-fill valves, i.e. sequence 4 (rapid traverse up) is automatically set when the pressure in the cylinder has fallen to the value pcyl = pcontr : k. The control pressure pcontr must correspond to at least the pressure ppre-relief as described in sect. 2.1 (< 100 bar) here, e.g. set in the pressure reducing valveADM 1... in accordance with D 7458 or ADM 11... in accordance with D 7120.

3) The decompression time t (sec.) down to a certain pressure p (bar) for a press cylinder volume Vcyl (l) can be roughly estimated,when the pre-relief (F 25-12V to F 80-36V) is utilized.

4) Pressure in the SV 3 some what greater than pcontr , should serve only as safety against any control fault in the ADM... if the pressure setting in SV 1 and the return pressure during opening (sequence 4) is much greater than pcontr

5) It may be necessary for very short sequence times, to enable quick draining of the control cavity causing quick closure of thepre-fill valve by utilizing a by-pass check valve (sequence 5 → 1). Mostly utilized together with damping BC1 acc. to section 1.4.A suitable by-pass check valve is type RK 1G acc. to D 7445.

D 6960 page 8

6.2 Pre-fill valves with pre-relief

Pressureswitch unitDG in acc. toD 5440

Direct. control valve G 3-0 B acc. to D 7300WN1H / B 0.7acc. to D 7470A/1

ADM 1-..- 4)

SV 3 4)

SV 2

Pre-fill valvewith pre-relief 3)

$ 100 bar > pSte.g. MV 41E D 7000/1

E1

Directional valve bank VBacc. to D 7302BWN(H) acc. toD 7470 B/1

m1 m2 m3 m4

Seq.No.

Movement Pump Valves Pressure switchunit DG

contact making forsequence 2 withoperating pressure

0(a) 1)

0(a)

0(a)

0

0 0 0 0 --- ---

a a a 0

Ready for operation (idling)

Maintainpressure

Decompression

Rapid tra-verse up

Open

Rapid traversedown (fall) andpress. build-up

The timer for the pressing time can bestarted simultaneously with contactmaking

Contact making e.g. due to elapsedtimer setting. Follow starting instruc-tions for the pump motor ! 2)

Follows sequence 3 automatically 2)

Pumps and valves off through E 1

(a) - setting in the event of any series connection by the DG.Follow starting instructions for pump motor !

on

on

a 1) 0 0 a ---on

0 0 0 0 ---off

off(on)

a 0 0 a ---on

Note (example)

0

1

2

3

4

5

5)

Safeguarding against pressure translation (e.g. error m2 → 0 in sequence 1), pressure must be min. 30 %. higher than the max. selfinduced load pressure

( )ppV042.0t cylcyl −⋅≈ ( ).ppV0042.0t cylcyl −⋅≈

Line rupture protection valves type LB

D 6990Line rupture protection valve LB

May 2007-01

HAWE HydrAuLik SESTREITFELDSTR. 25 • 81673 MÜNCHEN

2.5


1. General

Line rupture protection valves prevent an uncontrollable, accelerated movement of a loaded hydraulic actuator (drop) when the hydraulic back-pressure is lost as a result of rupture in the pressurized line or pipe connection. The line rupture protection valve must be screwed directly into or onto the pressurized oil inlet port of the hydraulic actuator to be safeguareded.The type LB is a plate valve whose valve disc is raised off the valve seat by spring action in the neutral state, thereby maintaining an open flow-through cross section of variable width. The flow-through resistance and the back-pressure action at the valve disc in the flow-through direction B d F (operation or actuating direction) generate a force which during normal operation does not exceed the spring counterforce: the valve remains open. If the flow-through increases after rupture due to the driving load, the flow forces will exceed the spring force and the valve will close immediately.Line rupture protection valves are available in two models which, in case of rupture, i.e. when the valve plate is closed, differ as follows:

The valve plate fits very closely onto the ring-shaped seat. Any leakage that may occur through the screw thread has no appreciable effect. In order to keep this to a minimum, see note in section 5. The load stays in the stroke position reached at the moment of breakdown. The disruption can be eliminated immedi-ately, or after supporting (underpining) the load, according to the safety risk. The valve is then reopened by feeding pressure oil into the actuator.

The valve plate contains an orifice hole with a fixed diameter (see table 3 in sect. 2). An oil flow, previously estimated in accordance with the |p-Q-char-acteristics, can move through this orifice hole form B to F irrespective of the magnitude of the load, thereby gradually lowering the load to the ground. The disruption can be eliminated thereafter.

1.1 Valve for complete load holding

1.2 Valve for gradual load lowering

Symbols

simplified detailed

simplified detailed


Flow rate QA max = 4 ... 160 lpm

In-line versions

Type LB...G

Type LB...F

Screw-in versions

Type LB...C

Schematic cross-sectional view

D 6990 page 2

2. Available versions, main data

Order examples: LB 2 C - 40LB 3 F 0.8 - 63LB 3 C 1.0 7/8-14 UNF - 50

Table 2: Design version

Design version Coding and illustration

Screw-in version

In-line version

C

GF

Screw-in valve size 1 to 3 installed via a tapped reducer (table 1) in the next higher dimension housing (G or F) size 2 to 4.

Application example: Adaptation to the port size of other hydraulic devices being utilized e.g. LB 3/2 G-..

Table 3: Optional orifice

LB 1

LB 2

LB 3

LB 4

o o o o

o o o o o

o o o o o o

o o o o o

Suited for 0,5 0,8 1,0 1,2 1,5 2

Coding for orifice diameter (& #) only available for valves acc. to section 1.2

Standard

With tapped reducer

1) G...A for tapped journal, G... for tapped port (see also note in section 5!)

2) All sizes of version C, available only size 3 of version F also

3) Other response flows (intermediate values) should be set by the customer acc. to

section 4. The same applies to corrections if required (adaptation to local condi-tions). Qmax will be set by HAWE, when a response flow specification is missing.

Basic type and size

Port size 1) ISO 228/1(BSPP)

LB 1..

LB 2..

LB 3..

LB 4..

LB 2..

LB 3..

LB 4..

LB 14..

LB 26..

LB 28..

LB 30..

LB 32..

LB 47..

LB 2/1..

LB 3/2..

LB 4/3..

G 1/4 (A)

G 3/8 (A)

G 1/2 (A)

G 3/4 (A)

3/4-16 UNF

7/8-14 UNF

1 1/16-12 UN

M 14x1.5

M 16x1.5

M 18x1.5

M 20x1.5

M 22x1.5

M 27x2

G 3/8 (A)

G 1/2 (A)

G 3/4 (A)

o o o o o

o o o o o o

o o o o o o

o o o o o o o o

o o o o o o

o o o o o o

o o o o o o o o

o o o o o

o o o o o o

o o o o o o

o o o o o o

o o o o o o

o o o o o o o o

o o o o o

o o o o o o

o o o o o o

-4 -6.3 -10 -16 -25 -40 -50 -63 -80 -100 -125 -160

Response flow coding QA (lpm) 3)

Table 1: Basic type, size and response flow

Serie

Version Suffix for UNF thread 2)

Version with UNF thread conf. SAE J 514

With tapped reducer

With metric fine thread DIN 13T6 (only available for design ver-sion C !)

3/4-16 UNF

7/8-14 UNF

1 1/16-12 UN

o o

Flow rate QLB (lpm)

Bac

k p

ress

ure |

p (b

ar)

Flow rate QLB (lpm)

Bac

k p

ress

ure |

p (b

ar)

D 6990 page 3

3. Additional parameter3.1 General and hydraulic

Installation position and direction Any; B connected to the one consumer side, that should be safeguarded against rupture.

