pressure relief valve, - cma/flodyne/hydradyne pdfs/brh std valves/pressure/rexro… · 4/12 bosch...

Electric Drivesand Controls Hydraulics

Linear Motion andAssembly Technologies Pneumatics Service

Nominal sizes 10 and 25Series 1X; 4XMaximum operating pressure 350 bar (5000 PSI)Max. flow 400 l/min (105 GPM)

1/12RA 25818/08.03

Replaces: 08.99Pressure relief valve,

pilot operated

Model DB(W)...W65

Table of contents

Contents Page

Features 1

Ordering details 2

Design tested pressure relief valves 3

Symbols 4

Functional description, cross-section 4

Technical data 5, 6

General guidelines 6

Plug-in connector 6

Characteristic curves 7

Unit dimensions 8 to 11

Installation cavities 11

Standard types 12

Features

– Mounts on standard ISO 4401-06, or 08, NFPA/ANSI R 06

or R 08 interface

– For subplates see catalog sheet RE 45 065 (se pa ra te order)

– For threaded connections

– As a cartridge valve

– Four adjustment elements:

• Rotary knob

• Sleeve with hexagon and protective cap

• Lockable rotary knob with scale

• Rotary knob with scale

– Five pressure stages

– Solenoid operated unloading via a built-on directional valve

(only with threaded connections)

– For further information regarding the pilot valve see:

High performance directional valve to RE 23 178

Model

DB 10 -1-4X/..W65

Model

DBW 20 AG2-4X/... 6E...W65

Model

DB 20 K1-4X/...XY

Note:

Design tested pressure relief valves to pressure component

directive 97/23/EG (abbreviated to DGRL in any further text)

type DB 20 K../..E, series 1X, for ordering details see page 3.

Cou

rtes

y of

CM

A/F

lody

ne/H

ydra

dyne

▪ M

otio

n Con

trol

▪ H

ydra

ulic

▪ P

neum

atic

▪ E

lect

rica

l ▪ M

echa

nica

l ▪ (

800)

426

-548

0 ▪

ww

w.c

maf

h.co

m

2/12 Bosch Rexroth Corp. | Industrial Hydraulics DB(W)...W65 | RE 25818/08.03

No BSP

Code = Thread

Port

12 = SAE threaded ext. connections

Design tested:

No code= Without

E = Safety valve with design testing

to DGRL 97/23/EG

W65 = Vertical cartridge (ordering details are not required for

cartridge valve “K”)

No code = NBR seals

V = FKM seals

(other seals on request)

Attention!

The compatibility of the seals and pressure fl uid has to be taken into account!

Electrical connection 2)

K4 6) = Without plug-in connector Individual connection with component plug DIN EN 175 301-803

No code 2) = Without hand override

N 2) = With hand override

N9 2) = With protected hand override

G24 2) = 24 V DC

W230 2) = 230 V AC 50/60 Hz

No code = Without directional valve

6E 2) = With directional valve NS 6

No code = Lowest circulation pressure

U 4) = See characteristic curves on page 7

Pressure relief valve = DB

Without directional valve = No code

With built-on directional valve = W 1)

Normally closed = A 2)

Normally open = B 2)

For subplate mounting = –

For threaded connections = G

As a cartridge valve (cartridge) = K

Adjustment element

Rotary knob = 1

Sleeve with hexagon and protective cap = 2

Lockable rotary knob with scale = 3 3)

Rotary knob with scale = 7

Series 10 to 19 (only version “K”) = 1X

(10 to 19: unchanged installation and connection dimensions)

Series 40 to 49 = 4X

(40 to 49: unchanged installation and connection dimensions)

Settable pressure up to 50 bar (725 PSI) = 50




Settable pressure up to 350 bar (5100 PSI) (only version DB) = 350

Pilot oil supply and pilot oil drain

Internal pilot oil supply and pilot oil drain = – 5)

External pilot oil supply, internal pilot oil drain Also see = X

Internal pilot oil supply, external pilot oil drain symbols = Y

External pilot oil supply and pilot oil drain on page 4 = XY

DB –

A B

P T

a b

A B

P T

a b

*

Ordering details

1) Only for valve with threaded connections

2) Only version DBW..G..

