Product--HYPER-CRYOGENIC EMERGENCY SHUT-OFF VALVE


WY-C18GC	–Features: 　Model WY-C18GS extension bonnet control valves used for low temperature service to protect valve stem packing from the extreme temperatures. Standard TFE valve stem packing is generally useful for most applications up to 232C. However, it is susceptible to damage at low process temperatures if frost forms on the valve stem. The frost crystals can cut groovs in the TFE, forming leakage paths for process fluid along the stem. Extension bonnets can remove the packing box of the the bonnet far enough from the extreme temperature of the process that the packing temperature remains within the recommend range.

Specification

Body
Type:	Globe valve
Material:	SCS13, SCS14
Size:	3/4", 1", 1-1/2", 2", 3", 4"
End connection:	Flanged end
Rating:	JIS20k. ANSI 300Ib
Bonnet:	Extension bonnet. (-196~+100C)
Packing:	TFE
Guide:	Top guide.
Trim
Valve plug:	Quik open
Valve Stem:	SUS304 or SUS316
Sealing ring:	2F teflon
Actuator
Type:	Cylinder actuated spring return
Cylinder:	SUS304
Operating air pressure:	3.0-5.0kg/cm2
Pneumatic tubing connection:	1/4" female tap.
Ambient temperature:	-20 ~ +60C
Valve action	Air to open or air to close by using direct or reverse actuator.
Accessory	Solenoid valve, limit switch, air set or others
Performance
Leakage of full closure:	Class VI
Service:　For L.02, L.N2 or ther low temperature fluids.
Working temperature:	-196~+100C
Operating air supply:	3.0-5.0kg/cm2
Action:	Normae. close, air to open
Connection rating:	JIS 20k