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About This Item
Full Description
This standard is a purchase specification for flanged steel pressure-relief valves. Basic requirements are given for direct spring-loaded pressure-relief valves and pilot-operated pressure-relief valves as follows:
— orifice designation and area;
— valve size and pressure rating, inlet and outlet;
— materials;
— pressure-temperature limits;
— center-to-face dimensions, inlet and outlet.
Nameplate nomenclature and requirements for stamping are detailed in Annex A.
Document History
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API Std 526
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Flanged Steel Pressure-relief Valves, Eighth Edition- Most Recent
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API Std 526
Flanged Steel Pressure-relief Valves, Seventh Edition, Includes Errata 1 (2018)- Historical Version
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API Std 526
Flanged Steel Pressure-relief Valves, Sixth Edition (Includes Errata 1, Errata 2)- Historical Version
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API Std 526
Flanged Steel Pressure Relief Valves, Fifth Edition- Historical Version
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API 526
Flanged Steel Pressure Relief Valves- Historical Version