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1、AS 4032.12005 Australian Standard Water supplyValves for the control of heated water supply temperatures Part 1: Thermostatic mixing valves Materials design and performance requirements AS 4032.12005 Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 26 Mar 2008 This Australian Standard was prepared by Co
2、mmittee WS-026, Valves Primarily for Use in Warm and Hot Water Systems. It was approved on behalf of the Council of Standards Australia on 18 November 2004. This Standard was published on 28 January 2005. The following are represented on Committee WS-026: AUSTAP Australian Chamber of Commerce and In
3、dustry Australian Industry Group Australian Association of Certification Bodies Building Research Association of New Zealand Business New Zealand SAI Global Department of Health (South Australia) Gas Appliance Manufacturers Association of Australia Housing Industry Association Institute of Hospital
4、Engineering Australia Master Plumbers and Mechanical Contractors Association NSW Master Plumbers, Gasfitters and Drainlayers New Zealand NSW Health Department Water Corporation Western Australia Keeping Standards up-to-date Standards are living documents which reflect progress in science, technology
5、 and systems. To maintain their currency, all Standards are periodically reviewed, and new editions are published. Between editions, amendments may be issued. Standards may also be withdrawn. It is important that readers assure themselves they are using a current Standard, which should include any a
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8、e Standards Web Shop. We also welcome suggestions for improvement in our Standards, and especially encourage readers to notify us immediately of any apparent inaccuracies or ambiguities. Contact us via email at mailstandards.org.au, or write to the Chief Executive, Standards Australia, GPO Box 5420,
9、 Sydney, NSW 2001. This Standard was issued in draft form for comment as DR 03576. Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 26 Mar 2008 AS 4032.12005 Australian Standard Water supplyValves for the control of heated water supply temperatures Part 1: Thermostatic mixing valves Materials design and
10、 performance requirements Originated as AS 40321992. Previous edition AS 40322002. Revised and redesignated as AS 4032.12005. COPYRIGHT Standards Australia All rights are reserved. No part of this work may be reproduced or copied in any form or by any means, electronic or mechanical, including photo
11、copying, without the written permission of the publisher. Published by Standards Australia GPO Box 5420, Sydney, NSW 2001, Australia ISBN 0 7337 6454 1 Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 26 Mar 2008 AS 4032.12005 2 PREFACE This Standard was prepared by the Joint Standards Australia/Standar
12、ds New Zealand Committee WS-026, Valves Primarily for Use in Warm and Hot Water Systems, to supersede AS 4032.12002, Thermostatic mixing valves. After consultation with stakeholders in both countries, Standards Australia/Standards New Zealand decided to develop this Standard as an Australian Standar
13、d rather than an Australian/New Zealand Standard. This revision includes provision for electronically controlled valves, requirements for hot water shut-off performance and increased sizes up to 50 mm This Standard is Part 1 of a suite of Standards that covers valves for the control of hot water tem
14、peratures as follows: AS 4032 Water supplyValves for the control of heated water supply temperatures 4032.1 Part 1: Thermostatic mixing valvesMaterials, design and performance requirements (this Standard) 4032.2 Part 2: Tempering valves and end-of-line temperature-activated devices 4032.3 Part 3: Re
15、quirements for field testing, maintenance or replacement of thermostatic mixing valves, tempering valves and end-of-line temperature control devices The objective of this Standard is to provide manufacturers, system designers, relevant authorities and others with performance requirements for thermos
16、tatic mixing valves, which give a level of protection to users against exposure to high or excessive fluctuations in mixed-water temperatures caused by variations, including shut-off, in the cold or hot water supply. The terms normative and informative have been used in this Standard to define the a
17、pplication of the appendix to which they apply. A normative appendix is an integral part of a Standard, whereas an informative appendix is only for information and guidance. Statements expressed in mandatory terms in notes, tables and figures are deemed to be requirements of this Standard. This Stan
