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BSI
BS 1212-2:1990

BS 1212-2:1990

Current

Current

The latest, up-to-date edition.

Float operated valves Specification for diaphragm type float operated valves (copper alloy body) (excluding floats)

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

29-06-1990

Publisher

British Standards Institution

Committees responsible
Foreword
Section 1. General
1 Scope
2 Definition
3 Designation for ordering
4 Marking
Section 2. Materials
5 Quality and finish
6 Plastics
7 Castings
8 Hot stampings
9 Mouldings
10 Machining
Section 3. Design, construction and dimensions
11 General
12 Screw threads
13 Inlet connection
14 Backnuts
15 Bodies
16 Body coupling nuts
17 Backplate nuts
18 Backplates
19 Backplate plungers
20 Seats
21 Diaphragms
22 Levers
23 Float adjusters and thumb screws
24 Split cotter pins
25 Discharge arrangement
Section 4. Performance
26 Hydraulic pressure and shut-off
27 Backnut distortion
28 Backflow prevention
29 Flow
30 Hydraulic pressure on discharge arrangement
Appendix A - Method of test for shut-off when assembled with
             appropriate float
Appendix B - Method of test for distortion of size [1/2] plastics
             backnuts
Appendix C - Method of test for backflow prevention
Appendix D - Method of test for flow
Appendix E - Method of test for effect of hydraulic pressure on
             discharge arrangement
Publications referred to

Specifies workmanship, dimensions and performance requirements for diaphragm type valves of nominal size 3/8 and 1/2, intended for use with floats complying with the requirements of BS 1968 and BS 2456.

This Part of BS 1212 specifies materials, dimensions, tolerances and performance requirements for diaphragm type float operated valves (copper alloy body) of nominal sizes ⅜ and ½ with seat numbers 3, 5, 6 and 9 intended for use with floats complying with BS 1968 and BS 2456.

NOTE 1 The nominal sizes correspond with the pipe size of the thread on the inlet shank as specified in BS 2779. The nominal size ⅜ is formed by making a special inlet on the size ½.

NOTE 2 The titles of the publications referred to in this standard are listed on the inside back cover.

Committee
B/504
DevelopmentNote
Supersedes 83/11865 DC and BS 1212-2(1970). (06/2005) Reviewed and confirmed by BSI, March 2013. (03/2013)
DocumentType
Standard
Pages
28
PublisherName
British Standards Institution
Status
Current
Supersedes

EN 997:2012+A1:2015 WC pans and WC suites with integral trap
UNE-EN 997:2013 WC pans and WC suites with integral trap
EN 14055:2010+A1:2015 WC and urinal flushing cisterns
DIN EN 997:2015-09 WC PANS AND WC SUITES WITH INTEGRAL TRAP
I.S. EN 14055:2010 WC AND URINAL FLUSHING CISTERNS
DIN EN 14055:2015-09 WC AND URINAL FLUSHING CISTERNS
BS 6465-3:2006 Sanitary installations Code of practice for the selection, installation and maintenance of sanitary and associated appliances
BS 5546:2010 Specification for installation and maintenance of gas-fired water-heating appliances of rated input not exceeding 70 kW net
BS 7357:1990 Specification for 7.5 L WC flushing cisterns
BS 7491-1:1991 Glass fibre reinforced plastics cisterns for cold water storage Specification for one-piece cisterns of capacity up to 500 L
BS 5503-3:1990 Vitreous china washdown WC pans with horizontal outlet Specification for WC pans with horizontal outlet for use with 7.5 L maximum flush capacity cisterns
BS 5546:2000 Specification for installation of hot water supplies for domestic purposes, using gas-fired appliances of rated input not exceeding 70 kW
BS 7491-2:1992 Glass fibre reinforced plastics cisterns for cold water storage Specification for one-piece cisterns of nominal capacity from 500 L to 25000 L
BS 6644:1991 Specification for installation of gas-fired hot water boilers of rated inputs between 60 kW and 2 MW (2nd and 3rd family gases)
BS 5504-4:1990 Wall hung WC pan Specification for wall hung WC pans for use with 7.5 L maximum flush capacity cisterns
BS 6644(2005) : 2005 SPECIFICATION FOR INSTALLATION OF GAS-FIRED HOT WATER BOILERS OF RATED INPUTS BETWEEN 70 KW (NET) AND 1.8 MW (NET) (2ND AND 3RD FAMILY GASES)
BS EN 997 : 2012 WC PANS AND WC SUITES WITH INTEGRAL TRAP
BS 5449:1990 Specification for forced circulation hot water central heating systems for domestic premises
BS 7162:1990 Specification for waste water fittings on yachts
BS EN 14055 : 2010 WC AND URINAL FLUSHING CISTERNS
BS 6644:2011 Specification for the installation and maintenance of gas-fired hot water boilers of rated inputs between 70 kW (net) and 1.8 MW (net) (2nd and 3rd family gases)
BS 2456:1990 Specification for floats (plastics) for float operated valves for cold water services
BS 6700:1997 Specification for design, installation, testing and maintenance of services supplying water for domestic use within buildings and their curtilages
BS 4213:2004 Cisterns for domestic use. Cold water storage and combined feed and expansion (thermoplastic) cisterns up to 500 l. Specification
BS 3445-1:1992 Agricultural water troughs and water fittings Specification for water trough bodies, service boxes and water supply system
BS 4213:1991 Specification for cold water storage and combined feed and expansion cisterns (polyolefin or olefin copolymer) up to 500 L capacity used for domestic purposes
BS 5410-2:2013 Code of practice for oil firing Installations over 45 kW output capacity for space heating, hot water and steam supply services
BS 6700(2006) : 2006 DESIGN, INSTALLATION, TESTING AND MAINTENANCE OF SERVICES SUPPLYING WATER FOR DOMESTIC USE WITHIN BUILDINGS AND THEIR CURTILAGES - SPECIFICATION
UNE-EN 14055:2011 WC and urinal flushing cisterns

BS 1574:1994 Specification for split pins (inch series)
BS 2456:1990 Specification for floats (plastics) for float operated valves for cold water services
BS 2871-1:1971 Specification for copper and copper alloys. Tubes Copper tubes for water, gas and sanitation
BS 2782-3 Method 365B:1981 Methods of testing plastics. Mechanical properties Determination of indentation hardness by means of a durometer (Shore hardness)
BS 1134:1961 Centre-line-average height method for the assessment of surface texture
BS 1968:1953 Specification for floats for ballvalves (copper)
BS 3964:1980 Specification for flexible vulcanized fibre sheets
BS 970-4:1970 Specification for wrought steels for mechanical and allied engineering purposes Valve steels
BS 903-A26:1969 Physical testing of rubber Determination of hardness
BS 1212-3:1979 Specification for float operated valves (excluding floats). Diaphragm type (plastics body) for cold water services
BS 3885:1965 Tolerances for hot brass stampings

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Hardcopy - English
PDF - English
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