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API SPEC 7NRV:2006+ADD1:2019
Superseded
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Specification for Drill String Non-return Valves, First Edition, Includes Addendum 1 (2019)
Available format(s)
Hardcopy , PDF
Superseded date
06-11-2020
Language(s)
English
Published date
01-12-2019
Publisher
This standard was formulated to provide the minimum acceptable requirements for Drill String Non-return Valve (NRV) equipment.
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