Sale!

API Std 527

$108.00 $54.00

Seat Tightness of Pressure Relief Valves, Fifth Edition
standard by American Petroleum Institute, 07/01/2020

Category:

Description

This standard describes methods of determining the seat tightness of metaland soft-seated pressure relief valves, including those of conventional, bellows, and pilot-operated designs.

The maximum acceptable leakage rates are defi ned for pressure relief valves with set pressures from 103 kPa gauge (15 psig) to 41,379 kPa gauge (6000 psig). If greater seat tightness is required, the purchaser shall specify it in the purchase order.

The test medium for determining the seat tightness—air, steam, or water—shall be the same as that used for determining the set pressure of the valve. For dual-service valves, the test medium—air, steam, or water—shall be the same as the primary relieving medium.

To ensure safety, the procedures outlined in this standard shall be performed by persons experienced in the use and functions of pressure relief valves.

Product Details

Edition:
5th
Published:
07/01/2020
Number of Pages:
13
File Size:
1 file , 600 KB
Redline File Size:
2 files , 4.3 MB
Product Code(s):
C52705, C52705, C52705, C52705
Note:
This product is unavailable in Cuba, Iran, North Korea, Syria
Sale!

API Std 527

$93.00 $46.50

Seat Tightness of Pressure Relief Valves, Fourth Edition
standard by American Petroleum Institute, 11/01/2014

Category:

Description

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 acceptable leakage rates are defined for pressure relief valves with set pressures from 103 kPa gauge (15 psig) to 41,379 kPa gauge (6000 psig). If greater seat tightness is required, the purchaser shall specify it in the purchase order.

The test medium for determining the seat tightness—air, steam, or water—shall be the same as that used for determining the set pressure of the valve.

For dual-service valves, the test medium—air, steam, or water—shall be the same as the primary relieving medium.

To ensure safety, the procedures outlined in this standard shall be performed by persons experienced in the use and functions of pressure relief valves.

Product Details

Edition:
4th
Published:
11/01/2014
Number of Pages:
5
File Size:
1 file , 310 KB
Product Code(s):
C52704, C52704R, C52704R, C52704, C52704R, C52704
Note:
This product is unavailable in Cuba, Iran, North Korea, Syria