BS 2767:1991

Committees responsible
Foreword
1 Scope
2 Definitions
3 Designation of valves by size
4 Pressure and temperature ratings
5 Marking
6 Materials and manufacture
7 Design and construction
8 Type tests
9 Routine pressure tests
Appendix A Information to be supplied and requirements to be
           agreed
Appendix B Method of testing the torque strength of the
           handwheel when assembled to the valve
Appendix C Method of testing the torque strength of the union
           nut

Specifies designation, pressure and temperature ratings, materials, design, construction and testing of manual valves. Includes handwheel torque strength test, connections for metric copper tubes, compression type tailpiece connections, plating and draining facility.

This British Standard specifies materials, essential aspects of design, and performance requirements for manually operated copper alloy valves for connection to hot water radiators.

Two types of valve are specified on the basis of their pressure ratings; type 4 with a maximum working pressure of 4 bar¹) and type 10 with a maximum working pressure of 10 bar.

The range of sizes covered is suitable for use with radiators having ½ in, ¾ in, or 1 in female threaded connections in accordance with BS 21.

End connections for connection to the valve of 8, 10, 12, 15, 22 and 28 mm copper tube, and threads for ½, ¾ and 1 in threaded iron pipe are included.

The standard also covers valves with tailpieces, including tailpieces which incorporate a draining facility or an auxiliary valve.

NOTE 1 All pressures given are gauge pressures.

NOTE 2 Figure 1, Figure 2 and Figure 3 are solely for the purpose of showing alternative types, part names and, collectively, some typical variations of detail; they are not intended to influence design.

NOTE 3 Information to be supplied by the purchaser and requirements to be agreed between supplier and purchaser are given in Appendix A.

NOTE 4 The publications referred to in this Standard are listed on the inside back cover.