Pressure pmax 500 bar

Mass (weight) approx. g Basic type coding LB 1 LB 2 LB 3 LB 4

Screw-in version 6 12 21 45

In-line version G, F 70 100 170 390

Pressure fluid Hydraulic oil conforming DIN 51524 part 1 to 3: ISO VG 10 to 68 conforming DIN 51519. Viscosity limits: min. approx. 4, max. approx. 1500 mm2/s; opt. operation approx. 10 ... 500 mm2/s. Also suitable for biological degradable pressure fluids types HEPG (Polyalkylenglycol) and HEES

(Synth. Ester) at service temperatures up to approx. +70 °C.

Temperature Ambient: approx. -40 ... +80°C Fluid: -25 ... +80°C, Note the viscosity range ! Permissible temperature during start: -40°C (Note start-viscosity!), as long as the service temperature is

at least 20K higher for the following operation. Biological degradable pressure fluids: Note manufacturer‘s specifications. By consideration of the

compatibility with seal material not over +70°C.

|p-Q-curvesOil viscosity during tests approx. 60 mm2/s

|p-Q-characteristics for both directions of flow (B d F or F d B) dependent on the set length S. In the direction B d F, the valve closes at the point of intersection of the |p-Q-charcteristics for a given S and the dot-dash line. Intermediate values must be interpolated. The curves apply to valves according to sect. 1.1 (QA = QLB ). In case of valves with an orifice (sect. 1.2), the actual actuating flow is increased by the proportion flowing through the orifice hole (see the example below), although the influence is minimal (QA = QLB + QBl ).

Orifice characteristics (approximate values) for determining the actual actuating flow

Orifice characteristics for determining the load lowering speed upon actuating

Example: LB 3C 1.5; set at S = 1.5 mm & QLB = 55 lpm (see also sect. 4)

Flow rate QBl (lpm)Flow rate QBl (lpm)

|p-orificeLB 3

The influence of the orifice is nor-mally minimal

Bac

k p

ress

ure

|p

(bar

) up

on a

ctua

tion

of th

e LB

val

ve

Bac

k p

ress

ure |

p

(bar

) , lo

ad p

ress

ure

Applying to all LB versions

Additional for valves with optional orifice (B d F)

Actual actuating flow

Actuating flow (BdF)


Flow rate QLB (lpm)

Bac

k p

ress

ure |

p (b

ar)


Flow rate QLB (lpm)

Bac

k p

ress

ure |

p (b

ar)

Actuat-ing flow (BdF)

Actuating flow limit

D 6990 page 4

3.2 Valve setting

With viscosities above approx. 500 mm2/s, the operating point will gradually change towards lower flow rate values; when the actuating flow is small (small width of gap S), the differ-ence may be greater than with larger ones. When necessary, the setting can be corrected, if the viscosities are not in any case kept < approx. 500 mm2/s through the choice of appropriate oils (oil should be changed when operating outdoors in winter) or by other means (such as pre-heating).

Loosen the nuts, select two identical feeler gauges or a caliper gauge, thighten the nuts by hand until they are snug, remove the gauges and carefully tighten the locknut.

Actuating flow QA (lpm)

Oil viscosity during measurem. 60 mm2/s

Gap

wid

th “

S”

(mm

) 4. Recommended values for actuating flow from section 3.2

The determining factor in setting the value QA for the actuating flow is the return flow Qret. from the consumer during undisturbed operation in direction B d F. In practice, a ratio QA: Qret. % 1.5 for hand-operated directional control valves, or , 2 for solenoid- operated or other, quick-action directional valves, is found to be a useful recommended value.With large-volume hydraulic cylinders and/or high load burdens it may occasionally be found that with actuating flow ratios selected on the basis of these recommended values there is an undesired closing of the line rupture protection valve during test running of the normal functions of the equipment. This is caused by the decompression surge from the consumer when the direc-tional control valve is actuated. If it is not possible to adjust the switching time of the directional control valve, the decompression surge should be suppressed by means of a restrictor on the discharge side. The restrictor should be selected on the basis of its |p-Q-characteristic curve such that with the largest load burden to be expected for the equipment the flow rate is smaller than the actuating flow for the line rupture protection valve, but the same as (example on the left in section 4.1) or greater than (example on the right in section 4.1) the return flow Qret.. It should be noted that this restrictor is not to be fitted in the pipe section monitored by the line rupture protection valve, but in an unendangered section (e.g. in the return pipe). Where there are very big load differences (e.g. between maximum possible load and empty weight), there may be a reduction in the lifting/lowering speed with lesser loads, depending on the |p-Q-characteristic curve of the restrictor.

4.1 Examples of use

Line rupture protection valve in the lifting device with lift/lower valve as described in pamphlet D 7032

Line rupture protection valve in lifting device with solenoid- operated directional control valve (e.g. as in pamphlet D 7300) for lowering, and drop-rate braking valve (as in pamphlet D 6920). This combination is possible because of the actuating delay of the flow valve; during this time the line rupture protection valve is effective should any fault occur.

Throttle valve setting gives Qret. with highest load, then QA is pos-sible up to 1, 2 times the value

Type HSV 21...

Line rupture protection valve type LB...

Endangered pipe section

Endangered pipe section

Drop-rate braking valve type SB...S

Line rupture protection valve type LB...

Restrictor, e.g. as in pamphlet D 7300 sect. 3.1 and pam-phlet D 6465 or ED.. as in pamphlet D 7540

The drop-rate brake determines the return Qret. ( = QSB )

form pump

form pump

D 6990 page 5

5. Dimensions of units All dimensions are in mm, subject to change without notice !

Screw-in version type LB..C Tapped mounting hole 1)

In-line version

Type LB..F Type LB..G

End of thread to have start shape E(1 1/2 - 2-turn start, start taper , 23°, see also FETTE -Grinding book, for example)

Appropriate assem-bly tools must be-self-manufactured in accordance with the master gauge for holes

Torque:

Type LB 1 LB 2 LB 3 LB 4

Nm (approx.) 8 12 18 23

1) A core drill # (acc. to diameter D in the table below) should be selected to minimize the thread leakage2) Version with UNF thread conforming SAE J 514, only available as design version C (all sizes) and F (size 3)!

LB 1..

LB 14 C

LB 2..

LB 26 C

LB 28 C

LB 2..

LB 3..

LB 30 C

LB 32 C

LB 3..

LB 4..

LB 47 C

LB 4..

G G1

G 1/4 G 1/4 A

M 14 x 1.5

G 3/8 G 3/8 A

M 16 x 1.5

M 18 x 1.5

3/4-16 UNF 2)

G 1/2 G 1/2 A

M 20 x 1.5

M 22 x 1.5

7/8-14 UNF 2)

G 3/4 G 3/4 A

M 27 x 2

1 1/16-12 UNF 2)

17.5 8.1 9.5 5.5 8.5 2.4 22 33 11.5 +0.1

17.5 8.1 9.5 5.5 8.5 2.4 22 33 12.5 +0.1 -- -- -- -- -- --

21 10.6 12.5 5.5 11 3.5 26 37 15.0 +0.1

21 10.6 12.5 5.5 11 3.5 26 37 16.4 +0.1 -- -- -- -- -- --

25 12.1 15 7 13 4.5 30 45 18.7 +0.1

25 12.1 16.2 7 13 4.5 30 45 20.4 +0.1 -- -- -- -- -- --

30.5 17.1 17.5 7 16 6 38 54 24.2 +0.1

30.5 17.1 17.5 7 16 6 38 54 -- -- -- -- -- --

L l d a/f1 LK d1 t t1 D 1)

LB.. C Type Connect. threadISO 228/1 (BSPP)

LB.. F LB.. G

L1 l1 a/f2 L2 l1 a/f2

50 12 19 48 12 19

58 12 22 52 12 22

65 14 27 60 14 27

102 19.3 30

78 16 36 72 16 36

a/f 1

a/f 2 a/f 2

14.4 +0.1

17.5 +0.1

18.4 +0.1

20.4 +0.1

25.0 +0.1

24.9 +0.1

Shuttle valves type WV and WVCValves for pipe connectionscrew-in valves

D 7016Shuttle valves type WV, WVC

May 2013-00


2.5





3. Additional data

The shuttle valve is a stop valve with two blockable inlets and one outlet. The inlet side with the higher pressure is connected to the outlet and the other inlet is blocked (DIN ISO 1219-1). The function is automatic.

