Cryogenic gate valve
Valve size: NPS3/4~NPS16 DN20～DN400
Pressure rating: 150LB ~ 600LB, PN10 ~ PN100
Material: LCB, LC1, LC2, LC3, LC9, CA6NM, CF8, CF8M
Design and manufacturing standards: GBT 24925, ASME B16.34, GB/T 12234
Face to face standards: ASME B 16.10, GB/T12221
End standard: Any standard can be set as required, and the connection method can be flange, butt welding, socket welding, thread, etc.
Stress test standards: GB/T 13927, API 598, BS EN 12266 -1
Quality / Product Certification: ISO 9001, API 6D, PED 2014/68/EU, EAC, ATEX and OSHAS 18001
Safety and reliability: in line with SIL3
Specification
Valve size: NPS3/4~NPS16 DN20～DN400
Pressure rating: 150LB ~ 600LB, PN10 ~ PN100
Material: LCB, LC1, LC2, LC3, LC9, CA6NM, CF8, CF8M
Design and manufacturing standards: GBT 24925, ASME B16.34, GB/T 12234
Face to face standards: ASME B 16.10, GB/T12221
End standard: Any standard can be set as required, and the connection method can be flange, butt welding, socket welding, thread, etc.
Stress test standards: GB/T 13927, API 598, BS EN 12266 -1
Quality / Product Certification: ISO 9001, API 6D, PED 2014/68/EU, EAC, ATEX and OSHAS 18001
Safety and reliability: in line with SIL3
Optional valve actuators: polished rods, gears, handwheels, electric actuators, etc.
Sealing grade: API 598 (zero leak), grade six (FCI 70-2), ISO 5208 grade A
Characteristics
In order to prevent the abnormal rise of the middle cavity, a pressure relief hole is provided on the inlet side of the shutter.
For all valve parts with a temperature less than -100 °C, cryogenic treatment according to relevant regulations to prevent low-temperature brittleness of materials and volume change caused by material phase transformation at low temperatures.
The long neck structure is adopted to make the working temperature of the packing above 0 °C, which effectively prevents the sealing property from being lowered due to the working temperature being too low, and even the sealing failure, and at the same time, it is convenient to wrap the insulating material with the valve to prevent the loss of cold energy. When the temperature is lower than -100 °C, the stem material is chrome-plated or nitrided to improve the surface hardness of the stem and improve the reliability of the filler.
The gasket has reliable sealing and recovery at normal temperature, low temperature and temperature change.
The flow direction of the medium is not limited, and it does not disturb the flow and does not reduce the pressure.
The utility model has the advantages of simple shape, short structure length, good manufacturing process and wide application range.
