AS 4032.1-2005

Water supply - Valves for the control of heated water supply temperatures Thermostatic mixing valves - Materials design and performance requirements

Standards Australia

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1 - AS 4032.1-2005 WATER SUPPLY-VALVES FOR THE CONTROL OF HEATED WATER SUPPLY TEMPERATURES - THERMOSTATIC MIXING VALVES-...
4 - PREFACE
5 - CONTENTS
7 - SECTION 1 SCOPE AND GENERAL
7 - 1.1 SCOPE
7 - 1.2 APPLICATION
7 - 1.3 REFERENCED DOCUMENTS
7 - 1.4 DEFINITIONS
8 - 1.4.1 Cyclic actuator
8 - 1.4.2 Dynamic pressure ratio.
8 - 1.4.3 Special tools
8 - 1.4.4 Temperature control
8 - 1.4.5 Thermal shut-off (sudden failure of the cold or hot water supply)
8 - 1.4.6 Thermostatic mixing valve (TMV)
8 - 1.4.7 Water volume control
8 - 1.5 DESIGNATION
8 - 1.6 PRODUCT DATA
9 - 1.7 MARKING
10 - 1.8 INSTRUCTIONS
11 - SECTION 2 MATERIALS
11 - 2.1 SCOPE OF SECTION
11 - 2.2 CORROSION-RESISTANT METALLIC MATERIALS
11 - 2.3 COPPER
11 - 2.4 COPPER ALLOY
11 - 2.5 DEZINCIFICATION-RESISTANT (DR) COPPER ALLOY
11 - 2.6 STAINLESS STEEL
12 - 2.7 PLASTICS MATERIALS
12 - 2.7.1 General
12 - 2.7.2 Acetal
12 - 2.7.3 UV Resistance
12 - 2.8 OTHER COMPONENT MATERIALS
13 - SECTION 3 DESIGN AND MANUFACTURE
13 - 3.1 GENERAL
13 - 3.2 END CONNECTORS
13 - 3.3 LIMITATION OF TEMPERATURE ADJUSTMENT
13 - 3.4 ELECTRONIC VALVES
13 - 3.4.1 Electrical safety
13 - 3.4.2 Electromagnetic compatibility
13 - 3.5 CROSS-FLOW PREVENTION DEVICES AND STRAINERS
14 - 3.6 ISOLATING VALVES
14 - 3.7 TMV WITH INTEGRAL OUTLET TAPS
15 - SECTION 4 PERFORMANCE REQUIREMENTS
15 - 4.1 GENERAL
15 - 4.2 PRODUCTS IN CONTACT WITH DRINKING WATER
15 - 4.3 TORQUE TESTS
15 - 4.4 WATERTIGHTNESS AT AMBIENT TEMPERATURE
15 - 4.5 THERMAL SHUT-OFF
15 - 4.5.1 General
15 - 4.5.2 Cold water isolation
15 - 4.5.3 Hot water isolation
16 - 4.5.4 Electronic valves-Power failure
16 - 4.6 SENSITIVITY OF TEMPERATURE ADJUSTMENT
16 - 4.7 MIXED WATER TEMPERATURE OVERSHOOT ON STARTING FROM AMBIENT
16 - 4.8 TEMPERATURE STABILITY OF MIXED WATER
17 - 4.9 WATERTIGHTNESS AT OPERATING TEMPERATURE
17 - 4.10 ENDURANCE OF CONTROL SYSTEM AND OPERATING MECHANISM
17 - 4.11 SEQUENCE
19 - APPENDIX A - MEANS FOR DEMONSTRATING COMPLIANCE WITH THIS STANDARD
19 - A1 SCOPE
19 - A2 PRODUCT CERTIFICATION
19 - A3 TESTING
19 - A3.1 General
19 - A3.2 Inspection and test schedule
19 - A3.3 Re-testing
20 - A3.4 Rejection after retest
20 - A3.5 Thermostatic element/sensor and operating mechanism
20 - A3.6 Isolating valves, cross-flow prevention devices and control valves
20 - A3.7 Type testing
21 - A4 Batch testing
23 - APPENDIX B - LIST OF REFERENCED DOCUMENTS
25 - APPENDIX C - INSTALLATION, COMMISSIONING, FIELD TESING AND MAINTENANCE INSTRUCTIONS
25 - C1 INSTRUCTIONS
25 - C2 INSTALLATION INSTRUCTIONS
26 - C3 COMMISSIONING INSTRUCTIONS
26 - C4 FIELD TESTING
26 - C5 MAINTENANCE INSTRUCTIONS
27 - APPENDIX D - TEMPERATURE STOP/OVERRIDE CONTROL TORQUE TEST
27 - D1 SCOPE
27 - D2 PRINCIPLE
27 - D3 APPARATUS
27 - D4 PROCEDURE
28 - D5 REPORT
29 - APPENDIX E - WATERTIGHTNESS TEST
