BS 1212-4:1991
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Float operated valves Specification for compact type float operated valves for WC flushing cisterns (including floats)
Hardcopy , PDF
29-02-2016
English
31-10-1991
Committees responsible
Foreword
Section 1. General
1 Scope
2 Definitions
3 Designation for ordering purposes
4 Marking
Section 2. Materials
5 General
6 Effect of materials on water quality
7 Plastics
8 Metals
9 Workmanship
Section 3. Design, construction and dimensions
10 General dimensional requirements
11 Inlet connections
12 Backnuts
13 Float adjustment
14 Discharge arrangements
Section 4. Performance
15 Inlet shank and backnuts distortion
16 Hydraulic pressure
17 Backflow
18 Flow
19 Endurance
20 Float
Appendix A - Distortion test for backnuts and inlet shanks
Appendix B - Shut-off pressure and lever deflection test
Appendix C - Dynamic pressure test
Appendix D - Method of test for backflow prevention
Appendix E - Flow test
Appendix F - Endurance test
Appendix G - Cold embrittlement test
Publication(s) referred to
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