Connection manner

Coding #d 1)

(mm)

Pressurepmax(bar) 2)

FlowQmax(lpm)

Mass (weight)approx. (kg)

Schematic sectional drawing

For pipe connection

WV 6-S

WV 8-S

WV 10-S

WV 12-S

WV 14-S

WV 16-S

WV 18-L

WVC 1

WVC 11with PTFE threaded seal

6

8

10

12

14

16

18

---

---

6

15

25

40

60

100

125

6

120

170

230

290

320

390

350

7

Screw-in valve

500

315

1) Precesion tube, seamless, DIN 2391 and 1629, Sheet 42) mechanical joint properly mounted

Design Seated ball valve

Installation position Any, freely suspended in the pipe system (WV.. ) or screwed into a manifold (WVC..)

Pipe connection In the case of WV, via cutting ring fittings. The manufacturer‘s assembly instructions must beobserved. e.g. ERMETO

Static overload capacity > 2 x pmax

Burst pressure: WV 6 ... WV 10 > 2000 bar, WV 12 ... WV 16 > 1600 bar, WV 18 > 1000 bar

Pressure fluid Hydraulic oil conforming DIN 51524 part 1 to 3: ISO VG 10 to 68 conforming DIN 51519. Viscosity limits: min. approx. 4, max. approx. 1500 mm2/sec;

opt. operation: WV 6-S and WVC.. approx. 10 ... 300 mm2/sec WV 8-S to WV 16-S approx. 10 ... 500 mm2/sec A greater increase in the flow resistance can be expected for viscosities exceeding 300 mm2/sec in the

case of WV 6-(8)S and WVC.. and at viscosities over 500 mm2/sec in the case of WV 8-S and WV 10- S. Also suitable for biological degradable pressure fluids types HEPG (Polyalkylenglycol) and HEES

(Synth. Ester) at service temperatures up to approx. +70°C.

Temperature Ambient: approx. -40 ... +80°C; Fluid: -25 ... +80°C, Note the viscosity range! Permissible temperature during start: -40°C (Note start-viscosity!), as long as the service tempera-

ture is at least 20K higher for the following operation. Biological degradable pressure fluids: Notemanufacturer‘s specifications. By consideration of the compatibility with seal material not over +70°C.

Inlet Inlet

Outlet

700

315

D 7016 page 2

|p-Q curve Type WV 6-S to WV 16-S Type WVC 1 and WVC 11

Oil viscosity during the measurement 65 mm2/sec

4. Unit dimensions All dimensions are in mm and subject to change without notice !

5. Application example

Type WV 6-S to WV 18-L Type WVC 1 Type WVC 11

For mounting hole of cus-tomer furnished manifolds, see schematic drawing in sect. 2.

Mounting hole

Type L h #d SW

WV 6-S 62 31 6 17

WV 8-S 64 32 8 19

WV 10-S 68 34 10 22

WV 12-S 76 38 12 24

WV 14-S 80 40 14 27

WV 16-S 86 43 16 30

WV 18-L 80 40 18 32

Combined remote control of prop. directional spool valves (e.g. type PSL and PSV acc. to D 7700 ++ ) via pressure reducing valves type FB and KFB acc. to D 6600.

Bac

k p

ress

ure

|p

(bar

)


SW 5Torque$ 6 Nm

SW 5Torque$ 6 Nm

Control pressure source

SW = a/f

Cartridge check valve type RK and RB

D 7445

September 2013-00

HAWE HydrAulik SESTREITFELDSTR. 25 • 81673 MÜNCHEN

2.5


1. GeneralThese check valve are screwed into single offset threaded boreholes. The housings are sealed by means of O-rings at the shoulder formed by the 118° drill point angles.The valve housing is made up of two parts, which are connected to each other by flanging (RK) or by press fitting (RB), in between these two parts there is a spring-loaded, hardened and polished hemisphere. The valve seat part is likewise hardened and ground.

Installed in blocking direction

Type RK

Flow Qmax = 120 lpm


Installed in free flow direction

Type RB

D 7445 Page 2

Table 1b: Basic type, size type RB

Thread spec.: G...- ISO 228/1, M...- DIN 13 T6 (metric fine thread)

Coding Thread(* BSPP)

Flow (lpm)

Pressure (bar)

Opening pressure (bar)

Version with housing intended (table 2)

RB 0 G 1/8 10 700 0.05 ● ●

G E F

RB 1 G 1/4 0.15 ● ● RB 1-1 G 1/4 20 700 0.9 ● ● RB 14 M14x1.5 0.15 ● ● RB 2 G 3/8 50 700 0.07 ● ● RB 28 M18x1.5 0.07 ● ● RB 3 G 1/2 80 500 0.17 ● ● RB 32 M22x1.5 0.17 ● ● RB 4 G 3/4 120 500 0.10 ● ● RB 47 M27x2 0.10 ● ●

2. Available versions, main dataExamples: RB 2 Srew-in version

RK 2 G Version with housing

Coding Thread(* BSPP)

Flow (lpm)

Pressure (bar)

Opening pressure (bar)

Version with housing intended (table 2)

RK 0 G 1/8 * 0.05 ● ●

G E F

RK 1 G 1/4 * 0.18 ● ● RK 1-...

Opening pressure 0.5, 1...8, 10 bar

G 1/4 * 0.5, 1, 2, 3, 4, 5, 6, 7, 8, 10

● ●

RK 14 M14x1.5 20 700 0.18 ● ●

RK 16 M16x1.5 0.18 ● ● RK 2 G 3/8 * 0.20 ● ●

RK 14-...

Opening pressure 0.5, 1...8 bar

M14x1.5 0.5, 1, 2, 3, 4, 5, 6, 7, 8

● ●

RK 2-...

Opening pressure 1...6 bar

G 3/8 * 1, 2, 3, 4, 5, 6

● ●

RK 28 M18x1.5 50 700 0.20 ● ● RK 28-...


M18x1.5 1, 2, 3, 4, 5, 6

● ●

RK 3 G 1/2 * 0.25 ● ● RK 3-...


G 1/2 * 1, 2, 3, 4, 5

● ●

RK 32 M22x1.5 80 500 0.25 ● ● RK 32-...


M22x1.5 1, 2, 3, 4, 5

RK 4-...

Opening pressure 0,5...10 bar

0.5, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10

RK 47-...

