a03c

Pressure/Temperature Ratings and Designs **)

Type PN∆PMX[bar]

Werkstoffe Druck-/Temperaturgrenzen

EN ASTM 1) PMA / TMA PMA / TMA

UNA 14 25 13 EN-JS 1049 – 25 bar / 20 °C 15 bar / 350 °C

UNA 23 16 13 EN-JL 1040 A126 Cl. B 16 bar / 120 °C 9.6 bar / 300 °C

UNA 16 40 221.0460;

1.0619

A105;

A216 WCB40 bar / 20 °C 23.1 bar / 400 °C

UNA 25 40 32 EN-JS 1049 – 32 bar / 250 °C 25 bar / 350 °C

UNA 26 40 321.0460;

1.0619

A105;

A216 WCB32 bar / 250 °C3) 21 bar / 400 °C

UNA 27 h 63 45 1.5419 A217 WC1 56 bar / 250 °C 40.6 bar / 450 °C

UNA 38 100 80 1.54154) A182-F1 100 bar / 150 °C 44 bar / 500 °C

UNA 39 160 140 1.7335 A182 F12 160 bar / 300 °C 35 bar / 550 °C

UNA-Special

Typ 6216 16 EN-JL 1040 A126 Cl. B 16 bar / 120 °C 9.6 bar / 300 °C

UNA-Special 25 22 1.0619 A216 WCB 22.6 bar / 120 °C 14.4 bar / 400 °C

UNA 25 22 1.0619 A216 WCB 22.6 bar / 120 °C 14.4 bar / 400 °C

UNA-Special 63 45 1.5419 A217 WC1 56 bar / 250 °C 40.6 bar / 450 °C

UNA 16 A40 22

1.44042)

1.4308 2)

A182 F 316L2)

A351 CF8 2)

40 bar /

–196 °C / 20 °C25.8 bar / 300 °C

UNA 26 h40 32 1.4408 A351 CF8 M 40 bar / 20 °C 25.8 bar / 300 °C

1) ASTM nearest equivalent grade is stated for guidance only. Physical and chemical properties comply with EN grade.

2) Body/cover material

3) UNA 26 DN 40, DN 50: 26 bar/250 °C

4) Body 1.5415, cover 1.7357

**) For more information see data sheet.

h: for horizontal lines

Ball-Float Traps UNA

PN 16 – PN 160

Features of the UNA series

• Unaffected by back pressure and condensate temperature

• No loss of live steam due to continuous water seal at the seat

• No banking-up of condensate even with extreme load and pressure fluctuations

• Particularly well suited for heat exchangers controlled from the steam side

• Unaffected by dirt

• Automatic thermostatic air-venting (Duplex design)

• Ideal for discharging cold condensates, distil-lates and condensates derived from chemical products (Simplex design)

• Repairable in-line

• Thanks to the rolling ball valve only reduced operating forces and small control units are required (compact, lightweight design for large flowrates)

• Internals made from corrosion-resistant stainless steels

UNA 23/25/26 h

DN 15 – 50

UNA 23/25/26 v

DN 40, 50 with MAX regulator

Application

Condensate discharge without banking-up,

even at varying operating conditions and back

pressure. Automatic air-venting (Duplex design).

Also for the discharge of cold condensates and

distillates, and for draining gas and compressed

air systems (Simplex design).

L

UNA 27 h

DN 25 – 50

L2

UNA 39

DN 15, 25, 50

L1

STAINLESS

STEEL

UNA 14/16 v

DN 15 – 25

L

STAINLESS

STEEL

UNA 23/25/26 v UNA 26

A1


PN 16 – PN 160

L1

L2

L1

L2

UNA-Special Typ 62, PN 16

UNA-Special, PN 25

UNA-Special, PN 63

UNA PN 25

Available End Connections and Overall Length

Optional Items for Ball-Float Traps

Item Type

Sightglass cover UNA 23

Float lifting lever with gasket UNA 23, 25, 26 (UNA 27 h and 38 on request)

Vent valve with gasket (for Duplex design) UNA 23, 25, 26, 27 h, 38

Simplex: Float control (without thermostatic bellows)Duplex: Flow control + automatic air-ventingSimplex-R: Float control + inner vent pipe

Type ConnectionLength L1/L2 in mm

DN 50 DN 65 DN 80 DN 100

2" 21/2" 3" 4"