18、dard necessarily deals with existing conditions, but is not intended to discourage innovation or to exclude material, equipment and methods that may be developed in the future. Revisions will be made from time to time in view of such developments, and amendments to this edition will be made only whe
19、n absolutely necessary. Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 26 Mar 2008 3 AS 4032.12005 CONTENTS Page SECTION 1 SCOPE AND GENERAL 1.1 SCOPE 5 1.2 APPLICATION.5 1.3 REFERENCED DOCUMENTS 5 1.4 DEFINITIONS 5 1.5 DESIGNATION 6 1.6 PRODUCT DATA.6 1.7 MARKING7 1.8 INSTRUCTIONS 8 SECTION 2 MATERIA
20、LS 2.1 SCOPE OF SECTION.9 2.2 CORROSION-RESISTANT METALLIC MATERIALS9 2.3 COPPER9 2.4 COPPER ALLOY9 2.5 DEZINCIFICATION-RESISTANT (DR) COPPER ALLOY9 2.6 STAINLESS STEEL .9 2.7 PLASTIC MATERIALS 10 2.8 OTHER COMPONENT MATERIALS . 10 SECTION 3 DESIGN AND MANUFACTURE 3.1 GENERAL 11 3.2 END CONNECTORS 1
21、1 3.3 LIMITATION OF TEMPERATURE ADJUSTMENT 11 3.4 ELECTRONIC VALVES 11 3.5 CROSS-FLOW PREVENTION DEVICES AND STRAINERS 11 3.6 ISOLATING VALVES 12 3.7 TMV WITH INTEGRAL OUTLET TAPS 12 SECTION 4 PERFORMANCE REQUIREMENTS 4.1 GENERAL 13 4.2 PRODUCTS IN CONTACT WITH DRINKING WATER 13 4.3 TORQUE TESTS 13
22、4.4 WATERTIGHTNESS AT AMBIENT TEMPERATURE 13 4.5 THERMAL SHUT-OFF 13 4.6 SENSITIVITY OF TEMPERATURE ADJUSTMENT 14 4.7 MIXED WATER TEMPERATURE OVERSHOOT ON STARTING FROM AMBIENT. 14 4.8 TEMPERATURE STABILITY OF MIXED WATER. 14 4.9 WATERTIGHTNESS AT OPERATING TEMPERATURE . 15 4.10 ENDURANCE OF CONTROL
23、 SYSTEM AND OPERATING MECHANISM . 15 4.11 SEQUENCE 15 APPENDICES A MEANS OF DEMONSTRATING COMPLIANCE WITH THIS STANDARD 17 B LIST OF REFERENCED DOCUMENTS . 21 Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 26 Mar 2008 AS 4032.12005 4 C INSTALLATION, COMMISSIONING, FIELD TESING AND MAINTENANCE INSTRUCT
24、IONS 23 D TEMPERATURE STOP/OVERRIDE CONTROL TORQUE TEST. 25 E WATERTIGHTNESS TEST . 27 F THERMAL SHUT-OFF TEST FOR COLD WATER AND HOT WATER ISOLATION 30 G SENSITIVITY OF TEMPERATURE ADJUSTMENT TEST. 36 H MIXED WATER TEMPERATURE OVERSHOOTING ON STARTING FROM AMBIENT. 38 I TEMPERATURE STABILITY OF MIX
25、ED WATER TEST. 43 J ENDURANCE TESTING OF THERMOSTATIC ELEMENT/SENSOR AND OPERATING MECHANISM TEST 48 K APPARATUS FOR TEST RIGS . 51 L PIPEWORK FOR TEST RIGS 53 M TYPICAL TEST RIG FOR PERFORMANCE TESTS 54 Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 26 Mar 2008 5 AS 4032.12005 .au Standards Australia
26、 STANDARDS AUSTRALIA Australian Standard Water supplyValves for the control of heated water supply temperatures Part 1: Thermostatic mixing valvesMaterials design and performance requirements S E C T I O N 1 S C O P E A N D G E N E R A L 1.1 SCOPE This Standard specifies requirements for the design,
27、 construction, testing performance and means of compliance for metallic-bodied thermostatic mixing valves (a) of nominal sizes not larger than DN 50; (b) for use with hot water at a supply temperature not exceeding 90C; and (c) for use with hot and cold water with working pressures not exceeding 140
28、0 kPa. 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
29、 of either the cold or hot water supply. NOTES: 1 Diagrams in this Standard are typical and chosen without prejudice. 2 Thermostatic mixing valves require routine maintenance and performance testing in accordance with AS 4032.3. 1.2 APPLICATION The operating range of the valve shall be nominated by
30、the manufacturer. Thermostatic mixing valves, when adjusted to an outlet temperature not exceeding 45C, are intended for use in health care, aged, childcare, people with disabilities or any other similar at risk situations. Thermostatic mixing valves, when adjusted to an outlet temperature not excee
31、ding 50C, may be used for other applications. Means for demonstrating compliance with this Standard shall be as given in Appendix A. 1.3 REFERENCED DOCUMENTS The documents referred to in this Standard are listed in Appendix B. 1.4 DEFINITIONS For the purpose of this Standard, the definitions in AS/N
32、ZS 3500.0 and the ones below apply. Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 26 Mar 2008 AS 4032.12005 6 Standards Australia .au 1.4.1 Cyclic actuator A device capable of activating the valve under test through the cycles of movements specified in this Standard, to simulate normal usage over a r
33、elatively short period of time. 1.4.2 Dynamic pressure ratio. The ratio at the hot and cold inlets of the higher to the lower dynamic pressures under flow conditions. 1.4.3 Special tools A specifically designed mechanism or method that would prevent the unauthorized adjustment of the temperature con
34、trol. NOTE: Screwdrivers, cross-head screwdrivers and conventional spanners are not considered special tools. 1.4.4 Temperature control An essential feature and an integral part of a thermostatic mixing valve, which permits the user to adjust the temperature of the mixed water to suit personal needs
