BS 1212-2:1990
Current
The latest, up-to-date edition.
Float operated valves Specification for diaphragm type float operated valves (copper alloy body) (excluding floats)
Hardcopy , PDF
English
06-29-1990
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
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