Standard
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AS 4618:2019
[Current]Gas appliance regulators
This Standard specifies minimum requirements for the safety, performance and use of gas appliance regulators.
Published: 14/05/2019
Pages: 36
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope, references, definitions and classifications
1.1 Scope
1.2 Normative references
1.3 Terms and definitions
1.4 Classifications
1.4.1 General
1.4.2 Type
1.4.3 Class
1.4.4 Grade
2 Design and construction
2.1 Materials
2.1.1 Continuity of satisfactory operation
2.1.2 Suitability of materials for conditions of use
2.1.3 Materials in contact with gas
2.1.4 Melting point of metallic materials
2.1.5 Copper-containing alloys
2.2 Construction
2.2.1 Continued safe operation
2.2.2 Castings and hot pressings
2.2.3 Sealing of porous castings or cracks
2.2.4 Assembled regulator cleanliness
2.2.5 Parts secure against accidental displacement
2.2.6 Prevention of accidental shift after calibration
2.2.7 Springs
2.2.8 Securing of parts together
2.2.9 Threaded connections with spanner flats
2.2.10 Threaded inlet connections
2.2.11 Sharp edges
2.2.12 Holes for assembly or mounting
2.2.13 Permanent sealing of non-functional holes
2.2.14 Self-tapping screws
2.3 Design
2.3.1 Accessibility for adjustment
2.3.2 Adjusting devices
2.3.3 Tightening of locking device
2.3.4 Design of adjustable regulator
2.3.5 Components requiring servicing
2.3.6 Venting
2.3.7 Pressure test points
2.3.8 Noise
2.4 Markings
2.4.1 General
2.4.2 Durability of markings
2.4.3 Interchangeable springs distinguishable
2.5 Instructions
3 Performance requirements
3.1 General
3.1.1 Satisfactory performance in all declared mounting positions
3.1.2 Satisfactory performance over declared temperature range
3.1.3 Commissioning and adjustment
3.2 External leakage
3.3 Operating characteristics
3.3.1 Maximum variation in outlet pressure
3.3.2 Lock-up regulators
3.4 Mechanical strength
3.4.1 Regulators capable of withstanding listed torque values
3.4.2 Regulators capable of withstanding listed bending moments
3.5 Durability
3.5.1 Cycling test
3.5.2 Operating characteristics before and after exposure to test gases
Appendix A
Appendix B
B.1 Test gases
B.1.1 Test medium
B.1.2 Test gases
B.2 Initial setting
B.3 Test sequence
B.4 Heat resistance
B.4.1 Scope
B.4.2 Principle
B.4.3 Apparatus
B.4.4 Procedure
B.4.5 Test report
B.5 Markings and labels
B.5.1 Scope
B.5.2 Principle
B.5.3 Apparatus
B.5.4 Materials
B.5.5 Procedure
B.5.6 Test report
B.6 External leakage
B.6.1 Scope
B.6.2 Principle
B.6.3 Apparatus
B.6.4 Materials
B.6.5 Preparation of apparatus
B.6.6 Procedure
B.6.7 Test report
B.7 Operating characteristics
B.7.1 Scope
B.7.2 Principle
B.7.3 Apparatus
B.7.4 Materials
B.7.5 Preparation of apparatus
B.7.6 Procedure
B.7.7 Test report
B.8 Lock-up pressure
B.8.1 Scope
B.8.2 Principle
B.8.3 Apparatus
B.8.4 Materials
B.8.5 Preparation of apparatus
B.8.6 Procedure
B.8.7 Test report
B.9 Torque
B.9.1 Scope
B.9.2 Principle
B.9.3 Apparatus
B.9.4 Materials
B.9.5 Preparation of apparatus
B.9.6 Procedure
B.9.7 Test report
B.10 Bending moment
B.10.1 Scope
B.10.2 Principle
B.10.3 Apparatus
B.10.4 Preparation of apparatus
B.10.5 Procedure
B.10.6 Test report
B.11 Durability
B.11.1 Scope
B.11.2 Method
B.11.3 Apparatus
B.11.4 Materials
B.11.5 Preparation of apparatus
B.11.6 Procedure for regulators with operating temperatures 0 °C and above
B.11.7 Procedure for regulators with declared operating temperature below 0 °C
B.11.8 Test report
B.12 Resistance to hydrocarbons
B.12.1 Scope
B.12.2 Principle
B.12.3 Apparatus
B.12.4 Materials
B.12.5 Preparation of apparatus
B.12.6 Procedure
B.12.7 Test report
Appendix C
Bibliography
Cited references in this standard
[Current]
Method for detecting the susceptibility of copper and its alloys to stress corrosion cracking using the mercurous nitrate test
[Current]
Pipe threads where pressure-tight joints are made on the threads, Part 1: Dimensions, tolerances and designation
[Current]
Gas installations, Part 2: LP Gas installations in caravans and boats for non-propulsive purposes
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