BS 7734:1994
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Specification for anaesthetic circle breathing systems
Hardcopy , PDF
07-15-1999
English
02-15-1994
Committees responsible
National foreword
Introduction
Specification
1. Scope
2. Normative references
3. Definitions
4. General requirements
5. Breathing systems either supplied complete or
assembled in accordance with manufacturers'
instruction
6. Adjustable pressure-limiting (APL) valves
7. Circle absorber assemblies
8. Unidirectional valves
9. Pressure-monitoring
10. Location of breathing system components
11. Marking
12. Information to be provided by manufacturer
Annexes
A. (normative) Type test methods
B. (informative) Breathing system classification
Figures
1. Markings for carbon dioxide absorbers and circle
absorber assemblies
A.1 Arrangement of apparatus to test resistance to
flow of APL valves
A.2 Arrangement of apparatus to test for leakage from
APL valves
A.3 Arrangement of apparatus to test for reverse flow
through unidirectional valves
A.4 Arrangement of apparatus to test for opening
pressure of unidirectional valves
B.1 Legend of symbols for breathing attachments used
in figures B.2 and B.3
B.2 Circle system showing position of segments
B.3 Illustration of use of graphical symbols in circle
absorption system
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