3) H-key to Material No. R900008158

is included within the scope of supply

4) Version “U” is not suitable for a

cross-relief function!

5) Hyphen „–“ only required for DBW..G ..

without stating details regarding X, Y, XY, and U.

NSOrdering details

Subplatemounting

“–“

Threadedconnection

“G“

Cartridgevalve“K“

10 = 10 = 10 (G 1/2)

25 = 15 (G 3/4)

= 20 = 20 (G 1) = 20

}

6) Plug-in connectors must be ordered separately

(see page 6).

Attention!

When ordering spare cartridges for subplate mounting or

threaded connection housings NS 10 and 25 always

order type DB 20 K.-1X/..XY!

Design tested safety valves are only available for

type DB 20 K.-1X/..YE!

Further detailsin clear text

Cou

rtes

y of

CM

A/F

lody

ne/H

ydra

dyne

▪ M

otio

n Con

trol

▪ H

ydra

ulic

▪ P

neum

atic

▪ E

lect

rica

l ▪ M

echa

nica

l ▪ (

800)

426

-548

0 ▪

ww

w.c

maf

h.co

m

RE 25818/08.03 | DB(W)...W65 Industrial Hydraulics | Bosch Rexroth Corp. 3/12

NS Designation Component identifi cation

Max.

permissible

fl ow qVmax

in L/min (GPM)

Set response

over pressure p

in bar (PSI)

25

1 2 3

DB 20 K –1X/ Y E TÜV.SV. –1001.14,4.F.G.p

70 (18.4)

100 (26.4)

150 (39.6)

200 (52.8)

300 (79)

30 to 60 (435 to 870)

61 to 110 (884 to 1595)

111 to 210 (1609 to 3045)

211 to 315 (3060 to 4568)

316 to 350 (4583 to 5076)

• Before ordering a design tested pressure relief valve, checks

have to be carried out to ensure that at the required response

pressure p the maximum permissible fl ow qVmax (= numerical

value in the place of the “G“ within the component

identifi cation) of the safety valve is greater than the maximum

possible fl ow from the system. The appropriate regulations

must be taken into account!

• In accordance to DGRL 97/23/EG the system pressure

must not increase, due to the fl ow, by more than 10% of the

set response pressure (see component identifi cation).

– The maximum permissible fl ow stated within the

component identifi cation must not be exceeded.

– The return lines from safety valves must vent in a safe

manner. Fluid must not be able to gather in a venting system

(see the AD2000 -A2 information sheet).

Application notes must be taken into account!

• The response value stated within the component

identifi cation is set in the manufacturing plant with a fl ow of

2 L/min (0.52 GPM).

• The maximum permissible fl ow stated within the component

identifi cation is valid for:

– Pilot oil return “external” (= Y in the order code)

without back pressure in the pilot oil return line Y, the

permissible back pressure in the return line (port T) < 10

bar ( < 145 PSI)

• The removal of the seal from a safety valve invalidates

the DGRL approval

• Cavities (see page 11): Drilling “XY“ without port X

• The requirements of the pressure component directive

and the AD2000-A2 information sheet must be taken into

account!

Ordering details for design tested pressure relief valves type DB..K../..E, series 1X

Design tested to directive 97/23/EG (pressure component directive)

Safety guidelines for design tested safety valves type DB..K../..E, series 1X to the pressure

component directive DGRL 97/23/EG

1

Adjustment element hand wheel = 1

(sealed pressure adjuster, unloading or

adjustments in the lower settable range is possible!)

Adjustment element with sealed protective cap = 2

(no adjustment or unloading is possible)

2

The pressure details contained within the type

code are to be entered by the customer e.g. = 150

Pressure adjustments ≥ 30 bar (435 PSI) and

in 5 bar ( 72 PSI) steps are possible.

