BS 6282-1:1982
Superseded
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Devices with moving parts for the prevention of contamination of water by backflow Specification for check valves of nominal size up to and including DN 54
Hardcopy , PDF
30-11-2008
English
30-11-1982
Foreword
Cooperating organizations
Specification
Section one. General
1 Scope
2 Definitions
3 Nominal size
4 Marking
Section two. Materials and design
5 Materials
6 End connections
Section three. Performance
7 Order of tests
8 Test 1: high velocity test
9 Test 2: pressure differential required to open the
valve
10 Test 3: pressure tightness under a low downstream
pressure
11 Test 4: pressure tightness under a high downstream
pressure
12 Test 5: verification that the valve has not jammed
as the results of the application of a
pressure of 16 bar during test 4
13 Test 6: resistance of the valve to a bending moment
14 Test 7: repeat of tests 2 to 5 with the bending
moment removed
15 Test 8: strength of check valve body
16 Test 9: endurance test
Section four. Instructions
17 Instructions for installation and use
Appendix
A Methods of test
Tables
1 Nominal size
2 Bending moments for body bending test
Figure
1 Test apparatus
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