Plug valve pressure testing plan
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As the title suggests, the company has acquired a new batch of plug valves to be used in hydrogen fluoride-free pipelines, with an operating pressure of 25 kilograms. (The valve certificate specifies DN50, a nominal pressure of 300LB, and a gas-tightness test pressure of 0.6 Mpa.) The construction team is currently conducting a pressure test before installing the valves. I would like to know what pressure should be used for the gas-tightness test (as water-based testing is not feasible due to production constraints). Waiting online! ! ! !
There’s no problem in creating an airtight seal at around 25 BAR
Check the valve agreement signed to see if there are any specified testing standards; if not, determine whether the standards followed in valve manufacturing are American or Chinese. National standard testing specification \"JT9092-1999 Valve Inspection and Testing\", American standard \"API598\". https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1770381&extra=
\"API 598-2016 Inspection and Testing of Valves\" can be found online via Baidu.
Thank you all. The valves are pressure-tested in accordance with the API598 testing standards, but due to the specific requirements of the application environment, gas is the only medium that can be used for the airtightness test. The manufacturer’s written advice states that the pressure for this airtightness test should be 0.6 Mpa (as high pressures might damage the valve when it is in the fully closed position), whereas the required pressure for the actual application is 2.5 Mpa; therefore, it is not possible to conduct a test for internal leakage