API Std 526

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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.

Product Details

Edition:
8th
Published:
08/01/2023
Number of Pages:
160
File Size:
1 file , 2.6 MB
Product Code(s):
C52608, C52608, C52608
Note:
This product is unavailable in Russia, Cuba, Syria, North Korea, Ukraine, Belarus, Iran
API Std 526

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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; and center-to-face dimensions, inlet and outlet.

Product Details

Edition:
5th
Published:
06/01/2002
Number of Pages:
42
File Size:
1 file , 310 KB
Product Code(s):
C52605R, C52605, C52605, C52605R, C52605, C52605R
Note:
This product is unavailable in Cuba, Iran, North Korea, Syria
API Std 526

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Please note that any addenda or errata may not be included in translated editions of this standard.

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.

Product Details

Edition:
7th
Published:
09/01/2017
Number of Pages:
53
File Size:
1 file , 1.5 MB
Redline File Size:
2 files , 10 MB
Product Code(s):
C52607, C52607, ?52607R, C52607, ?52607R, C52607, ?52607R, C52607, C52607
Note:
This product is unavailable in Cuba, Iran, North Korea, Syria
API Std 526

Click here to purchase
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.

Product Details

Edition:
6th
Published:
04/01/2009
Number of Pages:
43
File Size:
1 file , 1.9 MB
Redline File Size:
2 files , 3.1 MB
Product Code(s):
C52606, C, C52606, C, C52606, C
Note:
This product is unavailable in Cuba, Iran, North Korea, Syria