UNA-Special Flanged EN PN 16 L1 – 470 490 700

Typ 62, PN 16 L2 – 395 420 595

UNA-Special Flanged EN PN 25 L1 445 470 – –

PN 25 L2 345 395 – –

UNA PN 25 Flanged EN PN 25 L1 – – 140 140

L2 – – 335 400

UNA-Special Flanged EN PN 63 L1 – 565 690 700

PN 63 L2 – 400 435 450

Type ConnectionOverall length (L) in mm

DN 15 DN 20 DN 25 DN 40 DN 50 1/2" 3/4" 1" 11/2" 2"

UNA 14h, 14v Flanged EN PN 25 150 150 160 – –

Screwed sockets 95 95 95 – –

UNA 16h, 16v, Flanged EN PN 40 150 150 160 – –

UNA 16Ah, 16Av Flanged ASME 150 RF 150 150 160 – –

Screwed sockets 95 95 95 – –

Socket-weld (SW) 95 95 95 – –

Butt-weld (BW) 200 200 200 – –

UNA 23h, 23v Flanged EN PN 16 150 150 160 230 230



UNA 26h Flanged EN PN 40 210 210 230 320 320

STAINLESS STEELUNA 26h Flanged ASME 150 + 300 RF 210 210 230 320 320

Screwed sockets 200 200 200 255 255

Socket-weld (SW) 200 200 200 230 230

Butt-weld (BW) 200 200 200 230 230

UNA 27h1) Flanged EN PN 63/PN 100 300 – 300 420 416

and Flanged ASME 600 RF 300 – 300 421 427

UNA 38 Socket-weld / SW via transition pieces 300 – 300 4202) 4202)

Butt-weld / BW via transition pieces 300 – 300 4202) 4202)

UNA 39 L1/L2 L1/L2 L1/L2

Flanged EN PN 160 215/285 – 230/300 – 245/315

Flanged ASME 900 RF 250/320 – 260/330 – 280/350

Butt-weld (BW) 170/240 – 170/240 – 170/240

1) not available as DN 15 2) UNA 38 socket-weld (SW) ends and butt-weld (BW) ends DN 40 + DN 50: 300 mm, SW and BW via transition pieces: 420 mm

STAINLESS

STEEL

UNA 38h

Available Designs

TypeEnd connection options

Orifice (O) for max. differential pressureControl unit

horizontal vertical angle pattern Simplex Duplex Simplex-R

UNA 14 x1) x1) O 4, 13 x x x

UNA 16, 16A x1) x1) O 4, 13, 22 x x x

UNA 23 x x O 2, 4, 8, 13, 4 max.*), 8 max.*), 13 max.*) x x x

UNA 25/26 x x O 2, 4, 8, 13, 22, 32, 4 max.*), 8 max.*), 13 max.*) x x x

UNA 27h x O 16, 28, 45 x x

UNA 38 x1) x1) O 50, (64), 80, 80 max. x x

UNA 39 x O 80, 110, 140, 140 max. x

UNA-Special Typ 62, PN 16 x O 22)3), 3.54), 5, 10, 16 x6) x2)7)

UNA-Special PN 25 x O 25), 3.54), 5, 10, 16, 22 x6) x7)

UNA PN 25 x O 2, 3.5, 5, 8, 12, 16, 22 x6)

UNA-Special PN 63 x O 16, 22, 32, 40, 45 x6)

1) A conversion of “h” to “v” or vice versa is possible 2) This design is not available for DN 100 mm 3) This design is not available for DN 80 mm 4) This design is not available for DN 65 mm

5) This design is not available for DN 50 mm 6) Simplex: Flow control + hand vent valve + float lifting lever 7) Duplex: Flow control + automatic air-venting

*) DN 40, DN 50

UNA 26h, 26vUNA 26h, 26v

UNA 25/26UNA 25/26 x x

UNA 27 h


PN 16 – PN 160

Capacity Charts

The charts show the maximum hot condensate capacities for the range of float-controlled orifices (O) and sizes available.

UNA 14, UNA 16 UNA 23, UNA 25, UNA 26

, AO

22

UNA 38, AO 50, 64, 80

UNA 23, 25, 26 max.

UNA 38, AO 80 max

UNA 23, UNA 25, UNA 26

A1


PN 16 – PN 63

Capacity Charts

The charts show the maximum hot condensate capacities for the range of orifices (O) and sizes available.