Opening pressure 0,5...10 bar

0.5, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10

● ●

RK 4 G 3/4 * 0.10 ● ● ● ●

● ●RK 47 M27x2 120 500 0.10

Table 2 Table 1a: Basic type, size type RK

Thread spec.: G...- ISO 228/1, M...- DIN 13 T6 (metric fine thread)

RK 08 M8x1 5 700 0.2

RB 08 M8x1 5 700 0.2

RK 0-0,4 G 1/8 *10 700

0.4 ● ●

D 7445 Page 3

3. Further data

Mass (weight) approx. (g)Type

Srew-in version

RK 0 RK 1 RK 1-... RK 2 RK 2-... RK 3 RK 3-... RK 4 RB 0 RB 1 RB 2 RB 3 RB 4RK 08 RK 14 RK 28 RK 32 RK 47 RB 14 RB 28 RB 32 RB 47 RK 16

3 5 30 12 40 20 60 45 3 5 12 21 45

Type

Version with housingRK(RB ) ... G..

RK ... E..RB ... F..

RK 0RB 0

30

30

RK 1..RB 1..

75

60

RK 2..RB 2..

105

85

RK 3..RB 3..

160

140

RK 4..RB 4..

340

300

Table 2: Version with housing intended for inline installation Ports G, E: ISO 228/1 G-JIS, E-JIS: JIS B 2351

Installed position Any

Hydraulic fluid Fluids acc. to DIN 51524 table 1 to 3; ISO VG 10 to 68 acc. to DIN 51519 Viscosity range: min. approx. 4; max. approx. 1500 mm2/s Optimal operation range: approx. 10 ... 500 mm2/s Also suitable are biologically degradable pressure fluids of the type HEPG (Polyalkylenglycol) and

HEES (synth. Ester) at operation temperatures up to approx. +70°C.

Temperature Ambient: approx. -40 ... +80°C Fluid: -25 ... +80°C, pay attention to the viscosity range! Start temperature down to -40°C are allowable (Pay attention to the viscosity range during start!),

as long as the operation temperature during subsequent running is at least 20K higher. Biological degradable pressure fluids: Pay attention to manufacturer‘s information. With regard to the compat-ibility with sealing materials do not exceed +70°C.

Suited for

RK

RK

RB

RB

Coding and illustration

GG-JIS

EE-JIS

F

|p-Q curve

Viscosity during the measuring approx. 50 mm2/s

Flow rate Q (lpm) Flow rate Q (lpm)

Flow

res

ista

nce

|p

(b

ar)

Flow

res

ista

nce

|p

(b

ar)

D 7445 Page 4

* (BSPP)

17.5 10 5.8 4.6 3.5 18.5

30 14.4 24 - 3.5 - 19 18.77x1.78 80

17.5 10 5.8 4.6 3.5 18.5

30 14.4 - 3.5 - 19

If strong shocks or vibrations are expected within the system in which the valves are fitted, it is advisable, as a precautionary measure, to prevent the valves from loosening by securing them with Loctite when they are screwed into the boreholes provided.

4. Dimensions of units All dimensions are in mm, subject to change without notice!

4.1 Screw-in version

RK 0 G 1/8 A *

RK 0-... G 1/8 A *

RK 1 G 1/4 A *

RK 14 M14x1.5

RK 1-... G 1/4 A *

RK 14-... M14x1.5

RK 16 M16x1.5

RK 2 G 3/8 A *

RK 28 M18x1.5

RK 2-... G 3/8 A *

RK 28-... M18x1.5

RK 3 G 1/2 A *

RK 32 M22x1.5

RK 3-... G 1/2 A *

RK 32-... M22x1.5

RK 4 G 3/4 A *

RK 4-... G 3/4 A *

RK 47 M27x2

RK 47-... M27x2

L l1 d d1 d2 h L.K. O-ring NBR 90 Sh Nm

Type G

9 4.5 11.5 2.6 2.2 1.5 8.8-0.1 9x1 15

16 7.5 11.45 - 1.8 - 9-0.1 9x1 -

9 6 14 2.6 2.8 1.5 11 10x1.5 -

11.2 6.5 15 3.4 3 2.5 11 11x1.5 20

20 12.5 15 - 2 - 12.1 11x1.5 -

13.5 8 18.5 4.3 3.8 3.0 14.2-0.1 14x1.5 40

24 15.5 18.7 - 2.9 - 15-0.1 14x1.5 -

RB 08 M8x1

RB 0 G 1/8 A

RB 1 G 1/4 A

RB 1-1 G 1/4 A

RB 14 M14x1,5

RB 2 G 3/8 A

RB 28 M18x1,5

RB 3 G 1/2 A

RB 32 M22x1,5

RB 4 G 3/4 A

RB 47 M27x2

Type G L l1 d d1 h a/f O-ring NBR 90 Sh Nm

6.5 - 6.9 - - 4 5x0.8 (70 Sh) 6

7.9 4.5 8.6 1.7 1.3 5 6x1 8

10.3 5 11.6 2.2 1.3 7 9x1 15

11.7 7 15 3 2 6 11x1.5 20

13.2 7.5 18.5 3.4 2.5 8 14x1.5 40

17.05 10 24 5.8 3.8 12 18.77x1.78 80

Type RK...

Type RB...

Side F Side B

Side B Side F

O-ring

O-ring

RK 08 M8x1 5.5 - 6.9 - 1.3 - 4.8 5x0.8 (70 Sh) 6

7.2 3.8 8.6 2 1.5 1.3 6.8 6x1 8

a/f

D 7445 Page 5

* (BSPP)

Mounting holes:for external line connection via pipe fittings

for internal ducts

Type G D

RK 08, RB 08 M8x1 7

RK 0, RK 0-..., RB 0 G 1/8 * 8.7

RK 1, RB 1, RB 1-1 G 1/4 * 11.8

RK 14, RB 14 M14x1.5 12.5

RK 1-... G 1/4 * 11.8

RK 14-... M14x1.5 12.5

RK 16 M16x1.5 14.5

RK 2, RB 2 G 3/8 * 15.25

RK 28, RB 28 M18x1.5 16.5

RK 2-... G 3/8 * 15.25

RK 28-... M18x1.5 16.5

RK 3, RB 3 G 1/2 * 19

RK 32, RB 32 M22x1.5 20.5

RK 3-... G 1/2 * 19

RK 32-... M22x1.5 20.5

RK 4, RK 4-..., RB 4 G 3/4 * 24.5

RK 47, RK 47-..., RB 47 M27x2 25

Type G D

RK 08, RB 08 M8x1 7

RK 0, RK 0-..., RB 0 G 1/8 * 8.7

RK 1, RB 1, RB 1-1 G 1/4 * 11.8

RK 14, RB 14 M14x1.5 12.5

RK 1-... G 1/4 * 11.8

RK 14-... M14x1.5 12.5

RK 16 M16x1.5 14.5

RK 2, RB 2 G 3/8 * 15.25

RK 28, RB 28 M18x1.5 16.5

RK 2-... G 3/8 * 15.25

RK 28-... M18x1.5 16.5

RK 3, RB 3 G 1/2 * 19

RK 32, RB 32 M22x1.5 20.5

RK 3-... G 1/2 * 19

RK 32-... M22x1.5 20.5

RK 4, RB 4 G 3/4 * 24.5

RK 47, RB 47 M27x2 25

D1 t t1 2) x 1)

4 17 15 2

5 16.5 14.2 2.3

8 22 19 3

6 36 31 5

8 22 19 3

9 24.5 21.5 3

9 40 37 3

12 29 25.5 3.5

12 46 42.5 3.5

16 35 31 4

16 52 48.5 3.5

D1 t t1 2) x 1) a1 d2

4 8 6 2 8.5 4

5 11 8.7 2.3 9 4

8 14 11 3 11 6

6 28 23 5 19 6

8 14 11 3 11 6

9 17 14 3 13 8

9 32.5 29.5 3 22 8

12 22 18.5 3.5 16 12

12 39 35.5 3.5 26.5 12

16 28 24 4 21 14

Required depth depends on the tapped plug, cover plate etc. to be used

Example: Tapped plug conf. DIN 908

1) Thread run-out x is a must. It may be shorter but not longer (precondition for perfect seal via the O-ring)

