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1、A Reference number ISO 4422-4:1997(E) INTERNATIONAL STANDARD ISO 4422-4 First edition 1997-10-15 Pipes and fittings made of unplasticized poly(vinyl chloride) (PVC-U) for water supply Specifications Part 4: Valves and ancillary equipment Tubes et raccords en poly(chlorure de vinyle) non plastifi (PV
2、C-U) pour ladduction deau Spcifications Partie 4: Robinets et accessoires Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:37:04 MDTNo reproduction or networking permitted with
3、out license from IHS -,-,- ISO 4422-4:1997(E) ISO 1997 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publis
4、her. International Organization for Standardization Case postale 56 CH-1211 Genve 20 Switzerland Internetcentraliso.ch X.400c=ch; a=400net; p=iso; o=isocs; s=central Printed in Switzerland ii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national stan
5、dards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International org
6、anizations, governmental and non- governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are
7、 circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 4422-4 was prepared by Technical Committee ISO/TC 138, Plastics pipes, fittings and valves for the transport of flu
8、ids, Subcommittee SC 2, Plastics pipes and fittings for water supplies. Together with the other parts, this part of ISO 4422 cancels and replaces ISO 4422:1990, which has been technically revised. ISO 4422 consists of the following parts, under the general title Pipes and fittings made of unplastici
9、zed poly(vinyl chloride) (PVC-U) for water supply Specifications: Part 1: General Part 2: Pipes (with or without integral sockets) Part 3: Fittings and joints Part 4: Valves and ancillary equipment Part 5: Fitness for purpose of the system Copyright International Organization for Standardization Pro
10、vided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:37:04 MDTNo reproduction or networking permitted without license from IHS -,-,- ISOISO 4422-4:1997(E) iii ISO 4422 is one of a series of system standards for plastics piping systems which
11、 are being prepared within ISO/TC 138. Each system standard is based on a specific material for a specific application. They conform to a standard multi-part format, each part dealing with a specific aspect of the overall system. NOTE At the present time, the reference document for the installation
12、code is ISO/TR 4191, and this document will ultimately form part 6 of this International Standard. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:37:04 MDTNo reproduction or
13、networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:37:04 MDTNo reproduction or networking permitted without license from IHS -
14、,-,- INTERNATIONAL STANDARD ISOISO 4422-4:1997(E) 1 Pipes and fittings made of unplasticized poly(vinyl chloride) (PVC-U) for water supply Specifications Part 4: Valves and ancillary equipment 1 Scope This part of ISO 4422 specifies the characteristics and properties of valves and ancillary equipmen
15、t made of unplasticized poly(vinyl chloride) (PVC-U), to be used for buried water mains and services and for water supplies above ground, both inside and outside buildings. The valves and ancillary equipment covered by this part of ISO 4422 are intended for the conveyance of cold water under pressur
16、e at temperatures up to 20 C, for general purposes and for the supply of drinking water. This part of ISO 4422 is also applicable to water up to and including 45 C (see figure 1 in ISO 4422-2:1996). The following ancillaries are included: tapping saddles. 2 Normative references The following standar
17、ds contain provisions which, through reference in this text, constitute provisions of this part of ISO 4422. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of ISO 4422 are encouraged to investigate th
18、e possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 7-1:1994, Pipe threads where pressure-tight joints are made on the threads Part 1: Dimensions, tolerances and designation. IS
