The Cryogenic Gate Valve is suitable for low-temperature media such as methane, liquid natural gas, hexene, carbon dioxide, liquid ammonia, liquid oxygen, liquid nitrogen, and liquid hydrogen. The valve cover is designed with a long neck structure that is convenient for cold insulation to ensure that the temperature at the bottom of the stuffing box is kept above 0 ℃. A pressure relief hole is set at the inlet side of the ram to prevent abnormal pressure rise in the cavity of the valve body. Low temperature impact test shall be conducted for valve materials to ensure that the materials will not be brittle damaged at low temperature. It is used for low-temperature gate valves below – 101 ℃, and valve parts shall be subject to cryogenic treatment before finishing.

Technical specification

Design & manufacturing standard as per ASME B16.34/API 600/BS EN ISO 17292(BS5351)
Face-to-face standard as per ASME B16.10
Fanged ends standard as per ASME B16.5/ASME B 16.25/ASME B 16.11/ASME B 1.20.1
Testing & inspection standard as per API598/BS EN 12266(BS6755)

Product Range

Body material: Carbon steel, Stainless steel, Alloy steel, Monel, Duplex, Inconel, etc
Size range(s):1/2″～16″
End Connection: RF, RTJ,BW, NPT,SW
Pressure rating: Class150 – Class1500
Working temperature: -196℃ – +80℃
Operation: handle wheel, worm gear, electric, etc

Design Features

To prevent abnormal pressure rise in the middle chamber, a pressure relief hole is set at the inlet side of the ram

Determine the top length of the bonnet according to the working temperature of the valve to ensure that the valve? Reliable sealing of packing

Materials of packing, gasket and other parts shall be reasonably selected according to the working temperature

Strictly control the chemical composition and low-temperature impact toughness of the material

Adopt a variety of pipe flange standards and sealing surface types, suitable for various engineering needs