Specification for 7.5 L WC flushing cisterns

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

31-10-1990

Publisher

British Standards Institution

Committees responsible
Foreword
Specification
Section 1. General
1. Scope
2. Definitions
3. Marking
Section 2. Materials and design
4. General corrosion resistance for components
5. Cistern shells
6. Soft solder
7. Hard solder
8. Flushing apparatus
9. Volume of discharge per flush
10. Rate of flush discharge
11. Water line
12. Spill-over level
13. Warning pipe connections
14. Float operated valves
15. Covers
Section 3. Construction
16. Shell
17. Operating mechanism
18. Flush pipe connection
Section 4. Flush pipes
19. Materials, construction and ends
20. Flush pipes for use with cisterns at high level
21. Flush pipes for use with cisterns at low level
Appendices
A. Options: information to be supplied by the
purchaser
B. Distortion test
C. Front thrust test
D. Flushing apparatus torque test
E. Volume of discharge test
F. Rate of discharge test
G. Warning pipe connection test
H. Dead load test on operating mechanism
Figures
1. Illustration of effective warning water level
2. High level flush pipes
3. Front thrust test apparatus
4. Flushing apparatus stainless steel test spacer
5. Test flush pipe for low level cistern
6. Fluid level sensing device
7. Warning pipe stainless steel test spacer

Requirements for max single flush exposed and consealed WC flushing cisterns with side inlet or bottom inlet supplied with a float operated valve and a valveless siphon for low level, high level and close coupled applications, together with the necessary flush pipes

This British Standard specifies requirements for 7.5 L maximum single flush, exposed and concealed WC flushing cisterns with a side inlet or bottom inlet supplied with a float operated valve, a valveless siphon for high level, low level, and close coupled applications together with the necessary flush pipes.

Information to be supplied by the purchaser at the time of enquiry and/or order is listed in Appendix A.

Requirements for float operated valve assemblies and methods of fixing cisterns are not specified in this standard.

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

Committee	B/503
DevelopmentNote	Supersedes 88/14136 DC (09/2005) Reviewed and confirmed by BSI, December 2012. (11/2012)
DocumentType	Standard
Pages	22
PublisherName	British Standards Institution
Status	Current

BS 6465-3:2006	Sanitary installations Code of practice for the selection, installation and maintenance of sanitary and associated appliances
BS 2456:1990	Specification for floats (plastics) for float operated valves for cold water services
BS 6465-1:1994	Sanitary installations Code of practice for scale of provision, selection and installation of sanitary appliances

BS 2782-11 Method 1104A:1983	Methods of testing plastics. Thermoplastics pipes, fittings and valves Measurement of opacity of thermoplastics pipes and fittings
BS 2456:1990	Specification for floats (plastics) for float operated valves for cold water services
BS 3402:1969	Specification for quality of vitreous china sanitary appliances
BS 2871-1:1971	Specification for copper and copper alloys. Tubes Copper tubes for water, gas and sanitation
BS 1134:1961	Centre-line-average height method for the assessment of surface texture
BS 1212-2:1990	Float operated valves Specification for diaphragm type float operated valves (copper alloy body) (excluding floats)
BS 2782-5:Method 540B:1982	Methods of testing plastics. Optical and colour properties, weathering Methods of exposure to laboratory light sources, (xenon arc lamp, enclosed carbon arc lamp, open-flame carbon arc lamp, fluorescent tube lamps)
BS 6700:1987	Specification for design, installation, testing and maintenance of services supplying water for domestic use within buildings and their curtilages
BS 3830:1973	Specification for vitreous enamelled steel building components
BS 5139:1974	Classification for polypropylene plastics materials for moulding and extrusion
BS 1845:1984	Specification for filler metals for brazing
BS 4127-2:1972	Specification for light gauge stainless steel tubes. Metric units
BS 4781:1990	Specification for pressure-sensitive adhesive plastics labels for permanent use
BS 6323-8:1982	Specification for seamless and welded steel tubes for automobile, mechanical and general engineering purposes Specific requirements for longitudinally welded stainless steel tubes

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BS 7357:1990

Specification for 7.5 L WC flushing cisterns

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