SANS 1808-35-2010 Water supply and distribution system components Part 35 Electronically operated taps and valves《供水及分配系统元件 第35部分:自动感应水龙头和阀门》.pdf
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1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-23571-0 SANS 1808-35:2010Edition 1.2SOUTH AFRICAN NATIONAL STANDARD Water supply and distribution system components Part 35: Electronicall
4、y operated taps and valves Published by SABS Standards Division 1 Dr Lategan Road Groenkloof Private Bag X191 Pretoria 0001Tel: +27 12 428 7911 Fax: +27 12 344 1568 www.sabs.co.za SABS SANS 1808-35:2010 Edition 1.2 Table of changes Change No. Date Scope Amdt 1 2004 Amended to update the list of part
5、s in the foreword, to remove reference to the certification mark, to update referenced standards, to redefine “acceptable“ and to delete reference to an agreement between the manufacturer and purchaser regarding the method of operation and environmental protection of the unit. Amdt 2 2010 Amended to
6、 update the reference to the national regulatory authority and to move it to the foreword, and to update the list of parts in the foreword. Foreword This South African standard was approved by National Committee SABS SC 138G, Water and sanitation Equipment and systems Plumbing components, in accorda
7、nce with procedures of the SABS Standards Division, in compliance with annex 3 of the WTO/TBT agreement. This document was published in April 2010. This document supersedes SANS 1808-35:2004 (edition 1.1). A vertical line in the margin shows where the text has been technically modified by amendment
8、No. 2. A reference is made in 4.4 to the “relevant national regulatory authority”. In South Africa this means a) the compulsory specification for electrical and electronic appliances (as published by Government Notice No. 89 (Government Gazette No. 31844) of 6 February 2009); b) the radio regulation
9、s of the Ministry of Telecommunications; and c) the Association of Municipal Electricity Undertakings (Southern Africa). Amdt 2 SANS 1808 consists of the following parts, under the general title Water supply and distribution system components: Part 2: Metallic compression type pipe couplings. Part 5
10、: Flexible connectors. Part 8: Tap converters (copper alloy bodies). Amdt 1 Part 9: Metering taps and valves (metallic bodies). Part 10: Copper alloy check valves (spring-loaded). Part 13: Diaphragm valves. Amdt 1 Part 15: Mechanical backflow-prevention devices. Amdt 1 Part 16: Drinking fountain tap
11、s. Part 18: PVC-U gate valves. SANS 1808-35:2010 Edition 1.2 1 Foreword (concluded) Part 24: Gas-operated water heaters. Part 30: Laboratory water taps. Part 31: Automatic control valves. Part 32: Float valves (equilibrium type). Part 35: Electronically operated taps and valves. Part 37: Single-cont
12、rol mixer taps (plastics). Part 44: Pipe saddles. Part 45: Pipe repair clamps. Part 53: Drain cocks for hot-water storage containers. Part 58: In-line strainers. Part 66: Demand type water taps. Part 85: Oriented polyvinyl chloride (PVC-O) pressure pipes for underground use. Amdt 1; amdt 2 Annex A f
13、orms an integral part of this document. Annexes B and C are for information only. SANS 1808-35:2010 Edition 1.2 2 Contents Page Foreword 1 Scope 3 2 Normative references 3 3 Definitions . 3 4 Requirements 4 5 Inspection and methods of test. 6 5.1 Inspection 6 5.2 Performance test. 6 5.3 Test for dez
14、incification resistance. 7 6 Marking . 7 Annexes A Note to purchasers 8 B Quality verification of electronically operated taps and valves . 8 C Bibliography 9 SANS 1808-35:2010 Edition 1.2 3 Water supply and distribution system components Part 35: Electronically operated taps and valves 1 Scope This
15、 part of SANS 1808 specifies requirements for electronically operated taps and valves of size up to 32 mm, for use in hot-water and cold-water systems at a working pressure of up to 600 kPa. 2 Normative references The following standards contain provisions which, through reference in this text, cons
16、titute provisions of this part of SANS 1808. All standards are subject to revision and, since any reference to a standard is deemed to be a reference to the latest edition of that standard, parties to agreements based on this part of SANS 1808 are encouraged to take steps to ensure the use of the mo
17、st recent editions of the standards indicated below. Information on currently valid national and international standards can be obtained from the SABS Standards Division. SANS 135/ISO 1456, Metallic coatings Electrodeposited coatings of nickel plus chromium and of copper plus nickel plus chromium. S
18、ANS 226, Water taps (metallic bodies). SANS 1067-1, Copper-based fittings for copper tubes Part 1: Compression fittings. SANS 1067-2, Copper-based fittings for copper tubes Part 2: Capillary solder fittings. SANS 1109-1/ISO 7-1, Pipe threads where pressure-tight joints are made on the threads Part 1
19、: Dimensions, tolerances and designation. SANS 6509/ISO 6509, Corrosion of metals and alloys Determination of dezincification resistance of brass. 3 Definitions For the purposes of this part of SANS 1808, the following definitions apply: 3.1 acceptable acceptable to the authorities administering thi
20、s standard Amdt 1 SANS 1808-35:2010 Edition 1.2 4 3.2 agreed agreed upon between the manufacturer and the purchaser 3.3 unit a tap or valve, as appropriate 4 Requirements 4.1 Materials 4.1.1 Plastics materials The type and quality of the material of a plastics component part shall be such as to ensu
21、re a) the acceptable performance and durability of the component under normal operating conditions, and b) that, when the component is subjected to a temperature of 150 C 5 C in an air-circulating oven for 60 min 5 min, there is no sign of blistering of the material or weld-line splitting of the com
22、ponent. Any damage around the injection point shall not have penetrated to a depth of more than 50 % of the thickness of the material at that point. 4.1.2 Metallic materials Metallic materials that are intended to come into contact with water during operation shall be a) a copper alloy that, when te
23、sted in accordance with 5.3, shows no individual penetration reading that exceeds 250 m, two samples being taken from each cast component (one from the thinnest part and the other from the thickest part) and one sample from every other component, or b) a stainless steel of an acceptable grade. Amdt
24、1 4.2 Performance requirements 4.2.1 Working pressure rating The design pressure rating of the unit shall be such that the unit can tolerate a working pressure of up to 600 kPa, and when the unit is tested in accordance with 5.2.2.1, there shall be no leakage at the seat. 4.2.2 Method of operation T
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