3

NBR seals = No code

FKM seals = V

Details are completed by the factory

Cou

rtes

y of

CM

A/F

lody

ne/H

ydra

dyne

▪ M

otio

n Con

trol

▪ H

ydra

ulic

▪ P

neum

atic

▪ E

lect

rica

l ▪ M

echa

nica

l ▪ (

800)

426

-548

0 ▪

ww

w.c

maf

h.co

m


Y

X P T

9

5

12

3

13 4

10

11

1

6

8

7

2

P

T X

P

T Y

P

T YX

P

T

A B

P T

a b

A B

P T

a b

P

T

A B

P T

a b

A B

P T

a b

X

P

T

A B

P T

a b

A B

P T

a b

Y

P

T

A B

P T

a b

A B

P T

a b

X Y

P

T

Functional description, cross-section

Symbols

Types DB and DBW valves are pilot operated pressure relief

valves of cartridge design. They are used for limiting (DB)

or limiting and solenoid operated unloading (DBW only with

threaded connections) of an operating pressure.

The valves basically consists of the housing (1) and a pressure

control valve cartridge (2).

The pressure present in port P acts on the spool (3). At the

same time pressure is applied to poppet (6) via orifi ce drillings

(4 and 5). When the pressure port P exceeds the force set on

the spring (7), the poppet (6) opens against the spring (7).

Pressure fl uid can now fl ow from port P via the orifi ce drillings

(4 und 5) into the spring chamber (8). From here the fl uid is led

internally, with type DB..-4X/.. , via control passages (9 and 10)

or externally, with type DB..-4X/..Y.. , via control passages (9

and 11) to the tank.

Due to the balanced condition at the poppet (3) pressure fl uid

fl ows from port P to port T, while maintaining the set operating

pressure.

A pressure gauge connection (12) allows the operating

pressure to be monitored.

The pressure relief valve can be unloaded or switched over to

another pressure value (second pressure stage) via port “X”

(13).

Pressure relief valve type DBW (only threaded connections)

In principle, the function of this valve corresponds to that of the

valve type DB.

Unloading of the main poppet is achieved by controlling the

built-on directional valve.

Type DB 20-1-4X/...W65

Type DB…XY…Type DB…X… Type DB…–… Type DB…Y…

Type DBW…XY…Type DBW…X…Type DBW…–… Type DBW…Y…

Normally closed

Normally open

Normally closed

Normally open

Normally closed

Normally open

Normally closed

Normally open

Cou

rtes

y of

CM

A/F

lody

ne/H

ydra

dyne

▪ M

otio

n Con

trol

▪ H

ydra

ulic

▪ P

neum

atic

▪ E

lect

rica

l ▪ M

echa

nica

l ▪ (

800)

426

-548

0 ▪

ww

w.c

maf

h.co

m


General

Installation Optional

Ambient temperature range Type DB.. °C (°F) –30 to +80 (–22 to 176) (NBR seals)

–15 to +80 (5 to 176)(FKM seals)

Type DBW..G.. °C (°F) –30 to +50 (–22 to 122) (NBR seals)

–15 to +50 (5 to 122) (FKM seals)

The minimum housing material strength Housing materials are to be so selected that adequate safety is

ensured for all conceivable operating pressures

(e.g. with reference to the compressive strength, thread

strength and tightening torques).

Weight NS 10 25

Subplate mounting kg (lbs) 1.6 (3.5) 2.3 (5.06)

Threaded connections Type DB.. kg (lbs) 2.95 (6.5) 2.95 (6.5)

Type DBW.. kg (lbs) 4.25 (9.4) 4.25 (9.3)

Cartridge valve (cartridge) kg (lbs) – 0.35 (0.8)

Directional valve technical data See catalogue sheet RE 23 178

Hydraulic (measured with HLP 46, ϑoil = 40 °C ± 5 °C)

Max. operating pressure, Ports P, X bar (PSI) 350 (5075)

Port T bar (PSI) 315 (4570)

Max. back pressure: Port Y Type DB.. bar (PSI) 250 (3635)

Port Y (DBW..G../..Y) or port T (DBW..G../..) bar (PSI) 210 (3000) for a DC solenoid

160 (2320) for an AC solenoid

Settable pressure Min. bar (PSI) Dependent on qv, see characteristic curves on page 5

Max. bar (PSI) Up to 50, Up to 100, Up to 200, Up to 315; (Up to 350 only version DB)

(725; 1150; 2900; 4570; (DB - 5075))

