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Pneumatic cryogenic ball valve is special ball valve for the medium with its temperature from -40 ° C to -196 ° C. Cryogenic ball valve with pneumatic actuator can be used for cryogenic fluids, such as liquefied natural gas, liquid nitrogen, liquid oxygen, and liquid argon,etc.
Pneumatic cryogenic ball valve is subjected to special cryogenic treatment to ensure the cryogenic performance of the material. When operating in cryogenic conditions, it will not cause deformation and leakage due to temperature changes.The bonnet of Pneumatic cryogenic ball valve adopts a extended design structure, and its purpose is to protect the function of the packing box, so that the packing box is located far away from the cryogenic temperature to ensure the sealing effect of the packing.
Pneumatic Actuator Parameters | Cryogenic Ball Valve Parameters | ||
Actuator Type | single-acting(FO,FC),double-acting (FL) | Nominal Diameter | DN15~200mm |
Air Supply Pressure | double-acting:2-8bar; single-acting:4-8bar | Nominal Pressure | PN16,PN25,PN40,etc |
Output Torque | double-acting:4N·M~10560N·M | Valve Stem | stainless steel |
single-acting:7N·M~2668N·M | Body Material | SS304,SS316,SS316L | |
Working Temperature | Normal temperature type:-20℃~80℃(Nitrile rubber O-ring) | Valve Ball | SS304 |
High temperature type:-20℃~160℃(Fluorocarbon O-ring) | Seat Seal | PTFE/PCTFE | |
Action Range | 0~90°±5° | End Connnection | flange type |
Interface thread | GTD40~GTD83/ATD50~ATD88 G1/8″ | Application Medium | LNG,LN2,LOX,LAr,LCO2,etc |
GTD110~GTD350/ATD100~200 G1/4″ | |||
Valve position signal | Positioner:4~20mA; Limit Switch:full open/full close signal | Feature | cryogenic temperature resistance, flexible open & close and reliable sealing |
Pneumatic cryogenic ball valve Applicable Standards:
Design: API6D, API608,ASME B16.34, ISO14313, MSS SP-72
Face to face: ASME B16.10,AP6D
Flange end: ASME B16.5,ASME B16.47,EN1092, GOST 33259,etc.
Butt welded end: ASME B16.25
Leakage standard: ANSI B16.104
Inspection and test API 598,API6D