When the water in the tank is used its level goes down and so does the ball and arm.
Water tank in attic constantly filling.
This movement turns the cold water feed on so the tank refills.
In some cases the sediment build up can reach a point where flushing the tank is no longer possible and may cause your tank to leak.
The other things could be that the heating itself is expanding too much and overflowing.
So you will still have a small tank in the attic to feed the heating system and to allow for expansion.
Reducing the flow into the house from the main stop cock outside might help.
Hot water expands and requires relief.
However some homeowners choose to wait for their heater to fail.
We always had some noise with the old valve but i must agree this is much louder.
Other things to consider include a constantly flowing toilet.
The maximum water level in the tank should be about one inch below the overflow pipe.
As the water level rises the ball rises to switch the water feed off again when the tank is full.
The valve is a type 2 high pressure.
Bought a new valve and ballcock and installed problem was still continuing.
The ballvalve in it should be replaced if it s dripping.
It wouldn t be pressurised then.
The evaporator will then not operate properly and the humidity level will be higher in your home and in the air handler.
It is doing what it is supposed to do.
When this is the situation your best move is to purchase a new water heater.
I recently replaced the ball valve on my cold water tank in the loft but ever since then my wife has complained about the loud whooshing noise as the cistern fills.
Does it always drip or only when the heating is on.
You may have an expansion tank to handle this or you just have an open vent that runs up and fills into the cold water tank in the attic.
There may be a valve outside the tank near the ballcock valve but otherwise you will have to locate the stopcock it is often under the sink in the kitchen and use this to turn off the water supply to the entire house.
As this water leaves the cylinder cold water flows into the bottom of it from the cold tank.
To replace the ballcock valve you must first turn off your mains supply to your attic tank.
One is that the evaporator is filled with debris like hair dirt or dust.
