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Valves for Cryogenic ServiceType 27511 - Pneumatic Actuator Pneumatic Actuators Standard actuator - air opens, spring closesmaximum air pressure for operation 6.0 bar üActuator coating outside - Epoxy resinAvailable options - on request only:· Actuator - spring opens, air closes· Actuator - cleaned and degreased for oxygen service· Pneumatic actuator with override handwheel Ambient temperature limit: -20°C / -4°F (253K) up to +80°C / 176°F (353K) Overview - required actuator sizes for different working pressures

Code in

Nom. Lift

Working pressure in bar

Table Part No. Actuator

Size in mm 2 4 5 6 8 10 15 17 20 25 30 35 40
A 27511.15A6.3SPO DN 10 14 A A A A A A A A A A A A A
B 27511.35B6.6GPO DN 15 14 A A A A A A A A A A A A A
C 27511.60A6.6GPO DN 20 12 A A A A A A A A A A B B B
D 27511.60C6.7GPO DN 25 14 A A A A A A A B B B B B B
E 27511.41B6.6SPO DN 32 15 A A A A A A B B B B B B C
F 27511.41C6.2SPO DN 40 18 B B B B B B B B B C C C C DN 50 19 B B B B B B C C C D D E E DN 65 25 C C C C C C D D E E E F o.r. DN 80 30 C C C D D E E E F F F o.r. o.r. DN 100 30 C C D D E E F o.r. – on request DN 150 40 D E F o.r. – on request

Materials DIN EN ASTM

1 Body 1.0333 A 619 Grade 1008

M

2 Body 1.0333 A 619 Grade 1008 3 Diaphragm NBR 4 Springs 1.1200 A 576 Grade 1045 5 Actuator stem 1.4301 A 276 Grade 304

4356 12

6 Coupling CC333G B 148 UNS C95800

G H

Type 27511 Technical data

Part No. Actuator 27511 .15A6.3SPO .35B6.6GPO .60A6.6GPO .60C6.7GPO .41B6.6SPO .41C6.2SPO Diameter actuator M 162 210 320 320 415 415 Height H 204 260 296 339 399 570 Thread G

2

M12 M12 M12 M12 M16 M16 Diaphragm area cm 120 280 530 530 1000 1000 Spring range bar 0.9 – 2.0 0.8 – 3.0 0.8 – 2.8 0.7 – 3.0 0.6 – 2.3 1.0 – 2.5 Regulating lift mm 20 35 40 60 60 80 Weight ca. kg 3.0 5.0 12.5 14.0 47.0 76.0

Dimensions in mm.

152Edition 04-2009

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