29 - E1 SCOPE
29 - E2 PRINCIPLE
29 - E3 APPARATUS
29 - E4 PROCEDURE
29 - E4.1 General
29 - E4.2 Ambient temperature hydrostatic test
30 - E4.3 Operating temperature hydrostatic test
30 - E5 REPORT
32 - APPENDIX F - THERMAL SHUT-OFF TEST FOR COLD WATER AND HOT WATER ISOLATION
32 - F1 SCOPE
32 - F2 PRINCIPLE
32 - F3 APPARATUS
32 - F4 PROCEDURE
32 - F4.1 Test conditions
33 - F4.2 Test set-up
33 - F4.3 Cold water isolation test
33 - F4.4 Hot water isolation test
34 - F4.5 Power failure test (electronic valves)
34 - F5 Report
38 - APPENDIX G - SENSITIVITY OF TEMPERATURE ADJUSTMENT TEST
38 - G1 SCOPE
38 - G2 PRINCIPLE
38 - G3 APPARATUS
38 - G4 PROCEDURE
39 - G5 REPORT
40 - APPENDIX H - MIXED WATER TEMPERATURE OVERSHOOTING ON STARTING FROM AMBIENT
40 - H1 SCOPE
40 - H2 PRINCIPLE
40 - H3 APPARATUS
40 - H4 PROCEDURE
40 - H4.1 Test conditions
41 - H4.2 Test
41 - H5 Report
45 - APPENDIX I - TEMPERATURE STABILITY OF MIXED WATER TEST
45 - I1 SCOPE
45 - I2 PRINCIPLE
45 - I3 APPARATUS
45 - I4 PROCEDURE
45 - I4.1 General
46 - I4.2 Test
46 - I4.3 Pressure drop test (concurrent with Paragraph I4.2 and Figure I1)
46 - I4.4 Temperature variation test (concurrent with Paragraph I4.2 and Table I2)
47 - I4.5 Alternate temperature settings.
47 - I5 REPORT
50 - APPENDIX J - ENDURANCE TESTING OF THERMOSTATIC ELEMENT/SENSOR AND OPERATING MECHANISM TEST
50 - J1 SCOPE
50 - J2 PRINCIPLE
50 - J3 APPARATUS
50 - J4 PROCEDURE
52 - J5 REPORT
53 - APPENDIX K - APPARATUS FOR TEST RIGS
53 - K1 SCOPE
53 - K2 WATER SUPPLY
53 - K3 FLOW-MEASURING DEVICES
53 - K4 PRESSURE-MEASURING DEVICES
53 - K5 TEMPERATURE-MEASURING AND RECORDING DEVICES
53 - K6 TORQUE APPLICATOR
53 - K7 PROTRACTOR
54 - K8 MEASURING CONTAINER
55 - APPENDIX L - PIPEWORK FOR TEST RIGS
55 - L1 SCOPE
55 - L2 PIPEWORK DIMENSIONS
55 - L3 THERMAL INSULATION
55 - L4 PRESSURE TAKE-OFF TEES
55 - L5 TEMPERATURE TAKE-OFF POINTS
55 - L6 INLET ADAPTORS AND CONNECTORS
55 - L7 OUTLET ADAPTOR
56 - APPENDIX M - TYPICAL TEST RIG FOR PERFORMANCE TESTS

Abstract

Specifies requirements for the design, construction, testing performance and means of compliance for metallic-bodied thermostatic mixing valves.

Scope

This Standard specifies requirements for the design, construction, testing performance and means of compliance for metallic-bodied thermostatic mixing valves
of nominal sizes not larger than DN50;
for use with hot water at a supply temperature not exceeding 90C; and
for use with hot and cold water with working pressures not exceeding 1400kPa.
When used for ablutionary purposes, thermostatic mixing valves complying with this Standard provide the user with reasonable protection against scalding or excessive temperature fluctuations due to variations of pressures and temperatures of the hot and cold water supplies, including shut-off of either the cold or hot water supply.

Diagrams in this Standard are typical and chosen without prejudice.
Thermostatic mixing valves require routine maintenance and performance testing in accordance with AS4032.3.