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BS 7650:1993

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Specification for pressure regulators used in welding, cutting and related processes with compressed gases up to 300 bar
Available format(s)

Hardcopy , PDF

Superseded date

06-15-1998

Language(s)

English

Published date

06-15-1993

Committees responsible
Foreword
Specification
1. Scope
2. References
3. Definitions
4. Classification
5. Design and manufacturing requirements
5.1 Materials
5.2 Filter
5.3 Inlet connections
5.4 Pressure adjusting device
5.5 Relief valve
5.6 Mechanical resistance
5.7 Outlet connections
5.8 Pressure gauges
5.9 Marking of cylinder contents indicators
5.10 Resistance to oxygen ignition (oxygen regulators
     only)
6. Operating requirements
6.1 Gas tightness
6.2 Flow capacity
6.3 Coefficient of pressure increase on closure R
6.4 Irregularity coefficient i
6.5 Relief valve
7. Performance and functional tests
7.1 Test gases
7.2 Accuracy of instrumentation
7.3 Test samples
7.4 Operating criteria
7.5 Ignition test (oxygen regulators only)
7.6 Mechanical strength test
7.7 Safety test
7.8 Internal leakage tests
8. Marking
9. Instructions
Annexes
A. (informative) Nomenclature and technical terms in
     common use
B. (informative) Types and use of regulators
Tables
1. Equipment class
2. Relief valve performance values
3. Test pressures
Figures
1. Dynamic pressure characteristics
2. Example of the apparatus for measuring Qmax. and R
3. Example of the apparatus for determining i
4. Example of the apparatus for the ignition test
5. Connection tube
B.1 Diagrammatic illustration of indirect acting
     regulator
B.2 Diagrammatic illustration of direct acting
     regulator
List of references

Does not apply to regulators for use with liquefied or dissolved gases.

Committee
WEE/18
DevelopmentNote
DRAFT FOR COMMENT 92/72093 DC
DocumentType
Standard
Pages
22
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

BS 341-1:1991 Transportable gas container valves Specification for industrial valves for working pressures up to and including 300 bar
BS EN 562:2003 Gas welding equipment. Pressure gauges used in welding, cutting and allied processes
BS EN 29539:1992 Specification for materials for equipment used in gas welding, cutting and allied processes
BS EN 29090:1992 Specification for gas tightness of equipment for gas welding and allied processes
BS 499-1:1991 Welding terms and symbols Glossary for welding, brazing and thermal cutting
ISO 554:1976 Standard atmospheres for conditioning and/or testing — Specifications

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