API STD 526, 8th Edition – Flanged Steel Pressure-relief Valves
API 526 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 [metric units (SI)] and Annex E [U.S. customary units (USC)].
General Product Information:
| Revision | 8th |
| Document Type | |
| Pages | 160 |
| Document Language | English |
| Publisher | American Petroleum Institute (API) |
| Status | Current |
