Arising from this topic over in electrics, can anyone tell me the purpose of this setup?
When the red knob is twisted, mains pressure cold water goes through the trap. Is this purely a device for unblocking? Seems a good idea if a little odd - certainly never seen it before?
When the red knob is twisted, mains pressure cold water goes through the trap. Is this purely a device for unblocking? Seems a good idea if a little odd - certainly never seen it before?