Definition(s)
NRV
Nonreturn valve.
Source:API SPECIFICATION 19TT, Specification for Downhole Well Test Tools and Related Equipment, First Edition, October 2016. Global Standards
NRV
A non-return valve. A float or other check valve in the system. See Inside BOP.
Source: IADC UBO / MPD Glossary, December 2011. Global Standards
NRV
Non-return valve.
Source: NORSOK D-010, Well integrity in drilling and well operations, Rev. 3, August 2004. Global Standards