19、O 580:1990, Injection-moulded unplasticized poly(vinyl chloride) (PVC-U) fittings Oven test Test method and basic specification. ISO 2507-2:1995, Thermoplastics pipes and fittings Vicat softening temperature Part 2: Test conditions for unplasticized poly(vinyl chloride) (PVC-U) or chlorinated poly(v
20、inyl chloride) (PVC-C) pipes and fittings and for high impact resistance poly(vinyl chloride) (PVC-HI) pipes. ISO 2536:1974, Unplasticized polyvinyl chloride (PVC) pressure pipes and fittings, metric series Dimensions of flanges. ISO/TR 4191:1989, Unplasticized polyvinyl chloride (PVC-U) pipes for w
21、ater supply Recommended practice for laying. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:37:04 MDTNo reproduction or networking permitted without license from IHS -,-,- IS
22、O 4422-4:1997(E) ISO 2 ISO 4422-1:1996, Pipes and fittings made of unplasticized poly(vinyl chloride) (PVC-U) for water supply Specifications Part 1: General. ISO 4422-2:1996, Pipes and fittings made of unplasticized poly(vinyl chloride) (PVC-U) for water supply Specifications Part 2: Pipes (with or
23、 without integral sockets). ISO 4422-3:1996, Pipes and fittings made of unplasticized poly(vinyl chloride) (PVC-U) for water supply Specifications Part 3: Fittings and joints. ISO 5752:1982, Metal valves for use in flanged pipe systems Face-to-face and centre-to-face dimensions. ISO 6708:1995, Pipew
24、ork components Definition and selection of DN (nominal size). ISO 7349:1983, Thermoplastics valves Connection references. ISO 7508:1985, Unplasticized polyvinyl chloride (PVC-U) valves for pipes under pressure Basic dimensions Metric series. ISO 8233:1988, Thermoplastics valves Torque Test method. I
25、SO 8659:1989, Thermoplastics valves Fatigue strength Test method. ISO 9393-1:1994, Thermoplastics valves Pressure test methods and requirements Part 1: General. ISO 9393-2:1997, Thermoplastics valves Pressure test methods and requirements Part 2: Test conditions and basic requirements for PE, PP, PV
26、C-U and PVDF valves. ISO 9853:1991, Injection-moulded unplasticized poly(vinyl chloride) (PVC-U) fittings for pressure pipe systems Crushing test. 3 Definitions For the purposes of this part of ISO 4422, the definitions given in ISO 4422-1 apply. 4 Material 4.1 Valve bodies and ancillaries The mater
27、ial from which the valve bodies and the main components of the ancillaries which are in contact with the conveyed water are made shall be PVC-U and shall comply with the requirements specified in ISO 4422-3. 4.2 Use of reworked material Clean reworked material produced during the manufacture and wor
28、ks testing of products conforming to this part of ISO 4422 may be used in limited amounts, provided it is derived from the same compound as used for the relevant production, and does not prevent conformity to this part of ISO 4422. 5 General requirements 5.1 Appearance When viewed without magnificat
29、ion, the internal and external surfaces of valves and ancillaries shall be smooth, clean and free from scoring, cavities and other surface defects which would prevent conformity with this part of ISO 4422. Copyright International Organization for Standardization Provided by IHS under license with IS
30、O Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:37:04 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO ISO 4422-4:1997(E) 3 5.2 Temperature derating The temperature derating factor for working temperatures between 25 C and 45 C shall be the
31、 same as that specified for pipes in 5.4 of ISO 4422-2:1996. 6 Geometrical characteristics 6.1 Design of valves and ancillaries 6.1.1 Diameter The nominal outside diameter dn of valves and ancillaries shall correspond to and be designated by the nominal outside diameter of the pipes for which they a
32、re designed. 6.2 Valves 6.2.1 Types of valve Valves covered by this part of ISO 4422 shall be categorized by the valve design, i.e. “gate”, “ball”, “diaphragm”, “plug” or “butterfly”, and by the type of connection, i.e. solvent-cementing, elastomeric sealing ring joints or flange joints. 6.2.2 Joint
