Cryogenic Ball Valve

According to the standard requirements, the ball valve with temperature lower than - 50C is generally designed with a long neck structure to increase the temperature at the filler and ensure the reliable sealing of the valve rod filler. The neck length is generally designed according to the standard requirements, and the user can also meet the contract requirements if he has special requirements.

For valves used for low-temperature medium, when the valve is in the closed position, the volume of low-temperature liquid medium trapped in the middle chamber of the valve will expand rapidly due to gasification when the temperature rises, which will lead to abnormal pressure rise in the middle chamber of the control valve, and serious accidents such as valve rupture will be caused. The ball valve of our company has the function of automatic pressure relief in the middle chamber. When the middle chamber rises abnormally, the medium in the middle chamber can automatically relieve pressure by pushing the seat adjustment with its own force, thus ensuring the safety of the control valve.

According to the contract requirements, low temperature test can be carried out to check the operating torque, sealing performance and other indicators of the valve at low temperature.

The parts of the valve are treated at low temperature to ensure the stability of the shape and size of the parts at low temperature.

• Product Standard: BS 6364 low temperature valve, ASME B 16.34 Flange end, Threaded end and Welding end valve, SHELL SPE 77/200 Valves for Low and Ultra Low Temperature Service, GB/T 24925 Technical Conditions for Low Temperature Valves

• Nominal Pressure: PN16~PN100 (CLASS 150~CLASS 1500), JIS 10K~JIS 20K

• Nominal Dimension: Side entry floating ball valve DN15 (1/2"-)~DN150 (6"),

Top entry floating ball valve DN15 (1/2")~DN150 (6"),

Side entry fixed ball valve DN150 (6")~DN300 (12"),

Top entry fixed ball valve DN150 (6")~DN300 (12")

• Main Material: ASTM A351 CF8/ASTM A351 CF8M/ASTM A351 CF3/ASTM A351 CF3M

• Operating Temperature: - 196 ° C~- 29C

• Applicable Intermediaries: Liquid ammonia, liquid hydrogen, liquid ring, liquid gold, liquid oxygen, wave methane, liquid carbon dioxide, liquefied natural gas, etc.

• Connection Mode: Flange, Wafer, Welding

• Transmission Mode:Manual, worm gear, pneumatic or electric