Header
About this publication
Preface
1 Scope and general
1.1 Scope and application
1.1.1 Scope
1.1.2 Application
1.2 Normative references
1.3 Terms and definitions
1.4 Instrumentation
1.5 Marking
2 Materials
2.1 General
2.2 Contamination of water
2.3 Corrosion-resistant metallic materials
2.4 Copper
2.5 Copper alloy
2.6 Dezincification-resistant (DR) copper alloy
2.7 Stainless steel
2.8 Diaphragm materials, and valve seats
2.9 Temperature-sensing probe
2.10 Other components
2.10.1 General
2.10.2 Plastics materials
2.10.2.1 General
2.10.2.2 UV resistance
3 General design and construction
3.1 General
3.2 Strength
3.2.1 Torque test
3.2.2 Leakage test
3.3 End connections
3.4 Components and valve seats
3.5 Remanufactured valves
3.5.1 General
3.5.2 Critical components
3.5.3 Remanufacturing process
3.5.3.1 General
3.5.3.2 Valve body
3.5.3.3 Valve seat
3.5.4 Packaging
3.6 Insulation of temperature/pressure-relief valves, temperature-relief valves, expansion control valves and combination high-pressure expansion non-return valves
3.7 Installation instructions
4 Temperature/pressure-relief valves
4.1 General
4.2 Inlet and drain connections and flow dimensions
4.2.1 Size of connections
4.2.2 Inlet and drain connections
4.2.2.1 Inlet connections
4.2.2.2 Drain connections
4.2.3 Provision for drainage
4.2.4 Total flow area
4.2.5 Width of passages
4.2.6 Minimum orifice
4.3 Valve seat and disc assemblies
4.4 Springs pressure-relief function
4.5 Testing
4.5.1 Selection of valves for type testing
4.5.2 Test schedule
4.5.3 Drain lines
4.6 Easing gear test
4.7 Auxiliary pressure-relief device
4.7.1 General
4.7.2 Rated capacity — Expansion-control function
4.7.3 Rated capacity — Temperature-relief function
4.8 Pressure-relief function
4.8.1 Set pressure
4.8.2 Preferred set pressures
4.8.3 Opening pressure test
4.8.4 Reseating pressure test
4.8.5 Rated capacity (expansion-relief) test
4.8.6 Endurance (pressure) test
4.9 Temperature-relief function
4.9.1 Set temperature
4.9.2 Opening temperature test
4.9.3 Reseating temperature test
4.9.4 Endurance (temperature-relief) test
4.9.5 Water discharge capacity (temperature-relief) test
4.9.6 Steam discharge capacity (temperature-relief) test
4.9.7 Reproducibility of thermal relief test
4.10 Marking
5 Expansion control valves
5.1 General
5.2 Connections and flow dimensions
5.2.1 Size of connections
5.2.2 Inlet and drain connections and flow dimensions
5.2.2.1 Inlet connections
5.2.2.2 Drain connection
5.2.3 Provision for drainage
5.2.4 Total flow area
5.2.5 Width of passages
5.2.6 Minimum orifice
5.3 Valve seat and disc assemblies
5.4 Springs
5.5 Testing
5.5.1 Selection of valve for type testing
5.5.2 Test schedule
5.6 Easing gear
5.7 Auxiliary pressure-relief device
5.7.1 General
5.7.2 Rated capacity — Expansion-control function
5.8 Expansion-control valve function
5.8.1 Preferred set pressures
5.8.2 Set pressure
5.8.3 Opening pressure test
5.8.4 Reseating pressure test
5.8.5 Endurance (pressure) test
5.8.6 Rated capacity test
5.9 Marking
6 Non-return valves
6.1 General
6.2 Inlet and outlet connections
6.2.1 General
6.2.2 Width of passages
6.3 Testing
6.3.1 Selection of valves
6.3.2 Test schedule
6.4 Flow rate and closing pressure
6.4.1 Flow rate test
6.4.2 Closing pressure test
6.5 Endurance test
6.6 Orientation
6.7 Marking
7 Temperature-relief valves
7.1 General
7.2 Inlet and drain connections and flow dimensions
7.2.1 Size of connections
7.2.2 Inlet and drain connections
7.2.2.1 Inlet connections
7.2.2.2 Drain connections
7.2.3 Provision for drainage
7.2.4 Total flow area
7.2.5 Width of passages
