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API SPEC 7NRV-ed.1
Specification for Drill String Non-return Valves
Translate name
STANDARD published on 1.7.2020
The information about the standard:
Designation standards: API SPEC 7NRV-ed.1
Publication date standards: 1.7.2020
SKU: NS-1140450
The number of pages: 26
Approximate weight : 78 g (0.17 lbs)
Country: American technical standard
Category: Technical standards API
Annotation of standard text API SPEC 7NRV-ed.1 :
API SPEC 7NRV, 1st Edition, July 10, 2006 - Specification for Drill String Non-return Valves
This standard was formulated to provide the minimum acceptable requirements for Drill String Non-return Valve (NRV) equipment. It covers Drill String Non-return Valves, Non-return Valve Subs, Non-return Valve landing nipples, Non-return Valve Equalizing Heads and all components that establish tolerances and/or clearances which may affect performance or interchangeability of the NRV equipment. Non-return Valve Subs, Non-return Valve landing nipples, Non-return Valve Equalizing Heads and NRVs manufactured by different facilities or manufacturers may be supplied as separate items.
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