AS-2419.2-1994.pdf

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1、AS 2419.21994 Australian Standard Fire hydrant installations Part 2: Fire hydrant valves Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 28 Aug 2007 This Australian Standard was prepared by Committee FP/9, FireHydrant Installations. It was approved on behalf of the Council of Standards Australian on 1

2、September 1994 and published on 17 October 1994. The following interests are represented on Committee FP/9: Association of Certification Bodies Australian Building Codes Board Australian Chamber of Commerce and Industry Australian Fire Authorities Council Australian Fire Protection Association Austr

3、alian Valve Manufacturers Association Civil Aviation Authority Commonwealth Fire Board Department of Bush Fire Services New South Wales Department of Defence Fire Protection Industry Association of Australia Institution of Engineers, Australia Melbourne Water Water Board SydneyIllawarraBlue Mountain

4、s Western Australian Fire Brigade Board Review of Australian Standards. To keep abreast of progress in industry, Australian Standards are subject to periodic review and are kept up to date by the issue of amendments or new editions as necessary. It is important therefore that Standards users ensure

5、that they are in possession of the latest edition, and any amendments thereto. Full details of all Australian Standards and related publications will be found in the Standards Australia Catalogue of Publications; this information is supplemented each month by the magazine The Australian Standard, wh

6、ich subscribing members receive, and which gives details of new publications, new editions and amendments, and of withdrawn Standards. Suggestions for improvements to Australian Standards, addressed to the head office of Standards Australia, are welcomed. Notification of any inaccuracy or ambiguity

7、found in an Australian Standard should be made without delay in order that the matter may be investigated and appropriate action taken. Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 28 Aug 2007 AS 2419.21994 Australian Standard Fire hydrant installations Part 2: Fire hydrant valves First published as

8、 AS 2419.21991. Second edition 1994. Incorporating: Amdt 11996 PUBLISHED BY STANDARDS AUSTRALIA (STANDARDS ASSOCIATION OF AUSTRALIA) 1 THE CRESCENT, HOMEBUSH, NSW 2140 ISBN 0 7262 9279 6 Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 28 Aug 2007 AS 2419.219942 PREFACE This Standard was prepared by the

9、 Standards Australia Committee on Fire Hydrant Installations FP/9 to supersede AS 2419.2 1991. The Standard isintended to complement AS 2419.11994, Fire hydrant installations, Part 1: System design, installation and commissioning. The terms normative and informative have been used in this Standard t

10、o 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. CopyrightSTANDARDS AUSTRALIA Users of Standards are reminded that copyright subsists in all Standards Australia

11、publications and software. Except where the Copyright Act allows and except where provided for below no publications or software produced by Standards Australia may be reproduced, stored in a retrieval system in any form or transmitted by any means without prior permission in writing from Standards

12、Australia. Permission may be conditional on an appropriate royalty payment. Requests for permission and information on commercial software royalties should be directed to the head office of Standards Australia. Standards Australia will permit up to 10 percent of the technical content pages of a Stan

13、dard to be copied for use exclusively in-house by purchasers of the Standard without payment of a royalty or advice to Standards Australia. Standards Australia will also permit the inclusion of its copyright material in computer software programs for no royalty payment provided such programs are use

14、d exclusively in-house by the creators of the programs. Care should be taken to ensure that material used is from the current edition of the Standard and that it is updated whenever the Standard is amended or revised. The number and date of the Standard should therefore be clearly identified. The us

15、e of material in print form or in computer software programs to be used commercially, with or without payment, or in commercial contracts is subject to the payment of a royalty. This policy may be varied by Standards Australia at any time. Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 28 Aug 2007 3AS

16、 2419.2 1994 CONTENTS Page SECTION 1 SCOPE AND GENERAL 1.1SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 1.2APPLICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 1.3NEW DESIGNS AND INNOVATIONS . .

17、. . . . . . . . . . . . . . . . . . . . . . . .4 1.4REFERENCED DOCUMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 1.5DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 SECTION 2 GENERAL REQUIREMENTS 2.1GENERAL . . . . . . . . .

18、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 2.2VALVE BODIES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 2.3VALVE INLETS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 2.4BONNETS . . . . . . . .

19、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 2.5STEMS AND DISCS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 2.6CONTAMINATION OF WATER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8a 2.7HANDWHEELS . . . . . . . . . . .

