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AS 4619-2004
[Current]Gas appliance thermostats
Specifies the uniform minimum requirements for manufacturers, designers, regulatory authorities, testing laboratories and similar organizations for the safety, performance and use of gas appliance thermostats up to 50 mm size. These gas appliance thermostats are intended for use with natural gas, town gas, tempered liquefied petroleum gas and liquefied petroleum gas.
Published: 01/01/2004
Pages: 33
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
1 Scope classification and definitions
1.1 Scope
1.2 Classification
1.2.1 Mode
1.2.2 Sensor
1.3 Definitions
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 materials
2.1.5 Copper containing alloys
2.1.6 Component parts materials selected to appropriate Standards
2.2 Construction
2.2.1 Continuity of satisfactory operation
2.2.2 Castings and hot pressings
2.2.3 Sealing of porous castings or cracks
2.2.4 Assembled valves to be clean
2.2.5 Accidental displacement of parts
2.2.6 Factory calibration means sealed
2.2.7 Attachment of knobs, handles, dials and pointers
2.2.8 Springs
2.2.9 Securing of parts together
2.2.10 Sharp edges
2.2.11 Means of limiting the travel of manual valves
2.2.12 Holes for assembly or mounting
2.2.13 Permanent sealing of non-functional holes
2.2.14 Self-tapping screws
2.2.15 Construction of parts not covered by this Standard
2.2.16 Tightening of a gland or any other adjustments
2.3 Design
2.3.1 Safety device cannot be overridden
2.3.2 Accessibility of integral parts
2.3.3 Adjusting devices
2.3.4 Locking device
2.3.5 Components requiring servicing
2.3.6 Special tools not required for servicing or replacement
2.3.7 Knobs and movable dials
2.3.8 Valves
2.3.9 Connections
2.3.10 Pressure test points
2.3.11 Thermostats
2.3.12 Location or enclosure of electrical parts
2.3.13 Separation of operating parts from stowed wiring
2.4 Markings
2.4.1 General
2.4.2 Marking of electrical connections
2.4.3 Markings of control knobs
2.4.4 Durability of markings
2.5 Instructions
2.5.1 General
3 Performance requirements
3.1 General
3.1.1 Satisfactory performance in all mounting positions
3.1.2 Satisfactory performance over declared temperature range
3.1.3 Thermostats—‘Fail safe’ type
3.1.4 Effort to open fully, close or reset valve
3.1.5 Torque or force to open or close valve
3.2 Gas leakage
3.2.1 External leakage
3.2.2 Internal leakage
3.2.3 Liquid immersion thermostat leakage
3.3 Flow rate
3.3.1 Flow rate for a given pressure
3.3.2 Maximum bypass rate
3.4 Mechanical strength
3.4.1 Device capable of withstanding listed torque values
3.4.2 Device capable of withstanding listed bending moments
3.5 Operating characteristics
3.5.1 Maximum and minimum operating temperatures
3.5.2 Operating temperature tolerances
3.5.3 Thermostat tolerance after durability testing
3.6 Other functions
3.6.1 Compliance with other Standards
3.7 Durability
3.7.1 Cycling test—Liquid immersion thermostats
3.7.2 Cycling test—Gaseous immersion and surface contact thermostats
3.7.3 Heat resistance
Appendix A
Appendix B
B.1 Test medium and gases
B.1.1 Testing medium
B.1.2 Test gases
B.2 Samples
B.3 Lubricants
B.4 M.O.T. 2.1.4 – 85 Heat resistance
B.4.1 Scope
B.4.2 Method
B.4.3 Apparatus
B.4.4 Procedure
B.4.5 Results
B.5 M.O.T. 2.4.4 – 95 Markings and labels
B.5.1 Scope
B.5.2 Method
B.5.3 Apparatus
B.5.4 Materials
B.5.5 Procedure
B.5.6 Result
B.6 M.O.T. 3.2.1 – 02 External leakage
B.6.1 Scope
B.6.2 Method
B.6.3 Apparatus
B.6.4 Materials
B.6.5 Preparation of apparatus
B.6.6 Procedure
B.6.7 Result
B.7 M.O.T. 3.2.2 – 02 Internal leakage
B.7.1 Scope
B.7.2 Method
B.7.3 Apparatus
B.7.4 Materials
B.7.5 Preparation for test
B.7.6 Procedure
B.7.7 Result
B.8 M.O.T. 3.2.3 – 85 Liquid immersion thermostat—Liquid leakage
B.8.1 Scope
B.8.2 Method
B.8.3 Apparatus
B.8.4 Materials
B.8.5 Preparation of apparatus
B.8.6 Procedure
B.8.7 Result
B.9 M.O.T. 3.3.1 – 85 Flow rate
B.9.1 Scope
B.9.2 Method
B.9.3 Apparatus
B.9.4 Materials
B.9.5 Preparation of apparatus
B.9.6 Procedure
B.9.7 Calculations and reporting
B.9.8 Result
B.10 M.O.T. 3.3.2 – 95 Bypass flow rate
B.10.1 Scope
B.10.2 Method
B.10.3 Apparatus
B.10.4 Materials
B.10.5 Preparation of apparatus
B.10.6 Procedure
B.10.7 Result
B.11 M.O.T. 3.4.1 – 85 Torque test
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
B.11.7 Result
B.12 M.O.T. 3.4.2 – 85 Bending moment test
B.12.1 Scope
B.12.2 Method
B.12.3 Apparatus
B.12.4 Preparation of apparatus
B.12.5 Procedure
B.12.6 Result
B.13 M.O.T. 3.5.1 – 95 Maximum and minimum set points
B.13.1 Scope
B.13.2 Method
B.13.3 Apparatus
B.13.4 Materials
B.13.5 Preparation
B.13.6 Procedure
B.13.7 Result
B.14 M.O.T. 3.5.2 – 95 Calibration point check after setting the thermostat
B.14.1 Scope
B.14.2 Method
B.14.3 Apparatus
B.14.4 Materials
B.14.5 Preparation of apparatus
B.14.6 Procedure
B.14.7 Result
B.15 M.O.T. 3.5.3 – 95 Calibration point check before and after durability test
B.15.1 Scope
B.15.2 Method
B.15.3 Apparatus
B.15.4 Materials
B.15.5 Preparation of apparatus
B.15.6 Procedure
B.15.7 Result
B.16 M.O.T. 3.7.1/3.7.2 – 01 Durability
B.16.1 Scope
B.16.2 Method
B.16.3 Materials
B.16.4 Apparatus
B.16.5 Procedure
B.16.6 Results
B.17 M.O.T. 3.7.3 – 85 Resistance to over-temperature
B.17.1 Scope
B.17.2 Method
B.17.3 Apparatus
B.17.4 Procedure
B.17.5 Result
Appendix C
Appendix D
Amendment control sheet
AS 4619-2004
Amendment No. 1 (2016)
Revised text
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
Content history
[Current]
[Superseded]
AG 203-1998
AS 4619-2004 REC:2021
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