2) Fully cut-out thread

D 7445 Page 6

Type D2 a d3 L.K. Tool

RK 08 6.9 1 1.2 4.8

RK 0 8.6 2 1.2 6.9±0.05 W7-223/37

RK 1, RK 14 11.5 2.5 1.8 8.9-0.1 W7-223/23

RK 16 14 2.5 2.5 11-0.1

RK 2, RK 28 15 2 2.5 11.1-0.1 W7-223/24

RK 3, RK 32 18.5 4 3 14.3-0.1 W7-223/25

RK 4, RK 47 24 4 4 18.6±0.1 W7-223/26

RK 1-..., RK 14-... 11.45 2.5 1.6 8.95±0.02 W7-223/56

RK 2-..., RK 28-... 14.8 3 1.8 12.1±0.02 W7-223/58

RK 3-..., RK 32-... 18.5 4 2.7 14.95±0.02 W7-223/55

RK 4-..., RK 47-... 24 6 3.3 19±0.1 W7-223/66

Recommended: 4 pcs. at the circumference

4.3 Mounting tool for type RK (customer furnished)

4.2 Version with housing

Housing G, G-JIS

Type RK Type RB

Housing E, E-JIS Housing F

For missing data see housing E

RK 1 with fitting seal G 1/4 NBR; all others feature a cutting edge

Type

RK 0, RK 0-..., RB 0

RK 1, RB 1

RK 1-...

RK 1-...

RK 14, RB 14

RK 14-...

RK 16

RK 2, RB 2

RK 2-...

RK 2-...

RK 28, RB 28

RK 28-...

RK 3, RB 3

RK 3-...

RK 3-...

RK 32, RB 32

RK 32-...

RK 4, RB 4

RK 4-...

RK 4-...

RK 47-...

#D

14

19

19

19

19

19

21

22

22

24

24

23

26

27

27

27

27

32

32

41

32

L1

28

43

50

47

42

50

44

44

50

58

44

60

52

63

72

52

63

60

80

85

80

D1

12.5

-

-

-

-

17

20

20.5

20.5

-

23

20.5

24

25

-

26

25

30

30

-

30

L

30

46

55

58

46

55

50

50

60

58

50

60

56

68

72

56

68

65

82

85

82

G G1

* (BSPP) * (BSPP)

G 1/8 * G 1/8 A *

G 1/4 * G 1/4 A * G 1/4 * G 1/4 A * G 1/4-JIS * G 1/4 A-JIS *

M14x1.5

M14x1.5

M16x1.5

G 3/8 * G 3/8 A *

G 3/8 * G 3/8 A *

G 3/8-JIS * G 3/8 A-JIS *

M18x1.5

M18x1.5

G 1/2 * G 1/2 A *

G 1/2 * G 1/2 A *

G 1/2 JIS * G 1/2 A-JIS *

M22x1.5

M22x1.5

G 3/4 * G 3/4 A *

G 3/4 * G 3/4 A *

G 3/4 JIS * G 3/4 A-JIS *

M27x2

l

8

12

13

12

12

12

12

12

13

12

12

13

14

14

16

14

14

16

16

17

17

a/f

14

19

19

19

19

19

22

22

22

24

24

24

27

27

27

30

27

36

36

41

36

Nm

(housing)

20

40

40

-

40

-

80

80

-

-

80

-

150

-

-

150

-

200

-

-

-

Ports B, F ISO 228/1 or JIS B 2351

a/f a/f

Check valves type CRK, CRB, and CRHto screw-in into simple to manufacture tapped holes

D 7712Check valves CRK, CRB, CRH

September 2007-00© 1995 by HAWE Hydraulik


2.5

Other valves with similar lay-out:' Pressure valves type CMV, CSV D 7710 MV' Pressure controlled 2-way directional valve type CNE D 7710 NE' Check valves and throttles type CAV D 7711' Throttle and restrictor check valves type CQ, CQR, and CQV D 7713' Flow control valves type CSJ D 7736' Pressure reducing valves type CDK D 7745' Pressure-dependent shut-off valves type CDSV D 7876



These check valves fall into two groups:- Check valves type CRK (B) and- Releasable check valves type CRH. In principle all these valves are to be screwed into simply shaped tapped holes of a manifold body. The sealing of the inlet to theoutlet takes place at the contact area between the facial sealing edge of the screwed-in end of the valve body and the steppedshoulder of the core diameter the location thread. Any standard steel drill (point angle 118°) automatically forms this stepped shoul-der when the core diameter is drilled. Therefore reaming of the hole and bevels to help the seals slip in are not necessary.The sealing of the attached valve and its fixing at the manifold body are via a sealing nut featuring a special thread seal and an O-ring.

' Check valves type CRK and CRB

These valves enable free flow in one direction and block flow inopposite direction. Type CRK blocks in direction of B → A, typeCRB in direction of A → B.For system pressure up to 500 bar and max. flow from 30, 50,and 80 lpm (depending on size). Their field of application are allstandard control purposes within hydraulic circuits where direc-tional valves are operated more or less regularly. These checkvalves must not be utilized in circuits with a high frequent loadchanges.

' Releasable check valves type CRH

These valves enable free flow in direction B → A and block it indirection A → B. The blocked flow direction A → B may openedhydraulically (released)For system pressure up to 500 bar and max. flow of 20, 30, and 55 lpm (depending on size).

Application:To block circuits with zero leakage where leakagefree hydrauliccylinders are used together with directional spool valves with inherent leakage.As return flow aid: If the return flow of a double acting cylinderexceeds the permissible flow of the directional valve, due to unequal area ratios, during retracting operations. As a hydrauli-cally drain or idle circulation valve.

The full flow cross-section is quickly opened, when the valve is hydraulically released. The diameter of the control duct in the mani-fold body should be quite small, giving the same effect as a throt-tling pipe. This prevents pressure surges, when the valve is quick-ly opened at high pressure. The throttling section is located in theinlet Z of valves size 3.Size 3 is also available with pre-release for high pressure and highconsumer volumes. A small check valve is opened, sufficiently andsmoothly reducing the pressure via the throttle section within theconsumer before the main valve is opened. An additional throttlewithin the control duct increases the effectivity of the pre-release.

Type CRBType CRK

Type CRH

D 7712 page 2


3. Further data

Order examples: CRK 1 - 1/4 Check valve

CRH 2 Releasable check valve

CRH 3 V Releasable check valve with pre-release

Nomenclatureand symbol

Basic typeand size

Pres-sure pmax

(bar)

FlowQmax

approx.(lpm)

Release ratio

Main - Pre-valve release

Max. torque

Valve body Sealing nut(Nm) (Nm)

Tapped journal metric ISO-fine threadDIN 13 T6

Check valve

Releasablecheck valve ...3V is withpre-release

Checkvalvethread direction

30

50

80

30

50

20

30

55

55

---

---

---

---

---

2.6:1

2.6:1

2.5:1

2.5:1

---

---

---

---

---

---

---

---

10:1

M 16x1.5

M 20x1.5

M 24x1.5

M 16x1.5

M 20x1.5

M 16x1.5

M 20x1.5

M 24x1.5

M 24x1.5

40 35

50 40

70 60

40 35

50 40

40 35

50 40

70 60

70 60

500

500

500

Nomenclature Spring loaded check valve cartridgeDesign Depending on type either ball seated or disc designMaterial Steel body gas nitrided, sealing nut zinc galvanized, internal functional parts hardened and ground,

balls made of bearing quality steelInstallation position AnyPort coding A, B = Consumer connections

Z = Control connection with type CRHOnly for circuit diagrams and assembly instructions, see schematic drawings sect. 1 or dimen-sional drawings sect. 4. The port codings are not stamped onto the valve body.

