How to choose a shut-off valve on a high-pressure steam pipeline
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Superheated steam 3.6MPa (G) 435℃ DN 250 pipeline. This process pipeline needs a switch valve to cut off the steam. Valve material (valve body, valve core), form, leakage level. How to choose generally? Please give me some advice if you have used it under similar working conditions. Thank you.
Steam pipelines generally use gate valves. The material mainly depends on pressure and temperature. Based on your temperature and pressure comparison, I feel that 304 steel may hang, which may not work. It is better to choose 316. If the leakage level is such a high temperature, you should choose a metal seal. Level 4 is relatively common, and domestic valves can do it.
This kind of working condition does not require too high temperature and pressure. You can find a manufacturer and it can be done.
The 316 valve trim and hard-sealed butterfly valve also have a small pressure difference and are energy-saving.