BS 5163-1-2004 Valves for waterworks purposes - Predominantly key-operated cast iron gate valves - Code of practice《水厂用阀 主要键操作的铸铁闸阀 操作规范》.pdf

1、BRITISH STANDARD BS 5163-1:2004 Valves for waterworks purposes Part 1: Predominantly key-operated cast iron gate valves Code of practice ICS 23.060.30 BS 5163-1:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 23 December 2004 BSI 23 Dece

2、mber 2004 First published October 1974 First revision October 1986 First published as Part 1 December 2004 The following BSI references relate to the work on this British Standard: Committee reference PSE/7/3 Draft for comment 04/30082123 DC ISBN 0 580 44713 8 Committees responsible for this British

3、 Standard The preparation of this British Standard was entrusted by Technical Committee PSE/7, Industrial valves, to Subcommittee PSE/7/3, Cast iron isolating, check and hydrant valves for industrial use and valves for water industry applications, upon which the following bodies were represented: Br

4、itish Chemical Engineering Contractors Association BVAA British Valve and Actuator Association CMF Cast Metals Federation Ductile Iron Producers Association Energy Industries Council Institution of Mechanical Engineers Pipeline Industries Guild Society of British Water Industries Water UK Amendments

5、 issued since publication Amd. No. Date CommentsBS 5163-1:2004 BSI 23 December 2004 i Contents Page Committees responsible Inside front cover Foreword ii 1S c o p e 1 2 Normative references 1 3T e r m s a n d d e f i n i t i o n s 1 4 Preferred features 2 5 Valves for water intended for human consum

6、ption Effect of materials on water quality 6 6M a r k i n g 6 7 Preparation for storage and transport 6 Annex A (normative) Information to be supplied by the purchaser 7 Bibliography 9 Figure 1 Typical operator Ring key and bar 2 Figure 2 Typical operator T key 3 Figure 3 Maximum overall height 4 Ta

7、ble 1 Maximum overall heights 4BS 5163-1:2004 ii BSI 23 December 2004 Foreword This part of BS 5163 has been prepared under the direction of PSE/7 to facilitate the application of BS EN 1074-1:2000 and BS EN 1074-2:2000. Along with BS 5163-2:2004, BS EN 1074-1:2000 and BS EN 1074-2:2000, this part o

8、f BS 5163 supersedes BS 5163:1986, which is withdrawn. This standard provides guidance on certain aspects of valve selection and operation that will permit the integration of new gate valve products into water distribution networks within the UK with the minimum of physical impact and operating cost

9、s. A number of aspects of valve construction considered essential for consistency of operation are provided in this code of practice that are not detailed within BS EN 1074-1:2000 or BS EN 1074-2:2000. Guidance is also provided in this code of practice as to those aspects that might affect operating

10、 costs and thus have an impact on selection of appropriate gate valves for UK distribution networks. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confe

11、r immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 9 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.BS 5163-1:2004 BSI 23 December 2004 1 1 Sco

12、pe This part of BS 5163 gives guidance on selection, including reference to preferred features and operation, of cast iron gate valves, complying with BS EN 1074-1 and BS EN 1074-2, with flanged ends, that are ring key and bar operated. These valves are primarily for underground use for waterworks p

13、urposes and primarily for use with water intended for human consumption in the United Kingdom. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest ed

14、ition of the referenced document (including any amendments) applies. BS 5163-2, Gate valves for waterworks purposes Part 2: Stem caps for use on isolating valves and hydrants in pipelines carrying water for human consumption Specification. BS 6920-1, Suitability of non-metallic products for use in c

15、onstant contact with water intended for human consumption with regard to their effect on the quality of water Part 1: Specification. BS EN 558-1:1996, Industrial valves Face-to-face and centre-to-face dimensions of metal valves for use in flanged pipe systems Part 1: PN-designated valves. BS EN 681-

16、1:1996, Elastomeric seals Material requirements for pipe joint seals used in water and drainage applications Part 1: Vulcanized rubber. BS EN 736-2, Valves Terminology Part 2: Definition of components of valves. BS EN 736-3, Valves Terminology Part 3: Definition of terms. BS EN 1074-1, Valves for wa

17、ter supply Fitness for purpose requirements and appropriate verification tests Part 1: General requirements. BS EN 1074-2, Valves for water supply Fitness for purpose requirements and appropriate verification tests Part 2: Isolating valves. BS EN 1092-2, Flanges and their joints Circular flanges for

18、 pipes, valves, fittings and accessories, PN designated Part 2: Cast iron flanges. BS EN 1503-3, Valves Materials for bodies, bonnets and covers Part 3: Cast irons specified in European Standards. BS EN 1982:1999, Copper and copper alloys Ingots and castings. BS EN ISO 5210, Industrial valves Multi-

