BS 6282-1:1982

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

Sets out characteristics of check valves of nominal size up to and including DN 54 that are suitable for use at pressures up to 10 bar and temperatures up to 90 degrees C when installed in any orientation.