Mass (weight) Type CRK(B) 1 = 70 g Type CRH 1 = 60 gCRK(B) 2 = 110 g CRH 2 = 90 gCRK 3 = 130 g CRH 3(V) = 150 g

Static overload capacity Approx. 2 x pmax at tightened state and with sealing nut locked

Leakage with type CRH 1(2,3) There is a negligible leakage between connections Z → B due to the thread clearance, but this doesn't effect the blocked consumer side A, not apparent with type CRH 11(21,31)

Direction of flow Type CRK: A → B free flow, B → A blocked stateCRB: A → B blocked, B → A free flow stateCRH: B → A free flow state

A → B is blocked leakagefree in idle position (connection Z not pressurized), if pressure at B is none or lower than at AA → B free flow, if control pressure at Z opens the valve (also see control pres-sure pcontr)

Pressure pmax = 500 bar see also sect. 2)Opening pressure Type CRK: approx. 0.5 bar (CRK 1/1.3: approx. 1.3 bar), Type CRB: approx. 0.07 ... 0.1 barA → B resp. B → A CRH: approx. 0.5 barControl pressure pcontr

(guideline) with type CRH For releasing

to maintain open positionpcontr = pB +|p + k

pB = pressure at B

|p = flow resistance A → Bacc. to |p-Q-curve

k = 4.5 type CRH 14.0 type CRH 22.5 type CRH 3

Con

trol

pre

ssur

ep

cont

r(b

ar)

Pressure pA (bar)

2) Version with additional thread and con-trol piston seal

CRK 1

CRK 1/1.3

CRK 2

CRK 3

CRB 1

CRB 2

CRH 1CRH 11 2)CRH 2CRH 21 2)CRH 3CRH 31 2)CRH 3V 1)CRH 31V 2)

1) Version with pre-relief

Version with connection block (only with type CRK 1 and CRB 1)Ports A and B ISO 228/1 (BSPP)

- 1/4 = G 1/4- 3/8 = G 3/8

Connection block - 1/4 = +260 g- 3/8 = +260 g

D 7712 page 3

Pressure fluid Hydraulic oil conforming DIN 51524 part 1 to 3: ISO VG 10 to 68 conforming DIN 51519.Viscosity limits: min. approx. 4, max. approx. 1500 mm2/s;opt. operation approx. 10... 500 mm2/s.Also suitable are biologically degradable pressure fluids type HEPG (Polyalkylenglycol) and HEES(Synth. Ester) at service temperatures up to approx. +70 °C.

Temperature Ambient: approx. -40 ... +80 °CFluid: -25 ... +80°C, Note the viscosity range !Permissible temperature during start: -40°C (observe start viscosity!), as long as the service tempera-ture is at least 20K higher for the following operation.Biologically degradable pressure fluids: Observe manufacturer's specifications. By consideration of thecompatibility with seal material not over +70 °C.

|p-Q curves

Viscosity duringmeasurements ap-prox. 60 mm2/s

4. Unit dimensions All dimension in mm and subject to change without notice!

4.1 Check valves type CRK and CRB

Type

CRK 1.CRB 1

CRK 2CRB 2

CRK 3

KantsealDKAR00016-N90



G D D1 h t t1 t2 a/f 1 a/f 2 a/f 1 a/f 2

M 16x1.5 22 8 31 13 11 18 22 8 35 40

M 20x1.5 24 10 35 14 13 20 24 10 40 50

M 24x1.5 30 11 38 16 13 22 30 12 60 70

14x1.78

17.17x1.78

21.95x1.78

Max. torque(Nm) 2)

Thread seal O-ringAU 90 Sh

1) A sinking is required, if the pressure at B exceeds 100 bar!

2) This applies to manifolds made of steel, nodu-lar cast iron or other common materials, e.g. light alloy.

3) Sinking max #16+0.2 type CRK1, CRB1#20+0.2 type CRK2, CRB2#24+0.2 type CRK3, CRB3

Bac

kp

ress

ure|p

(bar

)


Mounting holeNote:For tapped plugs for the mounting hole, see section 4.3

O-ring

a/f 2a/f 1

Thread seal

Ports A and B ISO 228/1 (BSPP)CRK 1 (CRB 1) - 1/4 = G 1/4CRK 1 (CRB 1) - 3/8 = G 3/8Surface zinc galvanized

Version with connection blockCRK1. (CRB1) - 1/4 (3/8)

D 7712 page 4

4.2 Check valves with hydraulic release type CRH

Type

CRH 1

CRH 2

CRH 3CRH 3V

L l1 l2 a/f1 a/f2 a/f1 a/f2

47 12 1 22 8 35 40

53 13 1 24 10 40 50

61 14 1.5 30 12 60 70

Max.torque (Nm) 2)

Type

CRH 1

CRH 2

CRH 3CRH 3V

Max. #thread

G chamfer D D1 D2 d t t1 t2 t3

M 16x1.5 16+0.2 22 14.3 11 8 17 13 22 13

M 20x1.5 20+0.2 24 18.3 14 10 18 15 24 17

M 24x1.5 24+0.2 30 22.3 16 11 21 16 28 19

Type

CRH 11

CRH 21

CRH 31(V)

Max. #thread

G chamfer D D1 d t1 t2 t3

M 16x1.5 16.5 22 14.5 11 5 13 9

M 20x1.5 20.5 24 18.2 12 4.5 15 9

M 24x1.5 24.5 30 22.5 16 5.5 16 12

Type

CRH 1

CRH 2

CRH 3CRH 3V

O-ringAU 90 Sh

14x1.78

17.17x1.78

21.95x1.78

O-ringNBR 90 Sh

10x1.5

12.42x1.78

15.3x2.4

Thread seal




Note:For tapped plugs for the mounting hole, see below!

1 2 seal ring at CRH .1

7735 003

7735 013

7735 023Mounting hole

4.3 Tapped plugsMounting holes in the manifold may be blocked if required by tapped plugs, e.g. if uniform manufactured manifolds should beequipped with or without cartridge valves depending on application.

Passage open Passage blocked

Tapped plug

Seal ring

Tapped blockage/plug combination

For dimensions of themounting holes see sect.4.1 and 4.2

a/f4 a/f6 a/f5

Sealing nut a/f1

Additional seal-ring at typeCRH .1

Threadseal

a/f2

O-ring <

Sealing edge

O-ring ;

Type CRH 1(2, 3, 3V)

Mounting hole

Type CRH 11(21,31, 31V)

D 7712 page 5

1) A sinking is required, if the pressure at B exceeds 100 bar!2) This applies to manifolds made of steel, nodu lar cast iron or other common materials, e.g. light alloy3) For thread seals and O-rings see sect 4.1 and 4.2

Passage openTapped plug Seal ring

Passage blockedTapped blockage/plug combination complete 3)

Tapped part Counter/sealing nut

Typeand size

CRK 1.CRB 1

CRH 1CRH 11

CRK 2CRB 2

CRH 2CRH 21

CRK 3

CRH 3CRH 3VCRH 31CRH 31V

Max.DIN 910 SW4 torque

(Nm) 2)