19、turn valve actuator attachments. WRc. WIS-4-52-01, Polymeric anti-corrosion (barrier) coatings. 1992. () GREAT BRITAIN. Water Supply (Water Quality) Regulations 2000. London: The Stationery Office. GREAT BRITAIN. Water Supply (Water Quality) (Scotland) Regulations 2001. London: The Stationery Office

20、. NOTE In the event of the regulations being revised, the latest version should apply, but care is advised as regulation numbering might change. 3 Terms and definitions For the purposes of this part of BS 5163, the following terms and definitions apply. 3.1 stem cap device to enable valves of differ

21、ent sizes and stem configurations to be operated by standard operating keys NOTE 1 A stem cap is an operating element. See also BS EN 736-2. NOTE 2 The socket end of operating keys should be dimensionally in accordance with BS 336 up to DN 300.BS 5163-1:2004 2 BSI 23 December 2004 3.2 ring key and b

22、ar operating key with a socket at its lower end, which engages with the stem cap on the valve or hydrant, and a ring at the upper end to enable a bar to be inserted, which can then be used manually to turn the valve stem NOTE A ring key and bar is illustrated in Figure 1. 3.3 T key operating key sim

23、ilar to a ring key and bar but having a fixed short-length upper bar attached centrally at right angles to the shaft NOTE A T key is illustrated in Figure 2. 3.4 mST minimum strength torque as specified in BS EN 1074-1 4 Preferred features 4.1 Type of valves Gate valves complying with BS EN 1074-2 c

24、an be operated by various means, e.g. T key, handwheel or actuator, through a gearbox, or by ring key and bar. See Figure 1 and Figure 2 for examples. For UK purposes it is usual practice to use valves delivered with a stem cap suitable for use with a ring key and bar. NOTE This sketch is diagrammat

25、ic only. Figure 1 Typical operator Ring key and barBS 5163-1:2004 BSI 23 December 2004 3 4.2 Dimensions and tolerances 4.2.1 Face-to-face dimensions and tolerances Where valves rated PFA 10 and PFA 16 are used, then the face-to-face dimensions and tolerances should be as specified in Table 3, Basic

26、Series 3 in BS EN 558-1:1996. Where valves rated PFA 25 are used, the face-to-face dimensions and tolerances should be as specified in Table 3, Basic Series 19 in BS EN 558-1:1996. For valve sizes above DN 1000, the face-to-face dimensions should be by agreement between purchaser and manufacturer. 4

27、.2.2 Body flange dimensions Valves should comply with BS EN 1092-2, as is required by BS EN 1074-1. However, where valves are required to be installed in existing pipework installations, then the body flange details may be by agreement between purchaser and manufacturer. 4.2.3 Maximum height dimensi

28、ons In order to accommodate the typical depths of burial of pipelines in the UK, valves should be selected with consideration of a maximum overall height dimension as given in Table 1 and illustrated in Figure 3. 4.3 Operational features 4.3.1 Features It is recommended that only valves with the fol

29、lowing features should be used: a) inside screw stem (non-rising) with a stem thread lead of 12 mm; b) wedge type obturator; c) clearway bores as defined in BS EN 736-3. NOTE This sketch is diagrammatic only. Figure 2 Typical operator T keyBS 5163-1:2004 4 BSI 23 December 2004 Table 1 Maximum overal

30、l heights (see Figure 3) Nominal size Centre of waterway to top of stem cap (max), A DN mm 50 460 65 485 80 530 100 590 125 640 150 695 200 830 250 940 300 1 030 350 1 210 400 1 290 450 1 390 500 1 470 600 1 710 For sizes of valves greater than DN 600 overall heights should be agreed between purchas

31、er and manufacturer. NOTE The heights stated do not take into account any additional height caused by the fitting of a gearbox, handwheel or actuator. Key A Maximum overall height (see Table 1) Figure 3 Maximum overall height ABS 5163-1:2004 BSI 23 December 2004 5 4.3.2 Stem sealing When the seal is

32、 a toroidal sealing ring or a lip seal device, it is recommended that: a) the user selects valves where at least two such seals are used; b) in all designs of seals, except stuffing boxes and glands, an additional device should be positioned above the seals to prevent the ingress of foreign matter;

33、c) stem seals should be capable of being replaced, with the valve under pressure and in the fully open position. NOTE The user is warned that there might be some leakage to atmosphere during this operation. 4.3.3 Stem caps Unless otherwise specified, valves should be selected with stem caps conformi

