【AS澳大利亞標(biāo)準(zhǔn)】AS 1357.1-2009 Valves primarily for use in heated water systems - Part 1 Protection valves.doc

as 1357.12009as 1357.12009australian standardvalves primarily for use in heated water systemspart 1: protection valvesthis australian standard was prepared by committee ws-026, valves primarily for use in warm and hot water systems. it was approved on behalf of the council of standards australia on 22 september 2008.this standard was published on 28 january 2009.the following are represented on committee ws-026:australian chamber of commerce and industryaustralian industry groupbuilding officials institute of new zealandconsumers federation of australiadepartment of health (south australia)gas appliance manufacturers association of australiainstitute of hospital engineering australiamaster plumbers and mechanical services association of australiamaster plumbers association of nswmaster plumbers, gasfitters and drainlayers new zealandnew zealand employers and manufacturers associationnew zealand engineers federationnsw health departmentplumbing product industry group (austap)water corporation western australiathis standard was issued in draft form for comment as dr 07139.standards australia wishes to acknowledge the participation of the expert individuals that contributed to the development of this standard through their representation on the committee and through the public comment period.keeping standards up-to-dateaustralian standards are living documents that reflect progress in science, technology 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 between editions, amendments may be issued.standards may also be withdrawn.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 amendments that may have been published since the standard was published.detailed information about australian standards, drafts, amendments and new projects can be found by visiting .austandards australia welcomes suggestions for improvements, and encourages readers to notify us immediately of any apparent inaccuracies or ambiguities. contact us via email at .au, or write to standards australia, gpo box 476, sydney, nsw 2001.as 1357.12009australian standardvalves primarily for use in heated water systemspart 1: protection valvesoriginated as as b2711968.as b2711968 revised and redesignated as 13571972.as 13571972 revised and redesignated in part as 1357.11988. fourth edition 2009.copyright standards australiaall rights are reserved. no part of this work may be reproduced or copied in any form or by any means, electronic or mechanical, including photocopying, without the written permission of the publisher.published by standards australia gpo box 476, sydney, nsw 2001, australiaisbn 0 7337 8995 1prefacethis standard was prepared by the australian members of the joint standards australia/standards new zealand committee ws-026, valves primarily for use in warm and hot water systems, to supersede as 1357.12004, water supplyvalves for use with unvented water heaters, part 1: protection valves, and ats 5200.4762006, technical specification for plumbing and drainage products, part 476: heated water systemsleak protection device.after consultation with stakeholders in both countries, standards australia and standards new zealand decided to develop this standard as an australian standard rather than an australian/new zealand standard.the objective of this standard is to provide manufacturers with design, materials and performance requirements for the protection of valves.other standards covering heated water system valves include the following: as1357valves primarily for use in heated water systems1357.2part 2:control valves4032water supplyvalves for the control of heated water supply temperatures4032.1part 1:thermostatic mixing valvesmaterials design and performancerequirements4032.2part 2:tempering valves and end-of-line temperature actuated devices4032.3part 3:requirements for field testing, maintenance or replacement ofthermostatic mixing valves, tempering valves and end of linetemperature control devicesthe terms normative and informative have been used in this standard to define the application 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 to tables and figures are deemed to be requirements of this standard.93as 1357.12009contentspagesection 1 scope and general1.1scope . 61.2application . 61.3normative references . 61.4definitions . 61.5instrumentation . 81.6marking . 8section 2 materials2.1general . 92.2contamination of water . 92.3corrosion-resistant metallic materials . 92.4copper . 92.5copper alloy. 92.6dezincification-resistant (dr) copper alloy . 92.7stainless steel . 102.8diaphragm materials, and valve seats. 102.9temperature-sensing probe . 102.10 other components . 10section 3 general design and contruction3.1general . 123.2strength . 123.3end connections . 123.4components and valve seats . 123.5remanufactured valves . 