Tag Archives: Valve Testing

API 527 Pressure Testing Standards Manual

Posted on October 28, 2014 by admin

API Standard 527, from the American Petroleum Institute, describes seat tightness testing and the maximum acceptable leakage rates for pressure relief valves. The current version of the standard was reaffirmed in 2007. Scope API 527 covers seat tightness testing of … Continue reading →

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MSS Standard SP-61 – Leakage Allowance

Posted on October 13, 2014 by admin

MSS Standard SP-61, from the Manufacturers Standardization Society, establishes leakage allowances and provides guidance for testing valves typically used in “full open” and “full closed” service, such as check, isolation, and stop valves. It is not intended for use with … Continue reading →

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API 598 Testing Standards: Valve Leakage & Ratings

Posted on October 13, 2014 by admin

API Standard 598, from the American Petroleum Institute, provides industry standards for valve ratings and valve leakage. The standard is currently in the 9th edition, which was released in 2009. Scope API 598 covers the inspection, examination, and testing requirements for … Continue reading →

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