API 7NRV : 2006
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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SPECIFICATION FOR DRILL STRING NON-RETURN VALVES
English
10-07-2006
01-06-2024
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 |
Withdrawn
|
| SupersededBy |
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