M 16x1.5 17 40 A 16x22x1.5

M 20x1.5 19 50 A 20x24x1.5

M 24x1.5 22 70 A 25x30x2

M 16x1.5 + seal ring = approx. 40 gM 20x1.5 + seal ring = approx. 60 gM 24x1.5 + seal ring = approx. 100 g

8 40 22 35

10 50 24 40

12 70 30 60

DIN 7603-CuMax. Max. torque

Drawing no. a/f5 torque a/f6(Nm) 2) (Nm) 2)

Z 7712 003

Z 7735 011

Z 7712 013

Z 7715 019

Z 7710 029

Z 7715 029

Z 7712 003 = approx. 60 gZ 7735 011 = approx. 65 gZ 7712 013 = approx. 85 g


Mass(weight)

Check valves type CRK, CRB, and CRHto screw-in into simple to manufacture tapped holes

D 7712Check valves CRK, CRB, CRH

September 2007-00© 1995 by HAWE Hydraulik


2.5

Other valves with similar lay-out:' Pressure valves type CMV, CSV D 7710 MV' Pressure controlled 2-way directional valve type CNE D 7710 NE' Check valves and throttles type CAV D 7711' Throttle and restrictor check valves type CQ, CQR, and CQV D 7713' Flow control valves type CSJ D 7736' Pressure reducing valves type CDK D 7745' Pressure-dependent shut-off valves type CDSV D 7876



These check valves fall into two groups:- Check valves type CRK (B) and- Releasable check valves type CRH. In principle all these valves are to be screwed into simply shaped tapped holes of a manifold body. The sealing of the inlet to theoutlet takes place at the contact area between the facial sealing edge of the screwed-in end of the valve body and the steppedshoulder of the core diameter the location thread. Any standard steel drill (point angle 118°) automatically forms this stepped shoul-der when the core diameter is drilled. Therefore reaming of the hole and bevels to help the seals slip in are not necessary.The sealing of the attached valve and its fixing at the manifold body are via a sealing nut featuring a special thread seal and an O-ring.

' Check valves type CRK and CRB

These valves enable free flow in one direction and block flow inopposite direction. Type CRK blocks in direction of B → A, typeCRB in direction of A → B.For system pressure up to 500 bar and max. flow from 30, 50,and 80 lpm (depending on size). Their field of application are allstandard control purposes within hydraulic circuits where direc-tional valves are operated more or less regularly. These checkvalves must not be utilized in circuits with a high frequent loadchanges.

' Releasable check valves type CRH

These valves enable free flow in direction B → A and block it indirection A → B. The blocked flow direction A → B may openedhydraulically (released)For system pressure up to 500 bar and max. flow of 20, 30, and 55 lpm (depending on size).

Application:To block circuits with zero leakage where leakagefree hydrauliccylinders are used together with directional spool valves with inherent leakage.As return flow aid: If the return flow of a double acting cylinderexceeds the permissible flow of the directional valve, due to unequal area ratios, during retracting operations. As a hydrauli-cally drain or idle circulation valve.

The full flow cross-section is quickly opened, when the valve is hydraulically released. The diameter of the control duct in the mani-fold body should be quite small, giving the same effect as a throt-tling pipe. This prevents pressure surges, when the valve is quick-ly opened at high pressure. The throttling section is located in theinlet Z of valves size 3.Size 3 is also available with pre-release for high pressure and highconsumer volumes. A small check valve is opened, sufficiently andsmoothly reducing the pressure via the throttle section within theconsumer before the main valve is opened. An additional throttlewithin the control duct increases the effectivity of the pre-release.

Type CRBType CRK

Type CRH

D 7712 page 2


3. Further data

Order examples: CRK 1 - 1/4 Check valve

CRH 2 Releasable check valve

CRH 3 V Releasable check valve with pre-release

Nomenclatureand symbol

Basic typeand size

Pres-sure pmax

(bar)

FlowQmax

approx.(lpm)

Release ratio

Main - Pre-valve release

Max. torque

Valve body Sealing nut(Nm) (Nm)

Tapped journal metric ISO-fine threadDIN 13 T6

Check valve

Releasablecheck valve ...3V is withpre-release

Checkvalvethread direction

30

50

80

30

50

20

30

55

55

---

---

---

---

---

2.6:1

2.6:1

2.5:1

2.5:1

---

---

---

---

---

---

---

---

10:1

M 16x1.5

M 20x1.5

M 24x1.5

M 16x1.5

M 20x1.5

M 16x1.5

M 20x1.5

M 24x1.5

M 24x1.5

40 35

50 40

70 60

40 35

50 40

40 35

50 40

70 60

70 60

500

500

500

Nomenclature Spring loaded check valve cartridgeDesign Depending on type either ball seated or disc designMaterial Steel body gas nitrided, sealing nut zinc galvanized, internal functional parts hardened and ground,

balls made of bearing quality steelInstallation position AnyPort coding A, B = Consumer connections

Z = Control connection with type CRHOnly for circuit diagrams and assembly instructions, see schematic drawings sect. 1 or dimen-sional drawings sect. 4. The port codings are not stamped onto the valve body.

Mass (weight) Type CRK(B) 1 = 70 g Type CRH 1 = 60 gCRK(B) 2 = 110 g CRH 2 = 90 gCRK 3 = 130 g CRH 3(V) = 150 g

Static overload capacity Approx. 2 x pmax at tightened state and with sealing nut locked

Leakage with type CRH 1(2,3) There is a negligible leakage between connections Z → B due to the thread clearance, but this doesn't effect the blocked consumer side A, not apparent with type CRH 11(21,31)

Direction of flow Type CRK: A → B free flow, B → A blocked stateCRB: A → B blocked, B → A free flow stateCRH: B → A free flow state

A → B is blocked leakagefree in idle position (connection Z not pressurized), if pressure at B is none or lower than at AA → B free flow, if control pressure at Z opens the valve (also see control pres-sure pcontr)

Pressure pmax = 500 bar see also sect. 2)Opening pressure Type CRK: approx. 0.5 bar (CRK 1/1.3: approx. 1.3 bar), Type CRB: approx. 0.07 ... 0.1 barA → B resp. B → A CRH: approx. 0.5 barControl pressure pcontr

(guideline) with type CRH For releasing

to maintain open positionpcontr = pB +|p + k

pB = pressure at B

|p = flow resistance A → Bacc. to |p-Q-curve

k = 4.5 type CRH 14.0 type CRH 22.5 type CRH 3

Con

trol

pre

ssur

ep

cont

r(b

ar)

Pressure pA (bar)

2) Version with additional thread and con-trol piston seal

CRK 1

CRK 1/1.3

CRK 2

CRK 3

CRB 1

CRB 2

CRH 1CRH 11 2)CRH 2CRH 21 2)CRH 3CRH 31 2)CRH 3V 1)CRH 31V 2)

1) Version with pre-relief

Version with connection block (only with type CRK 1 and CRB 1)Ports A and B ISO 228/1 (BSPP)

- 1/4 = G 1/4- 3/8 = G 3/8

Connection block - 1/4 = +260 g- 3/8 = +260 g

D 7712 page 3

Pressure fluid Hydraulic oil conforming DIN 51524 part 1 to 3: ISO VG 10 to 68 conforming DIN 51519.Viscosity limits: min. approx. 4, max. approx. 1500 mm2/s;opt. operation approx. 10... 500 mm2/s.Also suitable are biologically degradable pressure fluids type HEPG (Polyalkylenglycol) and HEES(Synth. Ester) at service temperatures up to approx. +70 °C.