35、. 1.4.5 Thermal shut-off (sudden failure of the cold or hot water supply) An operating safety feature wherein, if a thermostatic mixing valve is subjected to shut- off of the cold or hot water supply to it, the risk of scalding or cold shock to the user or person(s) exposed to the mixed water is min
36、imized. 1.4.6 Thermostatic mixing valve (TMV) A mixing valve in which the temperature of the water from the mixed water outlet is automatically controlled to a pre-selected temperature that is suitable for direct contact with the skin. 1.4.7 Water volume control A device that may be used to control
37、the rate of discharge of the mixed water. It is an integral part of an end-of-line valve or connected to the outlet for an in-line valve, and which may incorporate a temperature control valve. 1.5 DESIGNATION Thermostatic mixing valves shall be designated by (a) the nominal size of the water inlet c
38、onnections; and (b) operating function(s) and ancillary options. 1.6 PRODUCT DATA The product data shall be supplied with the valve and be readily available from the manufacturer or agent and shall comprise the following: (a) General information that includes (i) minimum and maximum specified dynami
39、c pressures at the inlets, in kilopascals; (ii) minimum and maximum permitted operating temperatures of the inlet hot and cold water, in degrees Celsius; (iii) minimum and maximum temperature settings of the mixed water, in degrees Celsius; Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 26 Mar 2008 7
40、AS 4032.12005 .au Standards Australia (iv) maximum dynamic pressure ratio; (v) whether suitable for one or more water outlet fixtures; (vi) whether provided with integral isolating valves; (vii) details of any other relevant data. (b) Specified values, with equal dynamic pressures (dynamic pressure
41、ratio equal to or less than 1.1:1), for the minimum and maximum (i) dynamic pressures at the inlets, in kilopascals; and (ii) flow rates at the outlet, in litres per minute, together with the pressure requirements for each when producing mixed water at the required temperature. NOTE: Values specifie
42、d in Items (a) and (b) are applicable to Tables G1 and G2. (c) The overall block dimensions and the type, e.g., surface mounted, concealed, single or multiple outlets. (d) Details of the end connectors. (e) The nominated factory pre-set temperature. (f) Manufacturers, or agents warranty for the prod
43、uct. 1.7 MARKING Products complying with this Standard shall be marked with the following information: (a) Manufacturers name, trademark or symbol. (b) Name or model number of the product. (c) Identification for traceability in the form of either (i) batch identification; or (ii) individual serial n
44、umber. (d) Certification Mark. (e) Controls used to vary the temperature of the mixed water shall be permanently marked, to make the effect of movement understood by the user. (f) The letter H, the word HOT, or a red indicator for the hot water inlet. The letter C, the word COLD, or a blue indicator
45、 for the cold water inlet. (g) The number of this Standard (i.e., AS 4032.1). (h) The maximum working pressure. (i) For electronic valves; (i) Electrical supply informationoperating voltage and the rating in amperes or loading in watts or volt-amperes. Any limitation to the operation of the product
46、shall also be marked (a.c., d.c., frequency, etc). (ii) A warning that the valve requires connection to electrical power and that it will not operate without power. This information shall be permanently marked on the valve body or shown on a rating plate affixed to the valve. Accessed by UNIVERSITY
47、OF SOUTH AUSTRALIA on 26 Mar 2008 AS 4032.12005 8 Standards Australia .au NOTES: 1 Manufacturers making a statement of compliance with this Australian Standard on a product, packaging, or promotional material related to that product are advised to ensure that such compliance is capable of being veri
48、fied. 2 The intention is to achieve permanency of the marking for the life of the product, or at least 5 years under normal conditions of use. 1.8 INSTRUCTIONS Each valve shall be accompanied by installation, commissioning, field-testing and maintenance instructions, in English, in accordance with A
49、ppendix C. NOTE: The field-testing and maintenance are to be carried out in accordance AS 4032.3. Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 26 Mar 2008 9 AS 4032.12005 .au Standards Australia S E C T I O N 2 M A T E R I A L S 2.1 SCOPE OF SECTION This Section specifies requirements for the materials for valves and component parts of valves. 2.2 CORROSION-RESISTANT METALLIC MATERIALS The parts of the