20、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8a 2.8BLANK CAPS OR PLUGS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 2.9MARKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 SECTION 3 PERFORMANCE REQUIREMENTS 3.1GEN

21、ERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.2PRESSURE LOSS CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.3HYDROSTATIC PRESSURE RETENTION . . . . . . . . . . . . . . . . . . . . . . . 10 APPENDICES AFIRE HOSE COUPLING

22、TYPES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 BPURCHASING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 CHYDROSTATIC PRESSURE TESTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 28 Aug

23、 2007 AS 2419.219944 STANDARDS AUSTRALIA Australian Standard Fire hydrant installations Part 2: Fire hydrant valves S E C T I O N1S C O P EA N DG E N E R A L 1.1SCOPEThisStandardspecifiesrequirementsforthedesign,construction, performance, and testing of valves suitable for installation as fire hydra

24、nt valves. 1.2APPLICATIONThisStandardappliestofirehydrantvalvesintendedfor installation in accordance with AS 2419.1, and having rolled groove, shouldered, screwed or flanged inlets with a bore of either 38 mm or 65 mm nominal diameter. Hydrant valve outlets shall have hose connections not less than

25、 65 mm nominal diameter, and methods of attachment shall comply with the local fire brigade requirements. NOTE: Guidance on types, and the locations where used, of fire hose couplings is given in Appendix A. 1.3NEWDESIGNSANDINNOVATIONSAnyalternativematerials,designs, methods of assembly, procedures

26、etc. that do not comply with specific requirements of this Standard, or are not mentioned in it, but that give equivalent results to those specified, are not necessarily prohibited. The specified approval remains the prerogative of the regulatory authority. 1.4REFERENCED DOCUMENTSThe following docum

27、ents are referred to in this Standard: AS 1565Copper and copper alloysIngots and castings 1567Copper and copper alloysWrought rods, bars and sections 1568Copper and copper alloysForging stock and forgings 1683Methods of test for elastomers 1683.15.2Part 15.2: Durometer hardness 1722Pipe threads of W

28、hitworth form 1722.1Part 1: Sealing pipe threads 1830Iron castingsGrey cast iron 1831Iron castingsSpheroidal or nodular graphite cast iron 1832Iron castingsMalleable cast iron 1874Aluminium and aluminium alloys Ingots and castings 2129Flanges for pipes, valves, and fittings 2345Dezincification resis

29、tance of copper alloys COPYRIGHT Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 28 Aug 2007 5AS 2419.2 1994 AS 2419Fire hydrant installations 2419.1Part 1: System design, installation, and commissioning 2484FireGlossary of terms 2484.2Part 2: Fire protection and firefighting equipment 2837Wrought allo

30、y steelsStainless steel bars and semi-finished products. 2845Water supplyMechanical backflow prevention devices 3718Water supplyMetal bodied taps specified by performance. 3855Suitability of plumbing and water distribution systems products for contact with potable water ANSI/AWWAAmerican Water Works

31、 Association Standard for grooved and shouldered joints. BS 336Specification for fire hose couplings and ancillary equipment DIN 14303Aluminium alloy delivery coupling 1.5DEFINITIONSForthepurposesofthisStandard,thedefinitionsgivenin AS 2484.2 apply. COPYRIGHT Accessed by UNIVERSITY OF SOUTH AUSTRALI

32、A on 28 Aug 2007 AS 2419.219946 S E C T I O N2G E N E R A LR E Q U I R E M E N T S 2.1GENERALValves shall be of the horizontal, bib-nosed, oblique, or right-angle type, the general forms of which are shown in Figure 2.1. The materials, form and construction of the fire hydrant valve shall be such th

33、at it will be practicable to install and maintain the valve in a reliable condition. FIGURE 2.1 VALVE TYPES SHOWN WITH BLANK CAPS ON OUTLETS Eachcomponentofthehydrantvalveshallbemadefromcompatiblematerial. Appropriate material is specified in Table 2.1. Materials shall be suitable for continuous use

34、 at their nominal pressure ratings over the temperature range 10C to 85C. Where copper alloy is in contact with potable water it shall be dezincification-resistant (DR) in accordance with AS 2345. Dezincification-resistanceshallbeassessedonthefittingafterallmanufacturing procedures are completed but

35、 prior to installation. NOTE:Purchasers should provide the information given in Appendix B with their orders or tenders for hydrant valves. 2.2VALVE BODIES 2.2.1GeneralThe body wall thickness at any point shall be sufficient to retain the proof test pressure without distortion or rupture, and be a m

36、inimum of 3 mm for valves made of copper alloy and 8 mm for valves made of cast iron. 2.2.2Body seatThe body seat shall be integral with or screwed into the body and shall withstand a pressure of 2700 kPa. The shape of the seating surface shall be suited to the type of disc used. The seating face sh