Temperature Ambient: approx. -40 ... +80 °CFluid: -25 ... +80°C, Note the viscosity range !Permissible temperature during start: -40°C (observe start viscosity!), as long as the service tempera-ture is at least 20K higher for the following operation.Biologically degradable pressure fluids: Observe manufacturer's specifications. By consideration of thecompatibility with seal material not over +70 °C.

|p-Q curves

Viscosity duringmeasurements ap-prox. 60 mm2/s

4. Unit dimensions All dimension in mm and subject to change without notice!

4.1 Check valves type CRK and CRB

Type

CRK 1.CRB 1

CRK 2CRB 2

CRK 3




G D D1 h t t1 t2 a/f 1 a/f 2 a/f 1 a/f 2

M 16x1.5 22 8 31 13 11 18 22 8 35 40

M 20x1.5 24 10 35 14 13 20 24 10 40 50

M 24x1.5 30 11 38 16 13 22 30 12 60 70

14x1.78

17.17x1.78

21.95x1.78

Max. torque(Nm) 2)

Thread seal O-ringAU 90 Sh

1) A sinking is required, if the pressure at B exceeds 100 bar!

2) This applies to manifolds made of steel, nodu-lar cast iron or other common materials, e.g. light alloy.

3) Sinking max #16+0.2 type CRK1, CRB1#20+0.2 type CRK2, CRB2#24+0.2 type CRK3, CRB3

Bac

kp

ress

ure|p

(bar

)


Mounting holeNote:For tapped plugs for the mounting hole, see section 4.3

O-ring

a/f 2a/f 1

Thread seal

Ports A and B ISO 228/1 (BSPP)CRK 1 (CRB 1) - 1/4 = G 1/4CRK 1 (CRB 1) - 3/8 = G 3/8Surface zinc galvanized

Version with connection blockCRK1. (CRB1) - 1/4 (3/8)

D 7712 page 4

4.2 Check valves with hydraulic release type CRH

Type

CRH 1

CRH 2

CRH 3CRH 3V

L l1 l2 a/f1 a/f2 a/f1 a/f2

47 12 1 22 8 35 40

53 13 1 24 10 40 50

61 14 1.5 30 12 60 70

Max.torque (Nm) 2)

Type

CRH 1

CRH 2

CRH 3CRH 3V

Max. #thread

G chamfer D D1 D2 d t t1 t2 t3

M 16x1.5 16+0.2 22 14.3 11 8 17 13 22 13

M 20x1.5 20+0.2 24 18.3 14 10 18 15 24 17

M 24x1.5 24+0.2 30 22.3 16 11 21 16 28 19

Type

CRH 11

CRH 21

CRH 31(V)

Max. #thread

G chamfer D D1 d t1 t2 t3

M 16x1.5 16.5 22 14.5 11 5 13 9

M 20x1.5 20.5 24 18.2 12 4.5 15 9

M 24x1.5 24.5 30 22.5 16 5.5 16 12

Type

CRH 1

CRH 2

CRH 3CRH 3V

O-ringAU 90 Sh

14x1.78

17.17x1.78

21.95x1.78

O-ringNBR 90 Sh

10x1.5

12.42x1.78

15.3x2.4

Thread seal




Note:For tapped plugs for the mounting hole, see below!

1 2 seal ring at CRH .1

7735 003

7735 013

7735 023Mounting hole

4.3 Tapped plugsMounting holes in the manifold may be blocked if required by tapped plugs, e.g. if uniform manufactured manifolds should beequipped with or without cartridge valves depending on application.

Passage open Passage blocked

Tapped plug

Seal ring

Tapped blockage/plug combination

For dimensions of themounting holes see sect.4.1 and 4.2

a/f4 a/f6 a/f5

Sealing nut a/f1

Additional seal-ring at typeCRH .1

Threadseal

a/f2

O-ring <

Sealing edge

O-ring ;

Type CRH 1(2, 3, 3V)

Mounting hole

Type CRH 11(21,31, 31V)

D 7712 page 5

1) A sinking is required, if the pressure at B exceeds 100 bar!2) This applies to manifolds made of steel, nodu lar cast iron or other common materials, e.g. light alloy3) For thread seals and O-rings see sect 4.1 and 4.2

Passage openTapped plug Seal ring

Passage blockedTapped blockage/plug combination complete 3)

Tapped part Counter/sealing nut

Typeand size

CRK 1.CRB 1

CRH 1CRH 11

CRK 2CRB 2

CRH 2CRH 21

CRK 3

CRH 3CRH 3VCRH 31CRH 31V

Max.DIN 910 SW4 torque

(Nm) 2)

M 16x1.5 17 40 A 16x22x1.5

M 20x1.5 19 50 A 20x24x1.5

M 24x1.5 22 70 A 25x30x2

M 16x1.5 + seal ring = approx. 40 gM 20x1.5 + seal ring = approx. 60 gM 24x1.5 + seal ring = approx. 100 g

8 40 22 35

10 50 24 40

12 70 30 60

DIN 7603-CuMax. Max. torque

Drawing no. a/f5 torque a/f6(Nm) 2) (Nm) 2)

Z 7712 003

Z 7735 011

Z 7712 013

Z 7715 019

Z 7710 029

Z 7715 029



Mass(weight)

Check valves

1 | www.hawe.de | 05-2013-3.5

Check valves type B

These check valves type B are available in three housing designs with internal and/or

external thread, enabling in-line installation for any requirement.

Use as a foot valve for the suction pipes of pumps is possible due to the low opening

pressures.

Features and benefits:

■ Max. flow 160 lpm

■ Pipe installation

Intended applications:

■ General hydraulics

Nomen-

clature:

Check valve

Design: Individual valve for in-line installation

pmax: 500 bar

Qmax: 15 ... 160 lpm

Design and order coding example

B 1 - 2

Basic type, with housing, size Check valve type B, version with housing 1 to 3, size 1 to 7

Additional versions:

■ Open-up pressure 3 bar

05-2

013-3

.5

HAWE Hydraulik SE | Streitfeldstr. 25 | 81673 München | Germany | Tel. +49 89 379 100-0 | [email protected] | 05-2013-3.5 | 2

Associated technical data sheets:

■ Check valves type B: D 1191

Similar products:

■ Check valves type RK, RB, RC,

RE, ER: D 7445, D 6969 R, D 7555 R, D 7325

Function

B

General parameters and dimensions

B 1 B 2 B 3

Basic type Size Qmax

[lpm]

pmax

[bar]

Ports (BSPP) Dimensions m

[kg]

G G1 L [mm] SW = a/f

-1 15 G 1/4 G 1/4 A 50 ... 60 SW 19 0.11

-2 20 G 3/8 G 3/8 A 58 ... 67 SW 24 0.16

-3 30 G 1/2 G 1/2 A 60 ... 66 SW 27 0.19

-4 45 G 3/4 G 3/4 A 70 ... 78 SW 36 0.36

-5 75 G 1 G 1 A 94 ... 114 SW 41 0.65

-6 120 G 1 1/4 G 1 1/4 A 110 ... 130 SW 55 1.3

B 1

B 2

B 3

-7 160

500

G 1 1/2 G 1 1/2 A 115 ... 136 SW 60 1.5

http://www.hawe.de/fileadmin/content/typeman/catalog/Pdf/1/1/D1191-en.pdf


http://www.hawe.de/fileadmin/content/typeman/catalog/Pdf/6/9/D6969R-en.pdf

http://www.hawe.de/fileadmin/content/typeman/catalog/Pdf/7/5/D7555R-en.pdf


hydraulically piloted check valves type hrp · 2016. 4. 7. · b 5585 037/1 b 5585 034/1 # (mm) 0.4...

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