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BS MA 69:1976
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
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Specification. Ventilator heads
Hardcopy , PDF
01-05-2006
English
27-02-1976
Foreword
Specification
1. Scope
2. References
3. Types
4. Nominal sizes and dimensions
5. Materials
6. Quality of manufacture and finish
7. Tolerances
8. Accessories
9. Inspection
10. Information to be supplied with an enquiry or order
Table
1. Materials
Figures
1. Fixed mushroom ventilator head, type A
2. Adjustable mushroom ventilator head, type B
3. Adjustable mushroom ventilator head, type C
4. Wire mesh grids for mushroom ventilators, types A,
B and C
5. Circular head cowl ventilator, type D
6. Accessories for circular, cowl ventilator head
7. Typical open/closed indicator for mushroom ventilator
head, type C
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