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Difference in API607 5th

Difference in API607 5th

Difference in API607 5th

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

RE: Difference in API607 5th

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

Regards,     'NGL

RE: Difference in API607 5th

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.  

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