AS 4032-1998

1 - AS 4032-1998 THERMOSTATIC MIXING VALVES-MATERIALS, DESIGN AND PERFORMANCE REQUIREMENTS
4 - PREFACE
5 - CONTENTS
7 - FOREWORD
8 - SECTION 1 SCOPE AND GENERAL
8 - 1.1 SCOPE
8 - 1.2 APPLICATION
8 - 1.3 REFERENCED DOCUMENTS
8 - 1.4 DEFINITIONS
8 - 1.4.1 Cyclic actuator
8 - 1.4.2 Dynamic pressure ratio
8 - 1.4.3 Temperature control
8 - 1.4.4 Thermal shutoff
9 - 1.4.5 Thermostatic mixing valve
9 - 1.4.6 Unequal dynamic pressures
9 - 1.4.7 Water volume control
9 - 1.5 DESIGNATION
9 - 1.6 INSTRUCTIONS
9 - 1.7 PRODUCT DATA
9 - 1.8 MARKING
10 - SECTION 2 MATERIALS
10 - 2.1 SCOPE OF SECTION
10 - 2.2 COPPER ALLOY
10 - 2.3 CONTAMINATION OF WATER
11 - SECTION 3 DESIGN AND CONSTRUCTION
11 - 3.1 GENERAL
11 - 3.2 END CONNECTORS
11 - 3.3 LIMITATION OF TEMPERATURE ADJUSTMENT
11 - 3.4 CROSS-FLOW PREVENTION DEVICES
11 - 3.5 ISOLATING VALVES
12 - SECTION 4 PERFORMANCE REQUIREMENTS
12 - 4.1 GENERAL
12 - 4.2 TORQUE TESTS
12 - 4.3 WATERTIGHTNESS AT AMBIENT TEMPERATURE
12 - 4.4 ENDURANCE OF THERMOSTATIC ELEMENT AND OPERATING MECHANISM INCLUDING THERMAL SHUT-OFF
12 - 4.5 SENSITIVITY OF TEMPERATURE CONTROL
12 - 4.6 TEMPERATURE STABILITY OF MIXED WATER
13 - 4.7 WATERTIGHTNESS AT OPERATING TEMPERATURE
13 - 4.8 FINAL TESTS
14 - SECTION 5 PERFORMANCE TESTS
14 - 5.1 SEQUENCE
14 - 5.2 PARAMETERS
14 - 5.3 APPARATUS
14 - 5.4 THERMOSTATIC ELEMENT/SENSOR AND OPERATING MECHANISM
14 - 5.5 ISOLATION VALVES, CROSS-FLOW PREVENTION DEVICES AND CONTROL VALVES
18 - APPENDIX A - LIST OF REFERENCED DOCUMENTS
19 - APPENDIX B - COMMISSIONING, MAINTENANCE AND INSTALLATION INSTRUCTIONS
19 - B1 INSTALLATION INSTRUCTIONS
19 - B2 COMMISSIONING INSTRUCTIONS
20 - B3 MAINTENANCE INSTRUCTIONS
21 - APPENDIX C - MEASUREMENT OF NOISE EMISSION
21 - C1 SCOPE
21 - C2 SOUND PRESSURE LEVELS
21 - C2.1 General
21 - C2.2 Method
22 - APPENDIX D - WATER VOLUME CONTROL TORQUE TEST
22 - D1 SCOPE
22 - D2 PRINCIPLE
22 - D3 APPARATUS
22 - D4 PROCEDURE
23 - D5 REPORT
24 - APPENDIX E - TEMPERATURE STOP/OVERRIDE CONTROL TORQUE TEST
24 - E1 SCOPE
24 - E2 PRINCIPLE
24 - E3 APPARATUS
24 - E4 PROCEDURE
24 - E5 REPORT
25 - APPENDIX F - WATER TIGHTNESS TEST
25 - F1 SCOPE
25 - F2 PRINCIPLE
25 - F3 APPARATUS
25 - F4 PROCEDURE
25 - F4.1 General
25 - F4.2 Ambient temperature hydrostatic test
26 - F4.3 Operating temperature hydrostatic test
26 - F5 REPORT
27 - APPENDIX G - ENDURANCE TESTING OF THERMOSTATIC ELEMENT/SENSOR AND OPERATING MECHANISM TEST
27 - G1 SCOPE
27 - G2 PRINCIPLE
27 - G3 APPARATUS
27 - G4 PROCEDURE
29 - G5 REPORT
30 - APPENDIX H - SENSITIVITY OF TEMPERATURE CONTROL TEST
30 - H1 SCOPE
30 - H2 PRINCIPLE
30 - H3 APPARATUS
30 - H4 PROCEDURE
31 - H5 REPORT
32 - APPENDIX I - TEMPERATURE STABILITY OF MIXED WATER TEST
32 - I1 SCOPE
32 - I2 PRINCIPLE
32 - I3 APPARATUS
32 - I4 PROCEDURE
32 - I4.1 General
33 - I4.2 Pressure drop test
33 - I4.3 Temperature variation test
34 - I5 REPORT
37 - APPENDIX J - APPARATUS FOR TEST RIGS
37 - J1 SCOPE
37 - J2 WATER SUPPLY
37 - J3 FLOW MEASURING DEVICES
37 - J4 PRESSURE MEASURING DEVICES
37 - J5 TEMPERATURE MEASURING DEVICES
37 - J6 RECORDING EQUIPMENT
37 - J7 TORQUE APPLICATOR
37 - J8 PROTRACTOR
37 - J9 MEASURING CONTAINER
38 - APPENDIX K - PIPEWORK FOR TEST RIGS
38 - K1 SCOPE
38 - K2 PIPEWORK DIMENSIONS
38 - K3 THERMAL INSULATION
38 - K4 PRESSURE TAKE-OFFTEES
38 - K5 TEMPERATURE TAKE-OFF POINTS
38 - K6 INLET ADAPTORS AND CONNECTORS
38 - K7 OUTLET ADAPTOR
39 - APPENDIX L - TYPICAL TEST RIG FOR PERFORMANCE TESTS

Specifies requirements for the design, construction, testing and performance of thermostatic mixing valves of nominal sizes not larger than DN 32, for use with hot water at a supply temperature not exceeding 90 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 performance of thermostatic mixing valves of nominal sizes not larger than DN 32, for use with hot water at a supply temperature not exceeding 90C, and hot and cold water with continuous working pressures not exceeding 1400 kPa. The principal element of the testing procedures is that the thermostatic mixing valve under test does not permit the discharge of water from the outlet with a temperature more than 2C in excess of the nominated discharge temperature. Discharges of water with a temperature in excess of this but which comply with the cumulative time/temperature factors given in Table 4.1 are acceptable.NOTE: Manufacturers may negotiate with the certifying body on hot water supply temperatures up to 99C, or hot and cold water continuous working pressures greater than 1400 kPa or both, if considered desirable, to assess temperature stability of the mixed water (see Clauses 1.7 and 5.2).

Under Revision see DR 01022 CP