Maximum fl ow NS 10 25

Subplate mounting L/min (GPM) 200 (52.8) 400 (105.6)

Threaded connections L/min (GPM) 150 (39.6) 200 (52.8) (G 3/4);

300 (79) (G 1)

Pressure fl uid Mineral oil (HL, HLP) to DIN 51 524 1);

Fast bio-degradable pressure fl uids to

VDMA 24 568 (also see RE 90 221); HETG (rape seed oil) 1);

HEPG (polyglycole) 2); HEES (synthetic ester) 2);

other seals on request

Pressure fl uid temperature range °C (°F) –30 to +80 (–22 to 176) (NBR seals)

–15 to +80 (5 to 176) (FKM seals)

Viscosity range mm2/s (SUS) 10 to 800 (46 to 3708)

ISO code cleanliness class Maximum permissible degree of contamination of the pressure

fl uid is to ISO 4406 class 20/18/15 3)

1) Suitable for NBR and FKM seals

2) Only suitable for FKM seals

3) The cleanliness class stated for the components must be adhered to in hydraulic systems. Effective fi ltration prevents faults

from occurring and at the same time increases the component service life.

For the selection of fi lters see catalogue sheets RE 50 070, RE 50 076 and RE 50 081.

Technical data (for applications outside these parameters, please consult us!)

Cou

rtes

y of

CM

A/F

lody

ne/H

ydra

dyne

▪ M

otio

n Con

trol

▪ H

ydra

ulic

▪ P

neum

atic

▪ E

lect

rica

l ▪ M

echa

nica

l ▪ (

800)

426

-548

0 ▪

ww

w.c

maf

h.co

m


a Grey R900074683 – – –

a/b Black – R900057292 R900313933 R900310995

With indicator light and

Z-diode protective circuitry

24 VWith rectifi er

12 … 240 V

With indicator light

12 … 240 V

Ordering details: plug-in connectors to DIN EN 175 301-803 and ISO 4400 for component plug "K4"

Valve

side Color

Material No.

For further

plug-in connectors

see RE 08 006

Without circuitry

Hydraulic

Maximum back pressure Port Y bar (PSI) 0 (0)

Port T bar (PSI) 10 (145)

Maximum fl ow See tables on page 3

Pressure fl uid Mineral oil (HL, HLP) to DIN 51 524 and DIN 51 525

Pressure fl uid temperature range °C (°F) –20 to +60 (–4 to 140) (for NBR seals)

–15 to +60 (5 to 140) (for FKM seals)

Viscosity range mm2/s (SUS) 12 to 230

Deviating technical data for design tested pressure relief valves 1)

1) For applications outside these parameters, please consult us!

General guidelines

• The unloading function (directional valve function with DBW)

must not be used for safety functions !

• With type DBW..B..4X/... the lowest settable pressure is set

(circulation pressure) if the current fails or if there is a cable

break.

With type DBW..A..4X/... the pressure relief function is

activated if the current falls or if there is a cable break.

• Any hydraulic back pressure in port T with an internal pilot oil

drain (type DB/DBW../.. or port Y with an external pilot oil

drain (type DB/DBW../..Y.) are added 1:1 to the response

pressure set at the pilot control of the valve.

Example: The valve pressure setting resulting from the spring

loading (Pos. 7 on page 4) in the pilot control valve/

adjustment unit pspring = 200 bar (2900 PSI) Hydraulic

back pressure in port T with internal pilot oil drain phydraulic

= 50 bar (725 PSI) => Response pressure = pspring +

phydraulic = 250 bar (3626 PSI)

Cou

rtes

y of

CM

A/F

lody

ne/H

ydra

dyne

▪ M

otio

n Con

trol

▪ H

ydra

ulic

▪ P

neum

atic

▪ E

lect

rica

l ▪ M

echa

nica

l ▪ (

800)

426

-548

0 ▪

ww

w.c

maf

h.co

m


0 50 100 150 200 250 300

1 2

5(72)

10(145)

15(217)

(13.2) (26.4) (39.6) (52.8) (66) (79)

0 50 100 150 200 250 300

1 2

(13.2) (26.4) (39.6) (52.8) (66) (79)

5(72)

10(145)

15(217)

