API STD 527
COMMERCIAL SEAT TIGHTNESS OF SAFETY RELIEF VALVES WITH METAL-TO-METAL SEATS
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| Organization: | API |
| Publication Date: | 1 September 1964 |
| Status: | inactive |
| Page Count: | 4 |
scope:
This standard describes a method of determining seat tightness of safety relief valves as covered in API Standard 526: Flanged Steel Safety Relief Valves for Use in Petroleum Refineries. The maximum acceptable leakage rates are defined for commercial safety relief valves with metal-to-metal seats for set pressures up to 1,000 psig.
If greater tightness is required, it can be supplied but must be specified on the purchase order or inquiry.
Document History
July 1, 2020
Seat Tightness of Pressure Relief Valves
This standard describes methods of determining the seat tightness of metal- and soft-seated pressure relief valves, including those of conventional, bellows, and pilot-operated designs.
The maximum...
November 1, 2014
Seat Tightness of Pressure Relief Valves
This standard describes methods of determining the seat tightness of metal- and soft-seated pressure relief valves, including those of conventional, bellows, and pilot-operated designs.
The maximum...
July 1, 1991
Seat Tightness of Pressure Relief Valves
This standard describes methods of determining the seat tightness of metal- and soft-seated pressure relief valves, including those of conventional, bellows, and pilot-operated designs.
The maximum...
January 1, 1991
Seat Tightness of Pressure Relief Valves
SECTION 1--SCOPE This standard describes methods of determining the seat tightness of metal- and soft-seated pressure relief valves, including those of conventional, bellows, and pilot-operated...
January 1, 1991
Seat Tightness of Pressure Relief Valves
This standard describes methods of determining the seat tightness of metal- and soft-seated pressure relief valves, including those of conventional, bellows, and pilot-operated designs. The maximum...
API STD 527
September 1, 1964
COMMERCIAL SEAT TIGHTNESS OF SAFETY RELIEF VALVES WITH METAL-TO-METAL SEATS
This standard describes a method of determining seat tightness of safety relief valves as covered in API Standard 526: Flanged Steel Safety Relief Valves for Use in Petroleum Refineries. The maximum...