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BS 6759-1:1984

BS 6759-1:1984

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

View Superseded by
superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Safety valves Specification for safety valves for steam and hot water

Available format(s)

Hardcopy , PDF

Superseded date

18-05-2004

Language(s)

English

Published date

29-02-1984

Publisher

British Standards Institution

Foreword
Committees responsible
Specification
Section one. General
1. Scope
2. Definitions
Section two. Material requirements and limitations
3. Pressure containing components
4. Body seat faces and valve disk faces
5. Safety valve springs
6. Bolting for pressure containing joints
Section three. Design and construction
7. General
8. Scantlings
9. Castings
10. Forgings
11. Springs
Section four. Production testing and inspection
12. General
13. Safety precautions
14. Test media
15. Hydraulic test
Section five. Marking
16. Body marking
17. Identification plate
Section six. Performance testing
18. Type testing of safety valves for operating and
     flow characteristics using water, steam, air or
     other gas
19. Tests to determine operating characteristics
20. Tests to determine flow characteristics
21. Determination of coefficient of discharge and
     certified discharge capacity
Section seven. Safety valves for boilers, superheaters,
reheaters and economizers
22. Boilers and superheaters
23. Reheaters and superheaters separated from the
     boiler
24. Safety valves for economizers
25. Operating margins
Appendices
A. Derivation of superheat correction factors
B. Guidance on safety valve mounting
C. Inspection and testing facilities
Tables
1. Helical coil spring materials and mechanical
     properties
2. Minimum duration of hydraulic shell test
3. Values of C relative to values of k
4. Capacity correction factors for back pressure (Kb)
5. Superheat correction factor KSh
Figures
1. Illustration of area definitions
2. Graph for value of constant K, the safety valve
     spring correction factor
3. Compression factor Z as a function of reduced
     pressure pr and reduced temperature Tr

Specifies requirements for safety valves for boiler installations and associated pipework where the steam pressure exceeds 1 bar gauge or, in the case of hot water boilers, where the rating is 44 kW and above.

Committee
PSE/18/6
DevelopmentNote
REPLACES BS 759: PART 2: 1975
DocumentType
Standard
Pages
22
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

Standards Relationship
ISO 4126:1981 Similar to

PD 5500:2000 SPECIFICATION FOR UNFIRED FUSION WELDED PRESSURE VESSELS
03/310868 DC : DRAFT JUNE 2003 BS 6644 - SPECIFICATION FOR INSTALLATION OF GAS-FIRED HOT WATER BOILERS OF RATED INPUTS BETWEEN 70KW (NET) AND 2MW (GROSS) (2ND AND 3RD FAMILY GASES)
BS 2646-1:1988 Autoclaves for sterilization in laboratories Specification for design and construction
BS 2790:1992 Specification for design and manufacture of shell boilers of welded construction
BS 779:1989 Specification for cast iron boilers for central heating and indirect hot water supply (rated output 44 kW and above)
BS 6644:1991 Specification for installation of gas-fired hot water boilers of rated inputs between 60 kW and 2 MW (2nd and 3rd family gases)
BS 1894:1992 Specification for design and manufacture of electric boilers of welded construction
BS 3970-1:1990 Sterilizing and disinfecting equipment for medical products Specification for general requirements
BS 1113:1989 Specification for design and manufacture of water-tube steam generating plant (including superheaters, reheaters and steel tube economizers)
BS 1113:1992 Specification for design and manufacture of water-tube steam generating plant (including superheaters, reheaters and steel tube economizers)
BS 2790:1989 Specification for design and manufacture of shell boilers of welded construction
BS 5258-1:1986 Safety of domestic gas appliances Specification for central heating boilers and circulators
BS 855:1990 Specification for welded steel boilers for central heating and indirect hot water supply (rated output 44 kW to 3 MW)
BS 806:1990 Specification for design and construction of ferrous piping installations for and in connection with land boilers
BS 806:1993 Specification for design and construction of ferrous piping installations for and in connection with land boilers
BS 6644:1990 Specification for installation of gas-fired hot water boilers of rated inputs between 60 kW and 2 MW (2nd and 3rd family gases)
BS 6798:2000 Specification for installation of gas-fired boilers of rated input not exceeding 70 kW net
BS 853-2:1996 Specification for vessels for use in heating systems Tubular heat exchangers and storage vessels for building and industrial services
BS 6759-3:1984 Safety valves Specification for safety valves for process fluids
02/710149 DC : 0 PD 2790 - SPECIFICATION FOR THE DESIGN AND MANUFACTURE OF SHELL BOILERS
BS 5500:1991 Specification for unfired fusion welded pressure vessels
BS 6798:1987 Specification for installation of gas-fired hot water boilers of rated input not exceeding 60 kW
BS 3970-4:1990 Sterilizing and disinfecting equipment for medical products Specification for transportable steam sterilizers for unwrapped instruments and utensils
BS 5258-15:1990 Safety of domestic gas appliances Specification for combination boilers
BS 6739:1986 Code of practice for instrumentation in process control systems: installation design and practice
BS 853(1990) : 1990 AMD 8979 SPECIFICATION FOR VESSELS FOR USE IN HEATING SYSTEMS - CALORIFIERS AND STORAGE VESSELS FOR CENTRAL HEATING AND HOT WATER SUPPLY
BS 853-1(1996) : 1996 SPECIFICATION FOR VESSELS FOR USE IN HEATING SYSTEMS - CALORIFIERS AND STORAGE VESSELS FOR CENTRAL HEATING AND HOT WATER SUPPLY
BS 2745-1:1993 Washer-disinfectors for medical purposes Specification for general requirements
BS 6644:1986 Specification for installation of gas-fired hot water boilers of rated inputs between 60 kW and 2 MW (2nd and 3rd family gases)
BS PAS 33(1999) : 1999 SPECIFICATION FOR THE DESIGN, INSTALLATION AND COMMISSIONING OF GAS FIRED CENTRAL HEATING SYSTEMS IN DOMESTIC PREMISES
BS 759-1:1984 Valves, gauges and other safety fittings for application to boilers and to piping installations for and in connection with boilers Specification for valves, mountings and fittings
BS 2646-1:1993 Autoclaves for sterilization in laboratories Specification for design, construction, safety and performance

ISO 4126:1981 Safety valves — General requirements
BS 1560-2:1970 Circular flanges for pipes, valves and fittings (Class designated) Specification for steel pipe flanges (nominal sizes ½ in to 24 in). Metric dimensions
BS 970-5:1972 Specification for wrought steels in the form of blooms, billets, bars and forgings Carbon and alloy spring steels for the manufacture of hot formed springs
BS 759-1:1984 Valves, gauges and other safety fittings for application to boilers and to piping installations for and in connection with boilers Specification for valves, mountings and fittings
BS 2693-1:1956 Specification for screwed studs General purpose studs
BS 1726-1:1987 Coil springs. Guide for the design of helical compression springs

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Hardcopy - English
PDF - English
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