UNA PN 25, DN 80 and 100Available

orifices (O)

1 DN 80 O 22

2 DN 80 O 16

DN 100 O 22

3 DN 80 O 12

4 DN 100 O 16

5 DN 80 O 8

DN 100 O 12

6 DN 80 O 5

DN 100 O 8

7 DN 80 O 3.5

8 DN 100 O 5

9 DN 80 O 2

DN 100 O 3.5

10 DN 100 O 2

Available

orifices (O)

1 DN 65 O 16

2 DN 65 O 10

DN 80 O 16

3 DN 80 O 10

4 DN 100 O 16

5 DN 65 O 5

6 DN 80 O 5

7 DN 65 O 2

DN 80 O 3.5

DN 100 O 10

8 DN 100 O 5

9 DN 100 O 3.5

10 DN 100 O 2

UNA-Special Typ 62, PN 1610

UNA 39, DN 15, 25 and 50

Ball-Float Traps UNA and UNA-Special

PN 16 – PN 63

UNA-Special PN 63 (PN 40)

Available

orifices (O)

1 DN 65 O 45

2 DN 65 O 40

3 DN 80 O 45

4 DN 65 O 32

DN 80 O 40

5 DN 100 O 45

6 DN 65 O 22

DN 100 O 40

7 DN 80 O 32

8 DN 65 O 16

9 DN 100 O 32

10 DN 80 O 22

11 DN 80 O 16

DN 100 O 22

12 DN 100 O 16

UNA-Special PN 25, DN 50 and 65

Capacity Charts

The charts show the maximum hot condensate capacities for the range of orifices (O) and sizes available.

Available

orifices (O)

1 DN 50 O 22

2 DN 50 O 16

DN 65 O 22

3 DN 50 O 10

DN 65 O 16

4 DN 65 O 10

5 DN 50 O 5

6 DN 50 O 3.5

DN 65 O 5

7 DN 65 O 2

1

Steam Traps

UNA 23h/v, PN 16, DN 15, 20, 25, 40, 50

UNA 25h/v, PN 40, DN 15, 20, 25, 40, 50

UNA 26h/v, PN 40, DN 15, 20, 25, 40, 50

UNA 26h Stainless Steel, PN 40, DN 15, 20, 25, 40, 50

Issue Date: 4/09

Product Range A1GESTRA Steam Systems

UNA 23h/v

UNA 25h/v

UNA 26h/v

UNA 26h Stainless Steel

Description

UNA 2.. are ball float traps with rolling ball closing mechanisms (control unit SIMPLEX / DUPLEX) or with bellows-type closing mechanism (control units SIMPLEX-MAX/DUPLEX-MAX). The steam traps work independently of back pressure, thus ensuring universal application.

The steam trap UNA 2.. features a body with bolted cover and a regulating unit. The component parts can be exchanged after removing the cover but without having to take the equipment out of the pipe (easy in-line maintenance). Different types of regulating unit are available for the steam traps.

The regulating unit SIMPLEX is a level-dependent float-actuated control unit and particularly well suited for cold con-densate and superheated steam. The regulating unit DUPLEX is a float-actuated control unit for temperature-dependent and automatic deaeration of saturated steam systems.

The regulating unit SIMPLEX-MAX is a level-dependent float-actuated control unit for large condensate flowrates and particularly well suited for cold condensate and superheated steam. The regulating unit DUPLEX-MAX is a float-actuated control unit for large condensate flowrates and suitable for the temperature-dependent and automatic deaeration of saturated steam systems.

UNA 2...h for installation in horizontal linesUNA 2...v for installation in vertical lines

The steam trap UNA 23 h/v is also available with an integrated sightglass cover for level indication.

Function

The ball valve of the control unit is operated by the float as a function of the condensate level in the trap. The cross-sectional area (CSA) of the orifice dictates the max. flowrate when the valve is completely open. The max. admissible differential pressure of the control unit is a function of the CSA of the orifice and the density of the fluid to be discharged, and limited by the specified pressure / temperature ratings of the trap body. There are different closing units (orifices) available which can also be exchanged subsequently.

Float traps equipped with control units DUPLEX, DUPLEX-MAX enable automatic temperature-dependent deaeration of saturated steam systems during start-up and continuous operation.

Pressure / Temperature Ratings & End Connections

UNA 23h/v, Flange PN 16, EN 1092-2, DN 15-50

PMA (max. pressure) [bar]g 16.0 16.0 12.0 9.6

TMA (max. temperature) [°C] 20.0 120.0 200.0 300.0

Δ PMX (max. differential pressure) [bar] see table differential pressure

UNA 25h/v, Flange PN 40, EN 1092-2, DN 15-50




UNA 26h/v, all end connections, DN 15-25




UNA 26h/v, all end connections, DN 40, 50




UNA 26h stainless steel, all end connections, DN 15-50

PMA (max. pressure) [bar]g 40.0 35.0 29.3 25.8 28.0*

TMA (max. temperature) [°C] 20.0 100.0 200.0 300.0 300.0*


*) The indicated values are only applicable for flanges ASME Class 300.

