I rencently fitted a power shower. Realising I needed a lot more cold water than I had in my header tank, I fitted a supplimentary cold tank to feed the pump above the hot tank in may airing cupboard.
Although every thing is actually working fine, I cannot stop the tank from overflowing. I have fitted 3 ball cocks of various different types and manufacturers all to no avail. I noticed that when the tank fills up and then goes into over flow the ball cock assembly distorts the sides of the plastic tank and so remedied this with a brass and wood assembly external to the tank. The valve now remains horizontal through out. The valve however still leaks. Well I say it leaks, there is no visable signs of a drip but it still takes less than 12 hours to overflow the tank, I am estimating this to be about 5-7 gallons at least, I have even tried to reduce the water presure by turning the external shut off valve from the mains by 45 degress or 50%. Just for good measure I fitted a bigger ball (Which does not have a hole in it!!! Not that the old one did either). I have tried bending the arm to shut off the valve earlier as well.
I have been told that these things do suffer from the tiniest specs of debris so have been very carefull not to get any crap in the valve and where there is a rubber membrain have been carefull not to over tighten and avoid pin holes in the rubber.
I am not a plumber, hence the post, but I am sure this is not rocket science. Although, using a little maths...I have stood and watched the valve with a dry try beneath for at least 10 minutes and seen no drips. If I take a drip and multiply it by 11 minutes and then by 12 hours it does not come to 5-7 gallons of water.
Unless any one has any theories I am going to assume for now that the only other possibility is that warm water from the tank is being drawn back up through the shower mixer into the cold tank. But even my limited understanding of physics tells me this is more like science fiction fact.
Please help
Desparate!!!!!!
Although every thing is actually working fine, I cannot stop the tank from overflowing. I have fitted 3 ball cocks of various different types and manufacturers all to no avail. I noticed that when the tank fills up and then goes into over flow the ball cock assembly distorts the sides of the plastic tank and so remedied this with a brass and wood assembly external to the tank. The valve now remains horizontal through out. The valve however still leaks. Well I say it leaks, there is no visable signs of a drip but it still takes less than 12 hours to overflow the tank, I am estimating this to be about 5-7 gallons at least, I have even tried to reduce the water presure by turning the external shut off valve from the mains by 45 degress or 50%. Just for good measure I fitted a bigger ball (Which does not have a hole in it!!! Not that the old one did either). I have tried bending the arm to shut off the valve earlier as well.
I have been told that these things do suffer from the tiniest specs of debris so have been very carefull not to get any crap in the valve and where there is a rubber membrain have been carefull not to over tighten and avoid pin holes in the rubber.
I am not a plumber, hence the post, but I am sure this is not rocket science. Although, using a little maths...I have stood and watched the valve with a dry try beneath for at least 10 minutes and seen no drips. If I take a drip and multiply it by 11 minutes and then by 12 hours it does not come to 5-7 gallons of water.
Unless any one has any theories I am going to assume for now that the only other possibility is that warm water from the tank is being drawn back up through the shower mixer into the cold tank. But even my limited understanding of physics tells me this is more like science fiction fact.
Please help
Desparate!!!!!!