BS 6755-2:1987
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Hardcopy , PDF
12-11-2004
English
31-07-1987
Foreword
Committees responsible
Section one. General
1. Scope
2. Definitions
Section two. Conditions of test
3. Direction and conditions for valves to be tested
4. Pressure relief provision
Section three. Performance
5. General
6. Through-seat leakage (high test pressure) during
burn period
7. External leakage (high test pressure) during burn
and cool-down periods
8. Through-seat leakage (low test pressure) after
cool-down
9. External leakage (low test pressure) after cool-
down
10. Operability
11. External leakage in fully open position
Appendices
A. Fire test method
B. Qualification of valves by representative size and
pressure rating
C. Additional information to be included in the test
report
Tables
1. Test pressures for PN and Class rated valves
2. Other valves qualified according to size
3. Other valves qualified by PN rating
4. Other valves qualified by Class rating
Figures
1. Recommended systems for fire type-testing of valves
(schematic)
2. Calorimeter cube design and dimensions
3. Location of calorimeter cubes and flame environment
thermocouples for DN 150 (NPS 6) and smaller size
valves
4. Location of calorimeter cubes and flame environment
thermocouples for valves larger than DN 150 (NPS 6)
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