Devices without moving parts for the prevention of contamination of water by backflow : part - 3 : specification for pipe interrupters of nominal size up to and including DN 42
Devices without moving parts for the prevention of contamination of water by backflow : part - 3 : specification for pipe interrupters of nominal size up to and including DN 42
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- London BSI 1982
- 4 p.
- BSI 6281 : part - 3 : 1982 .
DBSI 6281 : part - 3 : 1982
DBSI 6281 : part - 3 : 1982