Issues with the pipe cap of the pressure transmitter’s pressure tap drain valve?
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In the standard installation manual, the pressure transducer inlet pipes for measuring liquids are equipped with drain valves; for PN160 grades, there is a note stating that pipe caps are required when the medium is toxic or polluting. The question is: 1. Does the PN63 grade not require consideration of the pipe cap issue? 2. When it is PN160, pipe caps are required; how are contaminated or toxic media defined?
What is PN when it’s PN160? . . . . . . . . . . . . . . .
I think this is not rigorous. The proper approach is to install pipe caps or thread plugs on all drain ports. For high-pressure, toxic, and corrosive media, sealed discharge is required. As for what counts as high pressure? We consider values of >=CL900 to be high pressure. What counts as corrosion, what is toxic? This requires certification by a safety or process specialist. Theoretically, even the slightest amount of corrosion or toxicity counts.