I have a real problem with a thermostatic shower bar which refuses to stop dripping. I replaced the washer in the on/off valve but still the drip. I then replaced the complete valve assembly but again no cure for the drip. I therefore assumed there must be damage to the valve seat so spent £125 on a new Aqualisa thermostatic shower bar. Just fitted it and unbelievably there is still a drip even with the the tap turned hard off. All I can think of is that the water pressure is too high and is forcing the valve back open slightly - is this possible? The house has a mains pressure water system with an unvented hot tank.
Any help or advice would much appreciated.
Any help or advice would much appreciated.