0 50 100 150 200 4250 300 350

1 3

( ) ( ) ( ) ( ) ( ) ( ) ( ) (

5(72)

10(145)

15(217)

0 50 100 150 200 400

5(72)

10(145)

15(217)

250 300 350

1 3

(13.2) (26.4) (39.6) (52.8) (66) (79) (92.4) (105.6)

0 50 100 150 200 400

50(725)

100(1450)

150(2175)

200(2900)

250(3626)

300(4351)

350(5076)

400(5801)

250 300 350

1 2

(13.2) (26.4) (39.6) (52.8) (66) (79) (92.4) (105.6)

Characteristic curves – measured with HLP 46, ϑoil = 40 °C ± 5 °C (104 °F ±41 °F)

Input pressure in relation to the fl ow

Flow in L/min (GPM) →

Inp

ut

pre

ssure

in b

ar

(PS

I) →

These characteristic curves were

measured with external pilot oil

drain at zero pressure. With an

internal pilot oil drain, the input

pressure increases by the output

pressure present in port T.

1 NS 10

2 NS 25

Minimum settable pressure and bypass pressure in relation to the fl ow 1)

Subplate mounting Threaded connections and cartridge valve

Standard version Standard version

Version “U”Version “U”

Min

. sett

ab

le p

ressure

,

byp

ass p

ressure

in b

ar

(PS

I) →

1 NS 10

2 NS 15 / NS 20

3 NS 20

1) The characteristic curves are valid for an output pressure = zero over the entire fl ow range!


Min

. sett

ab

le p

ressure

,

byp

ass p

ressure

in b

ar

(PS

I) →


Min

. sett

ab

le p

ressure

,

byp

ass p

ressure

in b

ar

(PS

I) →

Min

. sett

ab

le p

ressure

,

byp

ass p

ressure

in b

ar

(PS

I) →

Flow in L/min (GPM) →Flow in L/min (GPM) →

Cou

rtes

y of

CM

A/F

lody

ne/H

ydra

dyne

▪ M

otio

n Con

trol

▪ H

ydra

ulic

▪ P

neum

atic

▪ E

lect

rica

l ▪ M

echa

nica

l ▪ (

800)

426

-548

0 ▪

ww

w.c

maf

h.co

m


41

(1

.61

4)

12

1 (

4.7

6)

42.5 (1.673)37.5 (1.476)

125 (0.197) 12

12

22.1 (0.87)

47.5 (1.87)

53.8 (2.118)

53

.8 (

2.1

18

)

78

(3

.07

)

78 (3.07)5 (0.2)5

(0

.2)

26

(1

.02

4) 73

(2

.87

4)

48

(1

.89

)

Ø6 (0.236)

Ø32 (1.26)

18

(0

.7)

10

0 (

3.9

4)

76

(2

.99

)

40

(1

.57

)

4 x Ø14 (0.551)

X P T

X Y

3

8 29 0 1

Ø30 (1.18)

Ø35 (1.378)

8

10

14

2; 16

13

12

3

1

15

7

9

4

12

11

6

5

5 (0.197)

(0.47) (0.47)

(0.47)

G 1

/4

(SA

E-4

; 7

/1

6-2

0)

G 1

/4

(SA

E-4

; 7

/1

6-2

0)

0.0004/4.0 in

0.01/100 mm

(Rmax 4)

Required surface fi nish of

the mating piece

1 Name plate

2 Port X for remote control

(optional)

3 Port Y for external pilot oil drian

4 Adjustment element “1”




8 Locknut 22A/F

9 Hexagon 10A/F

Subplates to catalogue sheet

RE 45 064 and valve fi xing screws must be

ordered separately.

Subplates: G 545/01, G 3/8 1)

G545/12 (SAE-6; 9/16-18)

G 546/01, G 1/2 1)

G546/12 (SAE-8; 3/4-16)

G 565/01, G 3/4 1)

G565/12 (SAE-12; 11/16-12)

Valve fi xing screws

M12 x 50 DIN 912-10.9,

(1/2-13 UNC x 2”)

MA = 130 Nm (95 lb-ft)

1) It is not permissible to use the stated

subplates with design tested valves!