7.2.6 Minimum orifice
7.3 Valve seat and disc assemblies
7.4 Springs
7.5 Testing
7.5.1 Selection of valves for type testing
7.5.2 Test schedule
7.5.3 Drain lines
7.6 Easing gear test
7.7 Auxiliary pressure-relief device
7.7.1 General
7.7.2 Rated capacity temperature-relief function
7.8 Temperature-relief function
7.8.1 Set temperature
7.8.2 Opening temperature test
7.8.3 Reseating temperature test
7.8.4 Endurance (temperature-relief) test
7.8.5 Water discharge capacity (temperature-relief) test
7.8.6 Steam discharge capacity (temperature-relief) test
7.8.7 Reproducibility of thermal-relief test
7.9 Pressure setting
7.10 Marking
8 Combination high pressure expansion non-return valves (HPNR)
8.1 General
8.2 Connections and flow dimensions
8.2.1 Size of connections
8.2.2 Inlet and drain connections and flow dimensions
8.2.2.1 Inlet connections
8.2.2.2 Drain connection
8.2.3 Provision for drainage
8.2.4 Width of passages
8.2.5 Minimum orifice
8.3 Valve seat and disc assemblies
8.4 Springs
8.5 Testing
8.5.1 Selection of valve for type testing
8.5.2 Test schedule
8.6 Easing gear
8.7 Expansion control valve function
8.7.1 Preferred set pressure
8.7.2 Set pressure
8.7.3 Opening pressure test
8.7.4 Reseating pressure test
8.7.5 Endurance (pressure) test
8.7.6 Rated capacity test
8.7.7 Non-return closing pressure test
8.7.8 Non-return flow rate test
8.7.9 Non-return endurance test
8.8 Marking
9 Leak-protection devices
9.1 General
9.2 Design
9.2.1 Resetting mechanism
9.2.2 Manual trip
9.2.3 Activation mechanism
9.3 Performance requirements and test methods
9.3.1 Closing test
9.3.2 Endurance test
9.4 Marking
Appendix A
A.1 Scope
A.2 Relevance
A.3 Terms and definitions
A.4 Sampling and testing plan
A.5 Testing
A.5.1 Type testing
A.5.1.1 General
A.5.1.2 Remanufactured valves
A.5.2 Batch release testing
A.5.2.1 General
A.5.2.2 Remanufactured valves
A.5.3 Retesting
A.6 Sampling and frequency plans — Type tests and batch release tests
Appendix B
Appendix C
C.1 General
C.2 Flowmeter (for use with air or water)
C.3 Flowmeter (for use with water)
C.4 Pressure gauges (for use with water)
C.5 Temperature
C.5.1 Indicating device
C.5.2 Recording instrument
C.6 Stopwatch
C.7 Torque applicator
C.8 Steam flow meter
Appendix D
D.1 Scope
D.2 Sound pressure levels
D.2.1 General
D.2.2 Method
Appendix E
E.1 Scope
E.2 Principle
E.3 Apparatus
E.4 Procedure
E.5 Report
Appendix F
F.1 Scope
F.2 Principle
F.3 Apparatus
F.4 Procedure
F.5 Report
Appendix G
G.1 Scope
G.2 Principle
G.3 Apparatus
G.4 Procedure
G.5 Report
Appendix H
H.1 Scope
H.2 Principle
H.3 Apparatus
H.4 Procedure
H.5 Report
Appendix I
I.1 Scope
I.2 Principle
I.3 Apparatus
I.4 Procedure
I.5 Report
Appendix J
J.1 Scope
J.2 Principle
J.3 Apparatus
J.4 Procedure
J.5 Report
Appendix K
K.1 Scope
K.2 Principle
K.3 Apparatus
K.4 Procedure
K.5 Report
Appendix L
L.1 Scope
L.2 Principle
L.3 Apparatus
L.4 Procedure
L.5 Report
Appendix M
M.1 Scope
M.2 Principle
M.3 Apparatus
M.4 Procedure
M.5 Report
Appendix N
N.1 Scope
N.2 Principle
N.3 Apparatus
N.4 Procedure
N.5 Report
Appendix O
O.1 Scope
O.2 Principle
O.3 Apparatus
O.4 Procedure
O.5 Alternative procedure
O.6 Report
Appendix P
P.1 Scope
P.2 Principle
P.3 Apparatus
P.4 Procedure
P.5 Report
Appendix Q
Q.1 Scope
Q.2 Principle
Q.3 Apparatus
Q.4 Procedure
Q.5 Report
Appendix R
R.1 Scope
R.2 Principle
R.3 Apparatus
R.4 Procedure
R.5 Report
Appendix S
Appendix T
Appendix U
Appendix V
Appendix W
Appendix X
Appendix Y
Y.1 Scope
Y.2 Principle
Y.3 Apparatus
Y.4 Procedure
Y.5 Report
Appendix Z
Z.1 Scope
Z.2 Principle
Z.3 Apparatus
Z.4 Procedure
Z.5 Report
Bibliography