37、all be not less than 3 mm wide. 2.3VALVE INLETS AND OUTLETS 2.3.1GeneralValve inlets shall be rigid roll grooved, rigid shouldered, screwed, or flange-ended.The nominal inlet diameter shall be either 38 mm or 65 mm inside diameter, as appropriate. Valveoutletsshallhavehoseconnectionscomplyingwiththe

38、localfire brigade requirements. COPYRIGHT Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 28 Aug 2007 7AS 2419.2 1994 TABLE2.1 VALVE COMPONENT MATERIALS ComponentMaterialASMinimum grade or designation BodyCopper alloy Grey cast iron 1565 1830 C85210 or C83600 T-220 BonnetCopper alloy Grey cast iron 156

39、5 1830 C85210 or C83600 T-220 StemCopper alloy Stainless steel 1565 1567 or 1568 2837 C85210 or C83600 486 316 or 431 DiscCopper alloy1565 1567 or 1568 C85210 or C83600 486 HandwheelCopper alloy Grey cast iron Spheroidal graphite cast iron Malleable cast iron Aluminium alloy 1565 1568 1830 1831 1832

40、 1874 C85210 or C83600 486 T220 EA 401, AA 601 or AA 607 Blank cap or plugCopper alloy Aluminium alloy Malleable cast iron Plastics or rubber 1565 1874 1832 C85210 or C83600 CA 401, AA 601 or AA 607 T-180 U-V stabilized Screwed seatCopper alloy1565 1567 C85210 or C83600 486 Seals: (a) Joint washers

41、(b) Seating disc (c) Gland packing (d) O rings Plastics, compounds or rubber Plastics or rubber Asbestos free Elastomers 3718 2419.2 3718 3718 Lubricants3855 NOTE: Suitable plastics or rubber may be used for gaskets and disc facings with authorities approval. 2.3.2Screwed endsScrewed ends shall have

42、 external or internal threads in accordance with AS 1722.1. The thickness of externally threaded ends shall be not less than 3 mm from the root diameter of the thread to the bore of the inlet (see Clause 2.2.1). Threaded body inlets shall have a hexagonal section concentric with and adjacent to the

43、thread to facilitate tightening. If inlets are roll groove, rigid shouldered or flanged, they do not require a hexagonal section. 2.3.3Flanged endsInlet flanges shall comply with the requirements of AS 2129. The area surrounding the bolt holes on the flange shall be cast smooth and level, or machine

44、d, or spot-faced to ensure a satisfactory attachment. 2.3.4Roll groove endsRoll groove ends shall comply with ANSI/AWWA C 606 and Figure 2.2. 2.3.5ShoulderedendsShoulderedendsshallbetherigidtypeandcomplywith ANSI/AWWA C 606 and Figure 2.2. 2.4BONNETSThe bonnet wall thickness shall be sufficient to r

45、etain both proof and burst test pressures without distortion or leakage. The bonnet-to-body connection shall be screwed. The surfaces forming this connection shall be machined. The joint may be made with a gasket or O-ring suitable for the service temperature range (see Clause 2.1). 2.5STEMS AND DIS

46、CS 2.5.1GeneralHydrant valves shall be of the rising stem, internal screw type, having the actuating thread enclosed within the bonnet. Stems shall be formed in one piece and shall be of sufficient length to ensure a minimum clearance in accordance with Figure 2.3 between the handwheel and any part

47、of the valve when the valve is in the closed position. The handwheel shall be attached to the stem by means of a square drive, secured by peening, setscrew, or nut and washer at the top of the stem. The handwheel shall not be attached to the stem by means of a pin which passes through the side of th

48、e stem. COPYRIGHT Accessed by UNIVERSITY OF SOUTH AUSTRALIA on 28 Aug 2007 AS 2419.219948 (a) Roll grooved type coupling(b) Shouldered end type coupling FIGURE 2.2 RIGID ROLL GROOVED AND SHOULDERED JOINT ENDS DIMENSIONS IN MILLIMETRES FIGURE 2.3 MINIMUM CLEARANCE 2.5.2Stem dimensions and threadsThe

49、diameter of the stem, including thread roots, shall be not less than 16 mm where the stem is made from C67830 alloy, nor less than 19 mm for any of the other permissible copper alloys (see Table 2.1). Square sections or drives on the stem shall be not less than 12 mm across flats. The actuating thread shall be either an acme screw or one with a square profile. 2.5.3Stem sealingEach valve shall be provided with a suitable means of sealing the stem. It shall be possible to replace or re-pack the seal when under pressure with the valve fully