UNA 23h, UNA 25h, UNA 26h

UNA 23v, UNA 25v, UNA 26v

UNA 23h with sightglass cover

UNA 23v with sightglass cover

UNA 26h/vUNA 26h/v

UNA 26h/v, PN 40, DN 15, 20, 25, 40, 50UNA 26h/v, PN 40, DN 15, 20, 25, 40, 50UNA 26h/v, PN 40, DN 15, 20, 25, 40, 50UNA 26h/v, PN 40, DN 15, 20, 25, 40, 50

UNA 23v, UNA 25v, UNA 26v

UNA 26h/v, all end connections, DN 15-25UNA 26h/v, all end connections, DN 15-25

UNA 26h/v, all end connections, DN 40, 50UNA 26h/v, all end connections, DN 40, 50

2

Materials

Type UNA 23h/v

Designation DIN / EN ASTM*

Body / cover EN-JL 1040 A 126 Cl. B

Screws, DN 15-25 1.7709

Nuts & bolts, DN 40, 50 5.6 / 5-2

Type UNA 25h/v

Designation DIN / EN ASTM*

Body / cover EN-JS 1049

Nuts & bolts 1.7709

Type UNA 26h/v

Designation DIN / EN ASTM equivalent*

Body UNA 26h, DN 15-25 1.0460 A 105

Body UNA 26h, DN 40, 50 1.0619 A 216-WCB

Body UNA 26v 1.0619 A 216-WCB

Body UNA 26h stainless steel 1.4408 A 351-CF8M

Cover 1.0619 A 216-WCB

Cover UNA 26h stainless steel 1.4408 A 351-CF8M

Nuts & bolts 1.7709

Nuts & bolts UNA 26h stainless steel A 2-70 A 193-B8 / A 194-8

Nuts & bolts UNA 26h stainless steel,

DN 40, 501.4980

Type Internals of rolling ball regulator (control unit SIMPLEX / DUPLEX)


Body gasket graphite / CrNi graphite / CrNi

Seat gasket graphite / CrNi graphite / CrNi

Seat (except UNA 26h stainless steel) 1.4305 AISI 303

Seat UNA 26h stainless steel 1.4571 AISI 316 Ti

Valve ball 1.4401 A 182 F316

Float 1.4571 AISI 316 Ti

Thermostat 1.4541 A 182 F321

Other internals 1.4301 A 182 F304

Type Internals of bellows thermostat (control unit SIMPLEX- / DUPLEX-MAX)


Seat (orifice) 1.4571 AISI 316 Ti

Main valve 1.4122

Valve needle 1.4122

Valve seat 1.4305 AISI 303

Bellows 1.4541 A 182 F321

Membrane austenitic steel / Hastelloy® austenitic steel / Hastelloy®

Other internals austenitic steel / Hastelloy® austenitic steel / Hastelloy®

*) Guide only, direct comparsion not possible.

Orifices

Orifices (O)(Seat design)

Max. admissible differentialpressure PMX UNA 23h/v UNA 25h/v UNA 26h/v UNA 26h stainless steel

[bar] [psi]

O 2 2 29.0

O 4 4 58.0

O 4 MAX (DN 40, 50) 4 58.0

O 8 8 116.0

O 8 MAX (DN 40, 50) 8 116.0

O 13 13 188.5

O 13 MAX (DN 40, 50) 13 188.5

O 22 22 319.1

O 22 MAX (DN 40, 50) 22 319.1

O 32 32 464.1

O 32 MAX (DN 40, 50) 32 464.1

Orifices – continued –

Orifices (O)DN 15-25 (½" – 1")

KVS value

[m3/h]

of bore

[mm]

O 2 1.50 8.0

O 4 0.90 6.0

O 8 0.58 4.8

O 13 0.44 4.1

O 22 0.38 3.5

O 32 0.31 3.0

Orifices (O)DN 40, 50 (1½", 2")

KVS value

[m3/h]

of bore

[mm]

O 2 6.0 15.0

O 4 4.1 12.5

O 4 MAX 16.6 27.5

O 8 3.2 10.0

O 8 MAX 10.6 19.4

O 13 2.1 8.5

O 13 MAX 7.7 15.3

O 22 1.5 7.0

O 32 1.1 6.5

The KV value is the measured flowrate of water (at 5 to 30 °C) in [m³/h] at a pressure drop of 1 bar and the associated opening degree of the closing unit (orifice).The KVS value is the KV value when the closing unit (orifice) is completely open.

