API Std 622

This API Standard specifies the requirements for comparative testing of block valve stem packing for process applications where fugitive emissions are a consideration. Packing(s) shall be suitable for use at -20°F to 1000°F (-29°C to 538°C). Factors affecting fugitive emissions performance that are considered by this Standard include temperature, pressure, thermal cycling, mechanical cycling and corrosion.

This standard does not provide acceptance criteria for valve packing, nor is it intended to replace proof testing of valve assemblies or valve production testing. This standard establishes requirements and parameters for fugitive emissions, corrosion, and packing material packing tests. The test methods apply to valve packing for use with the rising and rotating stem motion.

Product Details

Edition:

1st

Published:

08/01/2006

Number of Pages:

23

File Size:

1 file , 670 KB

Product Code(s):

C62201, C62201, C62201

Note:

This product is unavailable in Russia, Cuba, Syria, North Korea, Ukraine, Belarus, Iran

This standard specifies the requirements for comparative testing of valve stem packing for process applications where fugitive emissions are a consideration. Packing(s) shall be suitable for use at service temperatures -29°C to 538°C (-20°F to 1000°F). Factors affecting fugitive emissions performance that are considered by this standard include temperature, pressure, thermal cycling, mechanical cycling, and corrosion.

This standard is not intended to replace type testing of valve assemblies or valve production testing.

This standard establishes requirements and parameters for the following tests:
a) fugitive emissions,
b) corrosion, and
c) packing material composition and properties.

Test methods apply to packing for use in on-off valves with the following stem motion(s):
a) rising stem, and
b) rotating stem.

The test for fugitive emissions is based upon elements of EPA Method 21, providing comparative values of packing performance.

Product Details

Edition:

2nd

Published:

10/01/2011

Number of Pages:

42

File Size:

1 file , 2.1 MB

Product Code(s):

C62202, C62202, C62202

Note:

This product is unavailable in Russia, Cuba, Syria, North Korea, Ukraine, Belarus, Iran