Difference in API607 5th

[johnsmith2]

What is the difference between API 607 4th and 5th edition? We would like to do the fire test on the new valve. Thanks.

 

[NGiLuzzu]

johnsmith2,
please take a look at thread182-133010 and other related threads...

Regards, 'NGL

 

[mirdcchang]

There are two major difference
1. there are high pressure test(75% working pressre) and low pressure test
2. after cooling down.Close the downstream valve.Open the test valve. then measure the external leakage.
Sometimes it's fail because the test valve can't open.