For more information refer to the Capacity Chart on page 10.

Hastelloy® is a registered trademark of Haynes International Inc., Kokomo IN, USA

UNA 26h/vUNA 26h/v

Body UNA 26v

3

End dimensions of screwed sockets (extract)

DN EN ISO 228-1

[mm] 15 20 25 40 50

[inch] ½ ¾ 1 1½ 2

b 15 16.3 19.1 21.4 25.7

L 200 200 200 255 255

LX 150 150 160 255 255

[kg]

DN ASME B 1.20.1

[mm] 15 20 25 40 50

[inch] ½ ¾ 1 1½ 2

b 13.6 14 16.8 17.3 17.7

L 200 200 200 255 255

LX 150 150 160 255 255

[kg]

LX = length of installation for UNA 26h stainless steel. For weight specifications see table “Weights”.

Other designs, special dimensions and other materials of end connections available on request.

End dimensions of butt-weld ends (extract)

30°

L

d2d1

1.5

DN DIN 3239-1, DIN 2559-2

[mm] 15 20 25 40 50

[inch] ½ ¾ 1 1½ 2

d2 22 28 34 49 61

d1 17.3 22.3 28.5 43 54

for pipe 21.3 x 2.0 26.9 x 2.3 33.7 x 2.6 48.3 x 2.6 60.3 x 3.2

b

L 200 200 200 230 230

[kg]

For weight specifications see table “Weights”. Other designs, special dimensions and other materials ofend connections available on request.

End dimensions of socket-weld ends (extract)

DN DIN EN 12760, ASME B 16.11 Cl 3000

[mm] 15 20 25 40 50

[inch] ½ ¾ 1 1½ 2

D2 32.0 37.5 46.0 62.0 75.5

D1 22 27.5 34.3 49 61.5

for pipe

b 10 13 13 13 16

L 200 200 200 230 230

LX 140 140 150 230 230

[kg]

LX = length of installation for UNA 26h stainless steel. For weight specifications see table “Weights”.Other designs, special dimensions and other materials of end connections available on request.

End dimensions of flanges (extract)

DN EN 1092-1 (2001), PN 40

[mm] 15 20 25 40 50

[inch] ½ ¾ 1 1½ 2

D 95 105 115 150 165

b 16 18 18 18 20

k 65 75 85 110 125

g 45 58 68 88 102

l 14 14 14 18 18

n 4 4 4 4 4

L 150 150 160 230 230

LX 210 210 230 320 320

[kg]

DN ASME B16.5, Cl 150 ASME B16.5, Cl 300

[mm] 15 20 25 40 50 15 20 25 40 50

[inch] 1/2 3/4 1 1 1/2 2 1/2 3/4 1 1 1/2 2

D 88.9 98.4 107.9 127.0 152.4 95.2 117.5 123.8 155.6 165.1

b 11.1 12.7 14.3 17.5 19.0 14.3 15.9 17.5 20.6 22.2

k 60.3 69.8 79.4 98.4 120.6 66.7 82.5 88.9 114.3 127.0

g 34.9 42.9 50.8 73.0 92.1 34.9 42.9 50.8 73.0 92.1

l 15.9 15.9 15.9 15.9 19.0 15.9 19.0 19.0 22.2 19.0

n 4 4 4 4 4 4 4 4 4 8

L 210 210 230 320 320 210 210 230 320 320

LX 210 210 230 320 320 210 210 230 320 320

[kg]

Length of installation L to ISO = 6554. LX = length of installation for UNA 26h stainless steel.Other designs, special dimensions and other materials of end connections available on request.For weight specifications see table “Weights”.

NPT

G

EN 1092-1 (200

4

Dimensions Dimensions – continued –

UNA 23h, UNA 25h, UNA 26h, UNA 26h stainless steel

LX = length of installation for UNA 26h stainless steel.

30°

L

d2d1

1.5

Butt-weld end (UNA 26h)

Socket-weld end (UNA 26h)


Screwed socket (UNA 26h)


L/LX

H2

H1

L1

UNA 23h, UNA 25h, UNA 26h, UNA 26h stainless steel with

control unit DUPLEX

38

H

B S

S = space required for servicingDN 15 – 25 (½" – 1") ≈ 130DN 40, 50 (1½", 2") ≈ 200

UNA 23h with control unit DUPLEX and sightglass cover

Note that the sightglass cover is only available for UNA 23h/v.

