AS 4032.2-2002

1 - AS 4032.2:2002 WATER SUPPLY - VALVES FOR THE CONTROL OF HOT WATER SUPPLY TEMPERATURES - TEMPERING VALVES AND END-OF-LINE ...
4 - PREFACE
5 - CONTENTS
7 - FOREWORD
8 - SECTION 1 - SCOPE AND GENERAL
8 - 1.1 SCOPE
8 - 1.2 REFERENCED DOCUMENTS
9 - 1.3 DEFINITIONS
9 - 1.3.1 Distortion
9 - 1.3.2 Manufacturer’s recommended commissioning temperature
9 - 1.3.3 Steady mixed water discharge temperature
9 - 1.3.4 Transient mixed water discharge temperatures
9 - 1.4 INSTRUMENTATION
9 - 1.5 TOLERANCES
9 - 1.6 MARKING
11 - SECTION 2 - MATERIALS
11 - 2.1 GENERAL
11 - 2.2 COPPER ALLOY MATERIALS
11 - 2.3 DIAPHRAGM MATERIALS AND VALVE SEATS
11 - 2.4 SPRING MATERIALS
11 - 2.5 CONTAMINATION OF WATER
12 - SECTION 3 - DESIGN AND CONSTRUCTION
12 - 3.1 GENERAL
12 - 3.2 STRENGTH
12 - 3.2.1 Torque test
12 - 3.2.2 Leakage
12 - 3.3 END CONNECTIONS
12 - 3.4 COMPONENTS AND VALVE SEATS
12 - 3.5 REPAIR
12 - 3.6 INSTRUCTIONS
13 - SECTION 4 - TEMPERING VALVE
13 - 4.1 GENERAL
13 - 4.2 INLET AND OUTLET CONNECTIONS
13 - 4.3 DESIGN REQUIREMENTS
13 - 4.4 TEMPERATURE STABILITY OF MIXED WATER
14 - 4.5 SEQUENCE OF TESTS
15 - 4.6 ENDURANCE OF THERMOSTATIC ELEMENT AND OPERATING MECHANISM
15 - 4.7 MARKING
15 - 4.8 MANUFACTURER’S INSTRUCTIONS
16 - SECTION 5 - END-OF-LINE TEMPERATURE-ACTUATED FLOW DEVICES
16 - 5.1 GENERAL
16 - 5.2 CONNECTIONS
16 - 5.3 ACTUATING TEMPERATURE
16 - 5.4 PERFORMANCE
16 - 5.4.1 Flow rate
16 - 5.4.2 Response
16 - 5.5 ENDURANCE
16 - 5.6 MARKING
17 - 5.7 MANUFACTURER’S INSTRUCTIONS
18 - APPENDIX A - INSTRUMENTATION
18 - A2 GENERAL
18 - A3 FLOWMETER (for use with air)
18 - A4 FLOWMETER (for use with water)
18 - A5 PRESSURE GAUGES (for use with water)
18 - A6 TEMPERATURE-INDICATING AND RECORDING DEVICES
18 - A7 STOPWATCH
18 - A8 TORQUE APPLICATOR
19 - APPENDIX B - TORQUE TEST
19 - B1 SCOPE
19 - B2 PRINCIPLE
19 - B3 APPARATUS
19 - B4 PROCEDURE
20 - B5 TEST REPORT
21 - APPENDIX C - LEAKAGE TEST
21 - C1 SCOPE
21 - C2 PRINCIPLE
21 - C3 APPARATUS
21 - C4 PROCEDURE
21 - C5 REPORT
22 - APPENDIX D - INFORMATION ON SCALDS FROM HOT WATER
23 - APPENDIX E - TEMPERATURE STABILITY OF MIXED WATER TEST - TEMPERING VALVES
23 - E1 SCOPE
23 - E2 PRINCIPLE
23 - E3 APPARATUS
24 - E4 PRESSURE DROP, TEMPERATURE VARIATION AND OUTLET FLOW VARIATION PROCEDURE
25 - E5 THERMAL SHUT-OFF
26 - E6 MIXED WATER TEMPERATURE OVERSHOOT ON STARTING FROM AMBIENT
27 - E7 REPORT
33 - APPENDIX F - ENDURANCE TEST - TEMPERING VALVES
33 - F1 SCOPE
33 - F2 PRINCIPLE
33 - F3 APPARATUS
33 - F4 PROCEDURE
34 - F5 REPORT
35 - APPENDIX G - PERFORMANCE AND ENDURANCE TESTS - END-OF-LINE TEMPERATURE-ACTUATED FLOW DEVICES
35 - G1 SCOPE
35 - G2 PRINCIPLE
35 - G3 APPARATUS
36 - G4 PROCEDURE (see Figure G1)
37 - G5 REPORT

Specifies requirements for the design, construction, testing and performance of tempering valves of nominal sizes not larger than DN 32 and end-of-line temperature-actuated devices of nominal size DN 15, for use with hot water at a supply temperature not exceeding 99 degrees Celsius, and hot and cold water with continuous working pressures not exceeding 1400 kPa.

This Standard specifies requirements for the design, construction, testing and performanceof(a) tempering valves of nominal sizes not larger than DN 32; and(b) end-of-line temperature-actuated devices of nominal size DN 15, for use with hot water at(i) continuous operating temperature not exceeding 85C;(ii) temperature under emergency conditions, not exceeding 99C; and(iii) continuous working pressure not exceeding 1400 kPa.The major requirement of the testing procedures is that the device under test does not permit the continuous discharge of water from the outlet in excess of 50C.Discharges of water with a temperature in excess of this figure, which comply with the specified cumulative time/temperature factors, are acceptable.

First published as AS 4032.3-2002.