Stop Valve Key
primary flow
Cold feed
primary return
Cold feed
primary flow
I believe that an isolator should only be used to isolate supplies that are not under load, while a switch fuse can isolate the supply that the fuse protects. A fused switch can isolate a three phase supply where a switch fuse might not in fault conditions.This is because three phase faults can occur with only one phase going down and larger currents occurring ?? ian malone.
uses of power failure alarm
Isolate it from the water supply then replace the defective valve
Power booster failure or vacuum supply to booster failure.
One days supply
It means to shut off the water feed to the washing machine.
low cost