BS 7357:1990
Current
The latest, up-to-date edition.
Specification for 7.5 L WC flushing cisterns
Hardcopy , PDF
English
31-10-1990
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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
| 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
|
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.
| 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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