10 Hexagon 30A/F

Tightening torque

MA= 50 Nm (36lb-ft)

11 Space required to remove the key

12 Locating pin

13 Valve fi xing holes

14 Pressure gauge connection

15 Identical seal rings for

ports P and T

16 Seal ring for port X

Unit dimensions: subplate mounting – dimensions in millimeters (inches) NS 10

Cou

rtes

y of

CM

A/F

lody

ne/H

ydra

dyne

▪ M

otio

n Con

trol

▪ H

ydra

ulic

▪ P

neum

atic

▪ E

lect

rica

l ▪ M

echa

nica

l ▪ (

800)

426

-548

0 ▪

ww

w.c

maf

h.co

m


69 (2.71)

5 (

0.1

97

)

69

.5 (

2.7

36

) 4

8 (

1.8

9)

3

8 29 0 1

Ø32 (1.26)

18

(0

.7)

10

0 (

3.9

4)

76

(2

.99

)

23.8 (0.937) 11.1 (0.437)

55.6 (2.189)

4 x Ø18

26

(1.0

24)

Ø6 (0.236)

37

(1

.45

)

11

7.5

(4

.62

)

12 (0.47) 5 (0.197)

X Y

X P T

66.7 (2.626) 33.5 (1.319)

97 (3.82)

18.5 (0.73)

33.4

(1.315)

70

(2

.75

6)

10

0 (

3.9

4)

Ø30 (1.18)

40

(1

.57

) Ø35 (1.378)

3

8

10

14

2; 16

13

12

1

15

7

9

4

12

11

6

5

5 (0.197) 12

(0.47)

(Ø0.709)

G 1

/4

(SA

E-4

; 7

/1

6-2

0)

G 1

/4

(SA

E-4

; 7

/1

6-2

0)

0.0004/4.0 in

0.01/100 mm

(Rmax 4)

Required surface fi nish of the mating piece

Unit dimensions: subplate mounting – dimensions in mm (inches) NS 25

1 Name plate

2 Port X for remote control (optional)

3 Port Y for external pilot oil drain





8 Locknut 22A/F

9 Hexagon 10A/F

Subplates to catalogue sheet

RE 45 064 and valve fi xing screws must

be ordered separately.

Subplates G 408/01, G 3/4 1)

G408/12 (SAE-12; 11/16-12)

G 409/01, G 1 1)

G409/12 (SAE-16; 15/16-20)

Valve fi xing screws

M16 x 50 DIN 912-10.9,

(5/8-11 UNC x 2”)

MA = 310 Nm (228 lb-ft)

1) It is not permissible to use the stated

subplates with design tested valves!

10 Hexagon 30A/F Tightening torque MA= 50 Nm (36 lb-ft)


12 Locating pin

13 Valve fi xing screws

14 Pressure gauge connection

15 Identical seal rings for ports P and T

16 Seal ring for port X

Cou

rtes

y of

CM

A/F

lody

ne/H

ydra

dyne

▪ M

otio

n Con

trol

▪ H

ydra

ulic

▪ P

neum

atic

▪ E

lect

rica

l ▪ M

echa

nica

l ▪ (

800)

426

-548

0 ▪

ww

w.c

maf

h.co

m


3

82

90

1

Ø3

2 (

1.2

6)

18 (0.7)

100 (3.94)

76 (2.99)

33

(1.2

29

)4

2(1

.65

4)

75

(2

.95

3)

=

66

(2

.59

8)

66 (2.598)

35 (1.378)

169 (6.65)

48

201.8

2.5 (0.098)

Ø9 (0.35)

48

(1

.89

)

44.5 (1.75) 45 (1.77)

121 (4.77)

ØD2; 0.3

D1

ØD2; 0.3

D1

Ø25 (0.984)

T

P

P X

ØD2; 0.3

D1

Ø25 (0.984)

Y

41 45

90 (3.54)

35 (1.378) 31 (1.22)

= Ø3

0 (

1.1

8)

40 (1.57)

Ø3

5 (

1.3

8)

13

19

1

24

4

8

10

3

17

2

7

11

65

9

20 25

85

.5 (

3.3

6)

15

(0

.6)

()