123.6insulation of temperature/pressure-relief valves, temperature-relief valves, expansion control valves and combination high-pressure expansion non-return valves . 133.7installation instructions . 14section 4 temperature/pressure-relief valves4.1general . 154.2inlet and drain connections and flow dimensions . 154.3valve seat and disc assemblies . 174.4springs pressure-relief function . 174.5testing . 174.6easing gear test . 204.7auxiliary pressure-relief device . 214.8pressure-relief function . 214.9temperature-relief function . 224.10 marking . 23section 5 expansion control valves5.1general . 245.2connections and flow dimensions . 245.3valve seat and disc assemblies . 255.4springs. 255.5testing . 255.6easing gear . 265.7auxiliary pressure-relief device . 275.8expansion-control valve function . 275.9marking . 28section 6 non-return valves6.1general . 296.2inlet and outlet connections. 296.3testing . 296.4flow rate and closing pressure . 306.5endurance test . 306.6orientation . 306.7marking . 30section 7 temperature-relief valves7.1general . 317.2inlet and drain connections and flow dimensions . 317.3valve seat and disc assemblies . 337.4springs. 337.5testing . 337.6easing gear test . 347.7auxiliary pressure-relief device . 357.8temperature-relief function . 357.9pressure setting . 367.10 marking . 36section 8 combination high pressure expansion non-return valves (hpnr)8.1general . 378.2connections and flow dimensions . 378.3valve seat and disc assemblies . 388.4springs. 388.5testing . 388.6easing gear . 398.7expansion control valve function. 398.8marking . 39section 9 leak-protection devices9.1general . 409.2design . 409.3performance requirements and test methods. 409.4marking . 40appendicesameans for demonstrating compliance with this standard . 41bnormative references . 43cinstrumentationaccuracy . 45dmeasurement of noise emission . 46etorque test. 47fleakage test . 49geasing gear test for temperature/pressure-relief valves, temperature-relief valves and expansion-control valves . 51hauxiliary pressure-relief devices test. 53irated expansion capacity test for temperature/pressure- relief valves and expansion-control valves . 55j water discharge capacity test for temperature-pressure-relief valves and temperature-relief valves . 57k opening pressure test and reseating pressure test for temperature/pressure-relief valves and expansion-control valves . 59lendurance (pressure) test for temperature/pressure-relief valves and expansion-control valves . 62mopening and reseating temperature tests for temperature/ pressure-relief valves and temperature-relief valves . 64nendurance (temperature-relief) test for temperature/pressure-relief valves and temperature-relief valves . 66osteam discharge capacity test for temperature/pressure- relief valves and temperature-relief valves . 69pflow rate test for non-return valves . 72qclosing pressure test for non-return valves . 74rendurance test for non-return valves . 75ssampling and frequency plans for temperature/pressure- relief valves . 77t sampling and frequency plans for expansion controlvalves . 80usampling and frequency plans for non-return valves . 82v sampling and frequency plans for temperature-reliefvalves . 84wsampling and frequency plans for combinationhigh-pressure expansion non-return (hpnr) valves . 86x sampling and frequency plans for leak-protectiondevices . 88yclosing test for leak-detection devices . 90zendurance test for leak-detection devices . 91standards australiaaustralian standardvalves primarily for use in heated water systemspart 1: protection valvess e c t i o n1s c o p ea n dg e n e r a l1.1 scopethis standard sets out requirements for the design, construction, testing and performance of the following types of valves, within the range of dn 15 to dn 50:(a) temperature/pressure-relief valves. (b)expansion-control valves.(c) non-return valves.(d)temperature-relief valves.(e) combination high-pressure expansion non-return valves (hpnr). (f)leak-protection devices.the valves specified in this standard are primarily intended for use in warm and hot water systems that are required to operate at(a) continuous operating temperatures not exceeding 85c;(b)temperatures under emergency conditions, not exceeding 99c; and(c) continuous working pressure not exceeding 1400 kpa.note: for valves used with water heaters, which are intended to operate at temperatures above99c (e.g., hot water boilers), see as 1271.1.2 applicationmeans for demonstrating compliance with this standard shall be as given in appendix a.1.3 normative referencesdocuments referred to in this standard in normative terms are listed in appendix b.note: documents referenced for informative purposes are listed in the bibliography.1.4 definitionsfor the purpose of this standard, the definitions given in as/nzs 3500.0 and those below apply.1.4.1 auxiliary pressure-relief devicepressure-operated device forming part of an expansion control valve, temperature-relief valve or temperat