Material requirements for ethylene valves

2017-04-18View Original

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Seeking help: The specifications for the valve materials in the ethylene plant require the following. Please explain: For the valve body, 316ST and 316STM are specified. What is the difference between these and ordinary 316SS? What are the requirements for the various trim materials? S/TFE trim, S/KEL F trim, Harden faced S/kel F trim, API trim 8, 304H trim. Is it possible to use 316SS instead?

Reply #22017-04-24

I don’t understand; I only know that it’s made of 316 material, and stainless steel is corrosion-resistant

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Material requirements for ethylene valves

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