91

.5 (

98

)Pg 11Pg 11

18

1

3.5 (0.137)

A

14 (0.55) 22

21

23

25

P

TB 26

28

29

28

29

27

50.5

(1.98)

(1.89)

(1.61) (1.77)

Unit dimensions: threaded connections – dimensions in millimeters (inches)

1 Name plate

2 Port X (G 1/4; 12) for remote

control

3 Port Y (G 1/4; 12 ) for external

pilot oil drain





8 Locknut 22A/F

9 Hexagon 10A/F

10 Hexagon 30A/F

tightening torque

MA = 50 Nm (36lb-ft)


13 Valve fi xing holes

17 Set scres not required for version

with internal pilot oil drain

18 Directional valve NS 6

(for dimensions see catalogue

sheet RE 23 178)

19 Plug-in connector without

circuitry 1)

20 Plug-in connector with circuitry 1)

21 Dim. for solenoid without

hand override “N”

22 Dim. for solenoid with

hand override “N”

23 Dim. for hand override “N9“

– The hand override can only

be operated up to a tank

pressure of approx. 50 bar.

(725 PSI)

Avoid damage to the hand

override pin bore!

24 Housing for version with

built-on directional valve

(DBW..G..)

25 Space required to remove the

plug-in connector

26 Valve mounting surface port A

is not drilled

27 Space required to remove

the coil

28 Dim. for valve with a DC voltage

29 Dim. ( ) for a valve with

an AC voltage

Valve type D1 Ø D2

DB.10.G G 1/2(SAE-8; 3/4-16)

34

(1.338)

DB.15.G G 3/4(SAE-12; 1-1/16-12)

42

(1.653)

DB.20.G G 1(SAE-16; 1-5/16-12)

47

(1.850)

Cou

rtes

y of

CM

A/F

lody

ne/H

ydra

dyne

▪ M

otio

n Con

trol

▪ H

ydra

ulic

▪ P

neum

atic

▪ E

lect

rica

l ▪ M

echa

nica

l ▪ (

800)

426

-548

0 ▪

ww

w.c

maf

h.co

m


3

8 29 0 1

18

(0

.7)

10

0 (

3.9

4)

76

(2

.99

)

40

(1

.57

)

48

(1

.89

)

11

2.5

(4

.43

)Ø32 (1.26)

Y

X

Ø30 (1.18)

Ø35 (1.38)

4

5

9

8

10

26323127

28

29

30

7

11

6

Ø29H8

Y

M28 x 1.5

20°

A Ø21H8

2.5

(0

.09

8)

8 (

0.3

15

)19 (

0.7

48)

64

(2

.52

)

70

(2

.75

6)

Ø3

0 1)

37

(1

.45

7)

Ø15.5

P

T

B

Y

2

Ø29H8

Z

Y

Ø3

0 (

1.1

81

)1

)

M28 x 1.5

Ø26.5(1.043)

20°

Y

Z

A0.03(0.0012)

Z

20°A

Y

Ø22.5 (0.88 )H8

Ø30 1)

Y

X

Ø4

(0

.15

7)

Ø2.5

(0.0

98)

18 (

0.7

09)

31

.5 (

1.2

4)

42

(1

.65

3)

64

.5+

1.5

66

(2

.59

8)

T

PP

Ø3

0 1

)

B

8 (

0.3

15

)

48

(1

.89

)10° +0

.2+0

.2

33

34

35

36

33

34

33

Ø24+0.1

20°

Z

Z

Z

20°

B0.03 A

(Ø1.043)

37

(2.5

39

)

(Ø1

.18

1)

0.03(0.0012) B

H8(1.142 )

(0.945 )+0.0039

(Ø1.181)

Ø21H8

(0.828 )H8

H8

Ø1

2 (

0.4

72

)

Ø30 (1.188)

0.03(0.0012)

2.5

(0.0

98)

19

(0

.74

8)

28.5

(1

.122 )

+0

.00

8

35 (1

.378 )

+0

.2

+0

.00

8

56 (2

.205 )

+0

.00

8

+0

.2

64.5

(2

.539 )

+0

.2+

0.0

08

54 (2

.126 )

+0

.2+

0.0

08

56 (2

.205 )

