API 607 Rev5
API 607 Rev5
(OP)
Can anyone tell me how Rev 5 differs from Rev 4?
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RE: API 607 Rev5
RE: API 607 Rev5
about the same issue, please take also a look at thread408-163494, thread408-163274 and/or thread408-114236 within this Forum.
In addition to the information by JLSeagull, the main practical difference is that in certain cases [see ISO 10497:2004, clause 5.6.4-b)], the maximum test pressure from 30 psig = 2 barg is increased up to the 75% of the valve ambient temperature rated pressure.
This results in a more complicated test rig (which requires a closed loop) and, most of all, in more delicate safety issues (some national laws may require special systems and permissions from authorities such as Fire Brigades, etc...).
Personally I'm not aware of any "famous" valve Manufacturers or testing Laboratories that have performed fire tests according to the standard edition in object, and even searching the web I found little interesting results (regarding small manual ball valves only).
See, for example:
- http://www.johnvalve.com.tw/api.htm
- http://ww
- http://www
Hope this helps, 'NGL