Valve factory testing
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Is it necessary to conduct a flow capacity test on valves at the time of manufacture?
It seems there’s no need to do it; it’s already been calculated
It depends on the type of valve; if the process requirements are high, it’s necessary to use such valves. For example, many ball valves have a reduced diameter, and in that case the flow capacity won’t meet the required standards. :lol
Most manufacturers are actually unable to conduct circulation capacity tests. . . Actually, it can be calculated based on the processing dimensions
According to GB/T26480 and GB/T12224, the factory inspection of valves mainly includes checks on appearance, material, etc., as well as pressure testing~~
It depends. Usually, only compression tests are conducted; many don’t carry out this flow test either
It’s not necessary, unless it’s a control valve
For ordinary gate, stop, check, ball, and butterfly valves, it is not necessary to do so unless there are special requirements; the standards do not specify such actions.