38

H

B1 S


UNA 23h, UNA 25h, UNA 26h, UNA 26h stainless steel with

control unit DUPLEX-MAX

H

B


S

5

Dimensions – continued – Dimensions – continued –

UNA 23v, UNA 25v, UNA 26vUNA 23v, UNA 25v, UNA 26v with control unit DUPLEX

UNA 23v with control unit DUPLEX and sightglass cover

Note that the sightglass cover is only available for UNA 23h/v.

UNA 23v, UNA 25v, UNA 26v with control unit SIMPLEX-MAX

G

38

L 1 L

B S

38

L 1 L

B1 S




S

L 1

L

B

Dimensions – continued –

DN[mm] 15 20 25 40 50

[inch] ½ ¾ 1 1½ 2

UNA 23h, UNA 25h, UNA 26h,UNA 26hstainlesssteel

L1 94 94 94 154 154

B 199 204 209 301 308

B1 232 237 242 341 349

H 184 184 184 318 318

H1 126 126 126 219 219

H2 58 58 58 99 99

UNA 23v, UNA 25v,UNA 26v

L1 184 184 184 318 318

B 267 272 282 411 418

B1 310 315 320 451 459

G 94 94 94 154 154

For lengths of installation L/LX see table “End dimensions”.LX = length of installation for UNA 26h stainless steel.

Weight

UNA23h/v, UNA 25h/v, UNA 26h/v withcontrol unit SIMPLEX / DUPLEX

Connection /Flanges

DN

[mm] 15 20 25 40 50

[inch] ½ ¾ 1 1½ 2

UNA 23h [kg] 9 9.5 10 29 30

UNA 23h withsightglass cover

[kg] 11 11.5 12 34.5 35.5

UNA 23v [kg] 8.5 9 10 30 31

UNA 23v withsightglass cover

[kg] 10.5 11 12 35.5 36.5

UNA 25h [kg] 9.5 10 10.5 30 31

UNA 25v [kg] 9 9.5 10.5 31 32

UNA 26h [kg] 9.5 10 10.5 30 31

UNA 26h stainless steel

[kg] 10 10.5 11 31 32

UNA 26v [kg] 9 9.5 10.5 31 32

Weight of all traps fitted with a SIMPLEX-MAX orDUPLEX-MAX control unit: add 1 kg.

UNA26h withcontrol unit SIMPLEX / DUPLEX

Connection /ScrewedButt-weldSocket-weld

DN

[mm] 15 20 25 40 50

[inch] ½ ¾ 1 1½ 2

UNA 26h [kg] 8 7.9 7.8 25.4 25.3

UNA 26h stainless steel

[kg] 8.5 8.4 8.3 26.4 26.3

Weight of all traps fitted with a SIMPLEX-MAX orDUPLEX-MAX control unit: add 1 kg.

6

Key

1 Hexagon-socket screw

2 Name plate

3 Control unit SIMPLEX

4 Body gasket (graphite/CrNi)

5 Hand vent valve

6 Gasket

7 Control unit Duplex

8 Plug

9 Float lifting lever with separate leverextension

0 Cover

a Hexagon-socket screw

b Orifice

c Seat gasket for control unitSIMPLEX / DUPLEX

d Protective sleeve against wear

e Body

f Hexagon nut

g Fixing stud

h Hexagon-socket screw

i Flange for sightglass cover

j Gasket (graphite/CrNi)

k Water-level gauge glass

l Sightglass cover

Spare parts list see pages 8 and 9

Component parts of UNA 23h, UNA 25h, UNA 26h with control unit SIMPLEX / DUPLEX

Component parts of UNA 23v, UNA 25v, UNA 26v with control unit SIMPLEX / DUPLEX

Sightglass cover (optional) UNA 23h/v

1 2

3

4

5

6

7

8

9

0

a

bc

d

e

6

6

6

8

2

g

a

h

ij

kj

l

f

e

7

Component parts of UNA 23h, UNA 25h, UNA 26h

with contol unit SIMPLEX-MAX / DUPLEX-MAX

Component parts of UNA 23v, UNA 25v, UNA 26v

with contol unit SIMPLEX-MAX / DUPLEX-MAX

Key

1 Hexagon-socket screw

2 Name plate

3 Control unit SIMPLEX

4 Body gasket (graphite/CrNi)

5 Hand vent valve

6 Gasket

7 Control unit Duplex

8 Plug

9 Float lifting lever with separate leverextension

0 Cover

a Hexagon-socket screw

b Orifice

c Seat gasket for control unitSIMPLEX / DUPLEX

d Protective sleeve against wear

e Body

f Hexagon nut

g Fixing stud

h Hexagon-socket screw

i Flange for sightglass cover

j Gasket (graphite/CrNi)

