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API Spec 7NRV (R2012)

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API Spec 7NRV (R2012) Specification for Drill String Non-return Valves, First Edition

standard by American Petroleum Institute, 07/01/2006

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Full Description

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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Edition: 1st Published: 07/01/2006 Number of Pages: 19File Size: 1 file , 340 KB Product Code(s): G7NRV01, G7NRV01C, G7NRV01C, G7NRV01, G7NRV01C, G7NRV01 Note: This product is unavailable in Cuba, Iran, North Korea, Syria