+0

.2+

0.0

08

Ø1.142H8

Ø0.828H8

(0

.18

1)

A

(0.079)

(Ø0.61)

Ø26.5

=Y

=ZR

z 16

Rz 8

Unit dimensions: cartridge valve types DB 20 K…XY and Y – dimensions in mm (inches)



6 Adjustment element ”3"


8 Locknut 22A/F

9 Hexagon 10A/F

10 Hexagon 30A/F

tightening torque

MA = 50 Nm (36 lb-ft)


26 Seal ring

27 Seal ring 2)

28 Back-up ring 2)

29 Seal ring

30 2 back-up rings

31 Drilling for port “X” not provided for

type DB 20 K..-1X/..Y..

32 Drilling for port “Y” provided for

type DB 20 K.-1X/..XY and

type DB 20 K.-1X/..Y

1) Maximum dimensions

2) Deleted with type DB 20 K.-1X/..Y..

Cartridge valve mounting cavity

Version “Y”(internal pilot oil supply and pilot oil drain)

Cartridge valve mounting cavity

Version “XY“ and design tested valves DB 20 K../..Y..E (without X port)

33 Drilling X, Y and T optional about the circumference with

type DB 20 K.-1X/..XY..

Drilling B optional about the circumference with type DB

20 K.-1X/..Y..

34 Depth of fi t

35 Drilling Ø 2.5 (0.098 in) only when required

36 Drilling P, optional

37 Port “X“ for design tested valves

type DB 20 K../..Y..E must not

be drilled, is without function!

Cou

rtes

y of

CM

A/F

lody

ne/H

ydra

dyne

▪ M

otio

n Con

trol

▪ H

ydra

ulic

▪ P

neum

atic

▪ E

lect

rica

l ▪ M

echa

nica

l ▪ (

800)

426

-548

0 ▪

ww

w.c

maf

h.co

m


Standard types

Type Material No.

DB 20 K2-1X/50XY R900470296

DB 20 K2-1X/100XY R900470297

DB 20 K2-1X/200XY R900470298

DB 20 K2-1X/315XY R900493939

DB 10 G2-4X/50W65 R900403149

DB 10 G2-4X/100W65 R900405532

DB 10 G2-4X/200W65 R900404262

DB 10 G2-4X/315W65 R900441994

DB 10-2-4X/50W65 R900517879

DB 10-2-4X/100W65 R900593404

DB 10-2-4X/200W65 R900368564

DB 10-2-4X/315W65 R900592765

DB 10-2-4X/350W65 R900597122

DB 20 G2-4X/50W65 R900479678

DB 20 G2-4X/100W65 R900407106

DB 20 G2-4X/200W65 R900401564

DB 20 G2-4X/315W65 R900423704

DB 20 G2-4X/350W65 R900402410

DB 20-2-4X/50W65 R900503495

DB 20-2-4X/200W65 R900503250

DB 20-2-4X/315W65 R900592968

DB 20-2-4X/315XW65 R900510838

DB 20-2-4X/350W65 R900593586

Bosch Rexroth Corp.

Industrial Hydraulics

2315 City Line Road

Bethlehem, PA 18017-2131

USA

Telephone (610) 684-8300

Facsimile (610) 694-8467

www.boschrexroth-us.com

© This document, as well as the data, specifi cations and other

information set forth in it, are the exclusive property of Bosch Rexroth

Corporation. Without their consent it may not be reproduced or given to

third parties.

The data specifi ed above only serve to describe the product. No

statements concerning a certain condition or suitability for a certain

application can be derived from our information. The information given

does not release the user from the obligation of own judgment and

verifi cation. It must be remembered that our products are subject to a

natural process of wear and aging.

Cou

rtes

y of

CM

A/F

lody

ne/H

ydra

dyne

▪ M

otio

n Con

trol

▪ H

ydra

ulic

▪ P

neum

atic

▪ E

lect

rica

l ▪ M

echa

nica

l ▪ (

800)

426

-548

0 ▪

ww

w.c

maf

h.co

m

pressure relief valve, - cma/flodyne/hydradyne pdfs/brh std valves/pressure/rexro… · 4/12 bosch...

Documents