API 7NRV : 2006

Superseded

View Superseded by

SPECIFICATION FOR DRILL STRING NON-RETURN VALVES

Amended by

API 7NRV : 2006/ADD 1:2019

Available format(s)

Hardcopy , PDF

Superseded date

14-01-2020

Language(s)

English

Published date

01-01-2012

Publisher

American Petroleum Institute

1 SCOPE
2 NORMATIVE REFERENCES
3 TERMS AND DEFINITIONS
4 REQUIREMENTS
  4.1 General
  4.2 Design requirements
  4.3 Functional considerations
  4.4 Design considerations
  4.5 Verification test
5 MATERIALS
  5.1 General
  5.2 Metals
  5.3 Non-metals
  5.4 Traceability
6 QUALITY CONTROL REQUIREMENTS
  6.1 General
  6.2 Documentation retention
  6.3 Personnel qualifications
  6.4 Calibration systems
  6.5 Inspection of elastomeric materials
  6.6 Dimensional inspection
  6.7 Thread inspection
  6.8 Welding and brazing
  6.9 Qualification of heat treatment equipment
  6.10 Coatings, overlays, and surface treatments
  6.11 Mechanical and physical properties (where required by this
       Standard)
  6.12 NDE requirements
7 TESTING
  7.1 General
  7.2 Verification testing
  7.3 General requirements for an NRV verification test facility
  7.4 NRV verification test procedure
  7.5 NRV Nitrogen Pressure Test
  7.6 NRV Hydro Pressure Test
  7.7 NRV Cycle Test
  7.8 NRV Erosion Test
  7.9 RV Float Sub and NRV Landing Nipple testing
  7.10 NRV Equalizing Head testing
  7.11 Verification test for seal materials
  7.12 Production Testing
8 IDENTIFICATION, DOCUMENTATION AND PREPARATION FOR
  TRANSPORT
  8.1 Identification
  8.2 Documentation
  8.3 Preparation for transport
APPENDIX A MINIMUM TEST DATA
APPENDIX B API MONOGRAM

Provides the minimum acceptable requirements for Drill String Non-return Valve (NRV) equipment.

DevelopmentNote	Also available in Chinese edition, API 7NRV CHINESE. (01/2014) NEW CHILD ADD 1 2019 IS NOW ADDED
DocumentType	Standard
Pages	32
ProductNote	Reconfirmed 2006 NEW CHILD ADD 1 2019 IS NOW ADDED
PublisherName	American Petroleum Institute
Status	Superseded
SupersededBy	API 7NRV : 2006 : R2012

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