Valve selection for the main LNG pipeline at large receiving stations
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Small gasification stations use globe valves, but what about large receiving stations? Those with diameters ranging from DN300 to 800 – on some PID diagrams, butterfly valves are shown as the appropriate type; I think ball valves would be more suitable. Should globe valves, butterfly valves, or ball valves be used? Please advise. Also, is a pneumatic-hydraulic system necessary? After all, hydraulic systems used in low-temperature environments might freeze over.
It seems that few companies can produce globe valves with a diameter of 800! If possible, pneumatic cryogenic stop valves should be more than capable of handling it! It’s just my personal opinion! Looking forward to your guidance!