34、ng to BS 5163-2. 4.3.4 Actuator operations For valves operated by electric actuator or gearbox, users should ensure that the dimensions of valve mating details comply with BS EN ISO 5210. When gearboxes or powered actuators are fitted to valves, it is essential that care be taken in design and opera

35、tion to ensure the torque input to the valve stem cannot exceed the mST of the valve. 4.4 Coatings Users should select valves in which all cast iron components exposed to the external environment or to the water contained in the valve are fully coated to provide protection against corrosion. The use

36、r should ensure that where polymeric barrier coatings are used they are in accordance with WIS 4-52-01/02. Vulcanized or bonded elastomer acting as a seating medium should provide an equivalent level of protection against corrosion. Such elastomers should comply with BS EN 681-1:1996 Type WA. The us

37、er should also ensure that where areas of cast iron are threaded and not corrosion protected as a consequence, then that surface area has either been isolated from the atmosphere and the water in the valve by seals or suitable sealing compounds, or a suitable corrosion protection has been applied to

38、 the surface of the iron. Areas of cast iron behind metal trim valve seats should also be similarly protected. 4.5 Materials In support of the requirements for the materials for manufacture of valves (see BS EN 1074-1), it is recommended that users should select valves whose materials comply with th

39、e following. a) Cast irons: BS EN 1503-3. b) Stainless steel: used for manufacturing valve components, should have a minimum 13 % chrome content. c) Copper alloys: 1) If ingots or castings are used, BS EN 1982:1999. NOTE The following grades and their equivalents have traditionally been used for a c

40、onsiderable time. Other alloys may be used with agreement between manufacturer and purchaser. Leaded Gunmetal to BS EN 1982:1999 grade CC491K, CuSn5Zn5Pb5-C (equivalent to BS 1400:1985, LG2). 1) Leaded Gunmetal to BS EN 1982:1999 grade CC492K, CuSn7Zn2Pb3-C (equivalent to BS 1400:1985, LG4). 1) Alum

41、inium Bronze to BS EN 1982:1999 grade CC331G, CuAl10Fe2-C (equivalent to BS 1400:1985, AB1). 1) Aluminium Bronze to BS EN 1982:1999 grade CC333G, CuAl10Fe5Ni5-C (equivalent to BS 1400:1985, AB2). 1) 2) If rod or bar is used, BS EN 12163. 3) If forging stock is used, BS EN 12165. d) Resilient materia

42、ls: BS EN 681-1:1996 Type WA. e) Lubricants should be non-detrimental to other materials with which they might come into contact. 1) BS 1400:1985 has been withdrawn, superseded by BS EN 1982:1999.BS 5163-1:2004 6 BSI 23 December 2004 5 Valves for water intended for human consumption Effect of materi

43、als on water quality When used under the conditions for which they are intended, all materials in contact with or likely to come into contact with water for public supply should be introduced in accordance with the requirements of Regulation 31 of the Water Supply (Water Quality) Regulations 2000 or

44、 Regulation 27 of the Water Supply (Water Quality) (Scotland) Regulations 2001. NOTE This applies pending the introduction of a European Acceptance Scheme (EAS). All materials that are likely to come into contact with water intended for human consumption in the UK should comply with BS EN 1074-1 and

45、, for non-metallic materials including lubricants, the requirements of BS 6920-1. 6 Marking To ensure that a valve is suitable for use with ring key and bar operation it is important that valves are clearly differentiated. Users should therefore select cast-iron valves that have been marked, not onl

46、y with the marking specified by BS EN 1074-1 but also with the number of this code of practice (i.e. BS 5163-1) to indicate their suitability for use with ring key and bar operation. Similarly users should also ensure that seat trim is indicated on the valves, e.g. RES for resilient seated valves an

47、d CF for copper alloy seated valves. 7 Preparation for storage and transport 7.1 If packaging arrangements are to be agreed between manufacturer and purchaser as permitted by BS EN 1074-1, the recommendations in Clause 6 should be taken into account. 7.2 After testing, each valve should be drained o

48、f the test fluid, cleared of any extraneous matter and suitably protected in preparation for storage and transport. 7.3 Valve obturators, except in resilient seated designs, should be in the closed position when despatched to protect the obturator from transport damage. The obturator in resilient se

49、ated valves should be protected from direct ultra-violet light by being fully opened or by the use of protective packaging or end caps. NOTE BS EN 12351 covers end caps.BS 5163-1:2004 BSI 23 December 2004 7 Annex A (normative) Information to be supplied by the purchaser The following information should be agreed between the purchaser and supplier: a) number and year of this British Standard (i.e. BS 5163-1:2004