NORMSERVIS s.r.o.

API SPEC 7NRV-ed.1

Specification for Drill String Non-return Valves

NORMA vydána dne 1.7.2020

Anglicky -
Zabezpečené PDF (2066.20 CZK)
Anglicky -
Tištěné (2066.20 CZK)

The information about the standard:

Designation standards: API SPEC 7NRV-ed.1
Publication date standards: 1.7.2020
The number of pages: 26
Approximate weight : 78 g (0.17 lbs)
Country: American technical standard
Kategorie: Technické normy 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.