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  Location: home / valves / Spring Type Diaphram Packless / ST-4 SERIES
 

SPRING TYPE DIAPHRAGM ST-4 SERIES

Specifications:

ROUND HANDLE MANUAL
PRESSURE RATING: 3500 PSIG
FLOW COEFFICIENT: Cv =.26
SEAT ORIFICE SIZE: .125 DIAMETER
STANDARD SEAT MATERIAL: PCTFE
TEMPERATURE LIMITS PCTFE SEAT:
-65F to 150F
TEMPERATURE LIMITS OPTIONAL
POLYIMIDE SEAT: -65F to 250F
MAX ALLOWABLE SEAT LEAKAGE:
2 x 10-8 ATM cc/sec He
MAX INBOARD LEAKAGE:
2 x 10-8 ATM cc/sec He
WETTED DIAPHRAGM: 316L SST
STANDARD BOTTOM MOUNT: 2 x #10-32
TAPPED HOLES ON A 1” BOLT CIRCLE

 

Features and Benefits

SPRING TYPE DESIGN
STANDARD FORGED BODY PIPE THREADED DESIGNS (AVAILABLE
WITH PM OPTION)
STANDARD BAR STOCK BODY FOR NON-PIPE THREADED DESIGNS
(BOTTOM MOUNT STANDARD, AVAILABLE WITH PM OPTION)
POSITIVE SHUT-OFF
CLEANED FOR OXYGEN SERVICE
100% HELIUM LEAK TESTED

Additional Configuration Options

ELECTROPOLISHED ID SURFACE AVAILABLE ON REQUEST
CUSTOM MATERIALS AND CONFIGURATIONS AVAILABLE ON REQUEST

 

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Seat Materials:

PCTFE
POLYIMIDE
 

End Connections:

1/4” MALE AND 1/4” FEMALE PIPE THREAD
1/4“ COMPRESSION
1/4 MALE AND 1/4 FEMALE FACE SEAL
1/4” AND 3/8” ORBITAL TUBE WELD
CUSTOM CONNECTIONS

BRASS
NICKEL PLATED BRASS
316L STAINLESS STEEL
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