Sorry guys
No mixers, power shower installed but this takes cold water from the storage tank. Knew this might be risky with a primatic tank but it has been fine for over 18 months. Central heating has always been pumped and is set to slowest speed. Water is i bit dirty but only for a short while after the full drain down. Sort of expected this. If the only feed is through the cold storage tank, and the ballcock has shut off how can the tank possibly fill? the ball cock shuts off with the tank only half full so the amount of water that is rising up the filler is substantial. It wll overflow over night so i reckon about 5 - 6 gallons Kind of defies the laws of physics. it aint the money or the time to replace that is the problem it is just a case of wanting to know why or how this is happening.
No mixers, power shower installed but this takes cold water from the storage tank. Knew this might be risky with a primatic tank but it has been fine for over 18 months. Central heating has always been pumped and is set to slowest speed. Water is i bit dirty but only for a short while after the full drain down. Sort of expected this. If the only feed is through the cold storage tank, and the ballcock has shut off how can the tank possibly fill? the ball cock shuts off with the tank only half full so the amount of water that is rising up the filler is substantial. It wll overflow over night so i reckon about 5 - 6 gallons Kind of defies the laws of physics. it aint the money or the time to replace that is the problem it is just a case of wanting to know why or how this is happening.