BS 6281-1:1982

Заменен

Devices without moving parts for the prevention of contamination of water by backflow., Specification for type A air gaps — 4 стр.

Заменен на

BS 6281-1:1992

ICS

13.060.20 Drinking water / Питьевая вода

23.060.01 Valves in general / Клапаны в целом

91.140.60 Water. Including water meters in buildings / Системы водоснабжения. Включая счетчики воды в зданиях