k Water-level gauge glass

l Sightglass cover

m Control unit SIMPLEX-MAX / DUPLEX-MAX

n Deflector

o Support

p Bracket

q Thermostatic capsule 5N2 (deaeration)

r Venting pipe

s Hexagon-socket screw

Spare parts list see pages 8 and 9

r

g

m

s

n

2

4

56p

8

9

0

q

bc

d

e

f

6

6

8

8

o

s

g

f

2e

8

Spare Parts List for UNA 23h/v, UNA 25h/v, UNA 26h/v

Item DesignationStock code # Stock code #

DN 15 – 25 DN 40 + 50

4 Body gasket 1) (graphite/CrNi) 560 491 560 492

6 Gasket 1) 560 486 560 486

j Sightglass gasket 2) (graphite/CrNi) 560 487 560 488

j kSightglass (level-indicating gauge)with gasket

560 481 560 480

cSeat gasket 1) (graphite/CrNi) 560 489 560 490

Seat gasket 2) (graphite/CrNi) control unit MAX 560 547

4 7 a

b c

Control unit DUPLEX, complete Orifice 2 560 073 560 088

Orifice 4 560 074 560 089

Orifice 4 MAX 560 575

Orifice 8 560 075 560 090

4 6 b

c m o

p q r

s

Control unit DUPLEX-MAX, complete Orifice 8 MAX 560 576

Orifice 13 560 076 560 091


Orifice 22 560 077 560 092


Orifice 32 560 078 560 093


3 4 a

b c

Control unit SIMPLEX, complete Orifice 2 560 067 560 082

Orifice 4 560 068 560 083


Orifice 8 560 069 560 084


4 b c

m s

Control unit SIMPLEX-MAX, complete Orifice 13 560 070 560 085


Orifice 22 560 071 560 086


Orifice 32 560 072 560 087


3 4 a

cControl unit SIMPLEX, completewithout orifice

560 079 560 094

4 7 a

cControl unit DUPLEX up to 13 bar, completewithout orifice

560 080 560 095

4 7 a

cControl unit DUPLEX above 13 bar, completewithout orifice

560 081 560 096

a b c Orifice, completewithout control unit

Orifice 2 560 040 560 046

Orifice 4 560 041 560 047


Orifice 8 560 042 560 048


Orifice 13 560 043 560 049


Orifice 22 560 044 560 050


Orifice 32 560 045 560 051


5 6 Hand vent valve with gasket 560 058

6 o p

q rAir-venting unit, complete,for control unit DUPLEX-MAX

560 548

1) Minimum order quantity 20 items.2) Minimum order quantity 10 items. Contact your local dealer for smaller quantities.

9

3 4 a

cControl unit SIMPLEX, completewithout orifice

560 103 560 110

4 7 a

cControl unit DUPLEX up to 13 bar, completewithout orifice

560 401 560 403

4 7 a

cControl unit DUPLEX above 13 bar, completewithout orifice

560 400 560 402

a b c Orifice, completewithout control unit

Orifice 2 560 111 560 117

Orifice 4 560 112 560 118


Orifice 8 560 113 560 119


Orifice 13 560 114 560 120


Orifice 22 560 115 560 121


Orifice 32 560 116 560 122


5 6 Hand vent valve with gasket 560 125

6 o p

q rAir-venting unit, complete,for control unit DUPLEX-MAX

560 548

Spare Parts List for UNA 26h stainless steel

Item DesignationStock code # Stock code #

DN 15 – 25 DN 40 + 50

4 Body gasket 1) (graphite/CrNi) 560 491 560 492

6 Gasket 2) 560 514 560 514

cSeat gasket 1) (graphite/CrNi) 560 489 560 490

Seat gasket 2) (graphite/CrNi) control unit MAX 560 547

4 7 a

b c

Control unit DUPLEX, complete Orifice 2 560 394 560 388

Orifice 4 560 395 560 389


Orifice 8 560 396 560 390

4 6 b

c m o

p q r

s

Control unit DUPLEX-MAX, complete Orifice 8 MAX 560 576

Orifice 13 560 397 560 391


Orifice 22 560 398 560 392


Orifice 32 560 399 560 393


3 4 a

b c

Control unit Simplex , complete Orifice 2 560 097 560 104

Orifice 4 560 098 560 105


Orifice 8 560 099 560 106


4 b c

m s

Control unit SIMPLEX-MAX, complete Orifice 13 560 100 560 107


Orifice 22 560 101 560 108


Orifice 32 560 102 560 109


1) Minimum order quantity 20 items.2) Minimum order quantity 10 items. Contact your local dealer for smaller quantities.

