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standards for butterfly valve

standards for butterfly valve

standards for butterfly valve

(OP)
Which standards has to refer while designing a double offset butterfly valve?
Pl. Mention design and testing standards.
Also for calculating valve torque for a double offset butterfly valve, what factors has to be consider like bearing torque, seating and unseating torque, packing torque, is there any standard for these calculations?

RE: standards for butterfly valve

MSS SP-68, and API 609 are the two main design standards

RE: standards for butterfly valve

(OP)
Thank you sir ...

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