EEMUA 172 : 95 AMD 1 96

Foreword
      Use of language
      Units
1 Scope
2 References
2.1 British standards
2.2 American petroleum institute standards
2.3 American national standards: American society of
      mechanical engineers
2.4 International organization for standardization
3 Definitions
3.1 Bi-directional valve
3.2 Double block valve
3.3 Double sealing valve
3.4 Downstream sealing valve
3.5 Hard seated valve
3.6 Sealant injection
3.7 Soft seated valve
3.8 Valve rated pressure (VRP)
3.9 Purchaser
3.10 Purchaser's inspector
4 Test equipment and facilities
4.1 General
4.2 Test fluid
4.3 Test reporting
5 Test requirements
5.1 Witnessing of tests
5.2 Valve draining
5.3 Removal and/or refitting of parts
5.4 Test temperature and pressure
5.5 Mandatory tests
5.6 Additional tests
5.7 Information to be provided by the purchaser
6 Test sequence
7 Shell tests
7.1 Purpose
7.2 Hydrostatic shell test procedure
7.3 Low pressure air shell test procedure
7.4 Acceptance criteria
8 Body cavity relief test
8.1 Purpose
8.2 Frequency of testing
8.3 General
8.4 Procedure for valve with internal cavity relief
8.4.1 Fixed gate designs
8.4.2 Floating gate designs
8.5 Procedure for valve with external cavity relief
8.6 Acceptance criteria
9 Seat tests
9.1 Purpose
9.2 General
9.3 High pressure hydrostatic seat tests
9.3.1 Procedure for double sealing valve with a body cavity vent
9.3.2 Procedure for double sealing valve without a body cavity
      vent
9.3.3 Procedure for downstream sealing valve
9.4 Low pressure air seat tests at 5.5 bar and 1 bar
9.4.1 General
9.4.2 Procedure for doubling sealing valve with a body cavity
      vent
9.4.3 Procedure for double sealing valve without a body cavity
      vent
9.4.4 Procedure for downstream sealing valve
9.5 Acceptance criteria for seat tests
10 Back seat test
10.1 Purpose
10.2 General
10.3 Procedure
10.4 Acceptance criteria
11 Operational test
11.1 Purpose
11.2 Frequency of testing
11.3 Procedure
11.4 Acceptance criteria
12 Anti-static test
12.1 Purpose
12.2 Frequency of testing
12.3 Procedure
12.4 Acceptance criteria
Tables
Appendix A: Gate valve test report
Appendix B: Information to be supplied by the purchaser
EEMUA Publications - summary list

Sets out the production test requirements to be applied to each valve unless otherwise specified by the purchaser. It is applicable to flanged, butt weld, socket weld, extended weld and threaded end steel gate valves of all types, with soft or hard seats, from Class 150 (PN 20) to Class 2500 (PN 420) rating and nominal bore sizes from 1/4 inch (DN 8) to 36 inch (DN 900), or larger at the discretion of the purchaser.