Each has an isolating valve close to the main, for supplying domestic services, wash-deck arrangements, pre-wetting, magazine spraying and other services.
Inye inokona kwahlukanisa, ukongezela kweenkonzo zasekhaya, ukuhlamba umgangatho wamalungiselelo, ukusitshiza isitoro sezixhobo kunye nezinye iinkonzo.