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MSS SP-61 - Pressure Testing of Valves

This Standard Practice for Pressure Testing of Valves was originally adopted in 1961. It was developed for the purpose of providing a uniform means of testing valves commonly used in the "full open" and "full closed" type of service. It is not intended for use with control valves. Refer to standards ISA-S75.19 and ANSI/FCI 70-2 for Control Valves.


This Standard Practice establishes requirements and acceptance criteria for shell and seat closure pressure testing of valves.

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