33、 dimensions 6.2.2.1 Sockets and spigots for solvent cement type valves The socket and spigot dimensions of the valves and ancillary equipment shall be the same as for pipes and fittings conforming to ISO 4422-2 or ISO 4422-3, as applicable. 6.2.2.2 Sockets and spigots for sealing ring type valves Th
34、e socket and spigot dimensions of the valves shall be the same as for pipes and fittings conforming to ISO 4422-2 or ISO 4422-3, as applicable. 6.2.2.3 Mating dimensions for flange type valves The mating dimensions of the flanges used on valves shall be in accordance with ISO 2536. 6.2.3 Laying leng
35、ths Recommended laying lengths are given in manufacturers catalogues. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:37:04 MDTNo reproduction or networking permitted without
36、license from IHS -,-,- ISO 4422-4:1997(E) ISO 4 6.2.3.1 Valves with plain socket ends See figure 1. Figure 1 Valve with plain socket ends 6.2.3.2 Valves with plain spigot ends See figure 2. Figure 2 Valve with plain spigot ends 6.2.3.3 Valves with sealing ring type sockets See figure 3. Figure 3 Val
37、ve with sealing ring type sockets Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:37:04 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO ISO 4422-
38、4:1997(E) 5 6.2.3.4 Valves with flanged ends 6.2.3.4.1 Gate valves See figure 4 and table 1. Figure 4 Gate valve with flanged ends Table 1 Laying lengths of gate valves Dimensions in millimetres Nominal outside diameter of pipe dn Nominal size DN Face-to-face length 1) L1 shortlong 50 63 75 90 110 1
39、40 160 225 280 315 40 50 65 80 100 125 150 200 250 300 165 178 190 203 229 254 267 292 300 356 240 250 270 280 300 325 350 400 450 500 1) Conforming to table 3 of ISO 5752:1982. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical St
40、andards 1/9972545001 Not for Resale, 04/20/2007 06:37:04 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 4422-4:1997(E) ISO 6 6.2.3.4.2 Butterfly valves See figures 5 and 6 and table 2. Figure 5 Butterfly valve with flangeless (wafer) body Figure 6 Butterfly valve with
41、double-flanged body Table 2 Laying lengths of butterfly valves Dimensions in millimetres NominalButterfly valves outside diameterNominal size1)FlangelessDouble-flanged Tolerance of pipe Face-to-face length on dnDNL2 2)L3 3)L2 and L3 shortmediumlongshort 50 63 75 90 110 140 160 225 280 40 50 65 80 10
42、0 125 150 200 250 33 43 46 46 52 56 56 60 68 33 43 46 49 56 64 70 71 76 33 43 46 64 64 70 76 89 114 106 108 112 114 127 140 140 152 165 2 3153007883114178 3 1) Conforming to ISO 6708. 2) Conforming to table 5 of ISO 5752:1982 and table 2 of ISO 7508:1985 (see also figure 5). 3) Conforming to table 4
43、 of ISO 5752:1982 and table 2 of ISO 7508:1985 (see also figure 6). Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:37:04 MDTNo reproduction or networking permitted without li
44、cense from IHS -,-,- ISO ISO 4422-4:1997(E) 7 6.2.3.4.3 Plug, ball and diaphragm valves See figure 7 and table 3. Figure 7 Plug, ball or diaphragm valve with flanged ends Table 3 Laying lengths of plug, ball and diaphragm valves Dimensions in millimetres Nominal outside diameter of pipe dn Nominal s
45、ize1) DN Face-to-face length2), 3) L1 nom.tol. 16 20 25 32 40 50 63 10 15 20 25 32 40 50 130 130 150 160 180 200 230 2 75 90 110 125 140 160 65 80 100 100/125 125 150 290 310 350 400 400 480 3 1) Conforming to ISO 7349. 2) Conforming to tables 6 and 7 of ISO 5752:1982 and table 1 of ISO 7508:1985. 3
46、) The centre-to-face dimension of a three-way valve shall be 0,5L1. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:37:04 MDTNo reproduction or networking permitted without li
47、cense from IHS -,-,- ISO 4422-4:1997(E) ISO 8 6.3 Ancillary equipment 6.3.1 Tapping saddles Tapping saddles with or without shut-off devices are connected to the water supply mains by solvent-cementing or mechanically with an elastomeric seal. Typical tapping-saddle types are shown in figures 8 to 11 and their dimensions given in table 4. Other designs are allowed. Figure 8 Socket saddle (solvent-cementing type) Figure 9 Tee saddle (parallel-connection, solvent-cementing type) Figure 10 Tee saddle (right-angled connection, mech
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