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BS 6283-2:1991

Current
Current

The latest, up-to-date edition.

Safety and control devices for use in hot water systems Specifications for temperature relief valves for pressures from 1 bar to 10 bar
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

28-06-1991

Publisher

British Standards Institution

Committees responsible
Foreword
Specification
Section 1. General
1.1 Scope
1.2 Definitions
1.3 Nominal size
1.4 Marking
Section 2. Materials
2.1 General
2.2 Bodies and associated parts
2.3 Sealing and diaphragm materials
2.4 Spring materials
Section 3. Design and construction
3.1 General
3.2 End connections and flow dimensions
3.3 Valve seat attachment
3.4 Guides and moving parts
3.5 Provision for deposits and drainage
3.6 Adjustment
3.7 Springs
3.8 Easing gear
Section 4. Performance
4.1 Production tests
4.2 Type tests
Appendices
A Information to be supplied by the purchaser
B Production tests
C Torque test
D Back pressure test
E Opening and reseating temperature test
F Discharge capacity test
G Water discharge test
H Endurance test
Tables
1 Nominal size of valve
2 Minimum dimensions of flow passages
3 Maximum value of dimension X as shown in figure 1
4 Torque
Figures
1 Typical arrangement of temperature relief valves
2 Test arrangement for opening and reseating
     temperatures
3 Test arrangement for discharge capacity

Design, construction and testing of temperature relief valves of the automatic reseating type, specifically intended for use with and protection of storage water heaters of the unvented type. Does not give recommendations on application or installation of the valves.

This Part of BS 6283 specifies the design, construction and testing requirements for temperature relief valves of the automatic reseating type, of nominal sizes DN 15 to DN 40 for working pressures from 1 bar1) to 10 bar. The valves are intended for the protection of storage heaters of the unvented type that are required to operate at temperatures not normally exceeding 90 °C and not exceeding 100 °C under emergency conditions. However, they may be used for other water applications where appropriate.

This Part of BS 6283 does not cover the application or installation of these valves.

Advice on the information to be supplied by the purchaser is given in Appendix A.

NOTE The titles of the publications referred to in this Part of BS 6283 are listed on the inside back cover.

Committee
B/504
DevelopmentNote
Supersedes 88/11546 DC and BS 6283-2(1982) (09/2005) Reviewed and confirmed by BSI, October 2012. (09/2012)
DocumentType
Standard
Pages
16
PublisherName
British Standards Institution
Status
Current
Supersedes

BS 5412-5:1976 Specification for the performance of draw-off taps with metal bodies for water services Physio-chemical characteristics: materials, coatings
BS 864-5:1990 Capillary and compression tube fittings of copper and copper alloy Specification for compression fittings for polyethylene pipes with outside diameters to BS 5556
BS 2871-1:1971 Specification for copper and copper alloys. Tubes Copper tubes for water, gas and sanitation
BS 2056:1991 Specification for stainless steel wire for mechanical springs
BS 970-4:1970 Specification for wrought steels for mechanical and allied engineering purposes Valve steels
BS 3075:1976 Specification for nickel and nickel alloys: wire
BS 3457:1973 Specification for materials for water tap and stopvalve seat washers
BS 1726-1:1987 Coil springs. Guide for the design of helical compression springs
BS 4781:1990 Specification for pressure-sensitive adhesive plastics labels for permanent use
BS 7206:1990 Specification for unvented hot water storage units and packages
BS 5216:1991 Specification for patented cold drawn steel wire for mechanical springs
BS 4504-3.3:1989 Circular flanges for pipes, valves and fittings (PN designated) Specification for copper alloy and composite flanges

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