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Design requirements for cryogenic valves

According to the conditions of use, the design of low temperature valve has the following requirements:

1, the valve in low temperature medium and ambient temperature should have the ability to work for a long time.

3, low temperature medium should not have a harmful effect on the handwheel operation and packing sealing performance.

4, direct contact with low temperature medium valve assembly should have explosion-proof and fire structure.

5,The valve assembly parts working at low temperature cannot be lubricated, so structural measures need to be taken to prevent friction parts from chafing.

6, the valve should not become a significant heat source of the low temperature system. This is because the inflow of heat in addition to reducing the thermal efficiency, such as excessive inflow, but also make the internal fluid rapid evaporation, abnormal boost, causing danger.