10

Steam Traps

UNA 23h/v

UNA 25h/v

UNA 26h/v

UNA 26h Stainless Steel

GESTRA AGP. O. Box 10 54 60, D-28054 BremenMünchener Str. 77, D-28215 Bremen

Telephone +49 (0) 421 35 03 - 0, Fax +49 (0) 421 35 03-393

E-Mail [email protected], Internet www.gestra.de

810486-06/409cm · 2007 GESTRA AG · Bremen · Printed in Germany

Supply in accordance with our general terms

of business.

Capacity Chart

The chart shows the maximum capacities of hot conden-

sate for the range of orifices.

The capacities are dependent on the differential pres-

sure (working pressure). The differential pressure is the

difference between inlet and outlet pressures and depends

among other things on the run of the pipe. If the condensate

downstream of the trap is lifted, the differential pressure is

reduced by approximately 1 bar for 7 m in lift.

The max. admissible differential pressure is a function of

the cross-sectional area of the orifice and the density of

the fluid to be discharged.

Solid line curvesshow the max. flowrate of hot condensate that the steam

traps UNA 23, UNA 25 and UNA 26 can discharge with

virtually no banking-up.

The cold water capacities are:

Capacity of hot condensate multiplied by factor F.

Cold water capacity UNA 2..-MAXThe cold water capacity of steam traps with SIMPLEX-

MAX / DUPLEX-MAX control unit is:

Flowrate multiplied by factor F.

For differential pressure ∆ PMX > 1 bar the following

factors are applicable:

AO 4 MAX, AO 8 MAX: factor F = 1.65

AO 13 MAX, AO 22 MAX, AO 32 MAX: factor F = 1.45

When ordering please indicate

Body material, material of screws/bolts, steam pressure & temperature, back pressure, condensate flowrate, trap model, end connection, size, orifice number, details of application or type of steam user.

The following test certificates can be issued on request, at extra cost:In accordance with EN 10204-2.1, -2.2, -3.1 and 3.2.

All inspection requirements have to be stated with the

order. After supply of the equipment certification cannot be

established. For other test certificates, tests and inspection

charges please consult us.

PED (Pressure Equipment Directive)

The equipment fulfills the requirements of the Pressure Equipment Directive PED 97/23/EC.

UNA 23 and UNA 25 for applications with fluids of group 2; UNA 26, UNA 26h stainless steel and UNA 27h for applications with fluids of group 1 and 2.

With CE marking (apart from equipment according to

section 3.3).

ATEX (Atmosphère Explosible)

The equipment does not have its own potential source of ignition and is therefore not subject to the ATEX Directive 94/9/EC. The equipment can be used in potentially explo-sive areas 0, 1, 2, 20, 21, 22 (1999/92/EC). The equipment is not Ex marked.

Capacity Chart

0.1 0.2 0.3 0.4 0.6 0.8 21 3 4 6 8 10 20

[bar]

32

100

200

300

400

600

800

1000

2000

3000

4000

[kg/h]

7000

6000

5000

500

DN 15-25 - Orifice 32





DN 15-25 - Orifice 2DN 40-50 - Orifi

ce 32



DN 40-50 - Orifice 8DN 40-50 - Orifice 4DN 40-50 - Orifice 2

[psi]

2 3 4 6 8 10 20 30 40 60 80 100 200 4651.5

200

300

400

600

800

1000

2000

3000

4000

6000

8000

10000

[lb/h]

500

UNA 23h/v, UNA 25h/v, UNA 26h/v, UNA 26h stainless steel with control unit SIMPLEX / DUPLEX

UNA 23, UNA 25, UNA 26, UNA 26h stainless steel, DN 40, 50, with control unit SIMPLEX-MAX / DUPLEX-MAX

Factor F = 1 1.1 1.18 1.2 1.3 1.4 1.48 1.53

Cap

acity

PMX

Cap

acity

a03c

Documents

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