I've just had the toilet replaced and the new (bathstore) cistern 6 litre came with a plastic bottom filling float arrangement.
No waterhammer before, now with this new equilibrium type valve, a large nasty clunk when it shuts off. Bathstore technical very helpful and sent me a torbeck but still equilibrium type and still a nasty clunk.
Found out the plumber did not clip the pipes properly behind the now completed tiling etc, so apart from breaking this out... (very annoyed...)
Previous cistern old proper ball valve, never any problems, and no clunk or waterhammer because of a nice slow close...(not an equilibrium, in type valve). Have got pretty high mains pressure.
Plumber tried an Opella standard bottom entry old type ball valve but 1-2" too tall for the cistern! Googled to death to try to find an adjustable height/short alternative to the Opella, no luck.
Any advice at all - any explanations anywhere re equilibrium vs old style ball valves? Why change something that works perfectly well with something that has an instant shutoff which will cause waterhammer (regardless of whether pipes are firmly clipped - the surge pressure is still there you just don't get the pipes thumping but I assume you still get a nasty clunk).
thanks for listening!!
No waterhammer before, now with this new equilibrium type valve, a large nasty clunk when it shuts off. Bathstore technical very helpful and sent me a torbeck but still equilibrium type and still a nasty clunk.
Found out the plumber did not clip the pipes properly behind the now completed tiling etc, so apart from breaking this out... (very annoyed...)
Previous cistern old proper ball valve, never any problems, and no clunk or waterhammer because of a nice slow close...(not an equilibrium, in type valve). Have got pretty high mains pressure.
Plumber tried an Opella standard bottom entry old type ball valve but 1-2" too tall for the cistern! Googled to death to try to find an adjustable height/short alternative to the Opella, no luck.
Any advice at all - any explanations anywhere re equilibrium vs old style ball valves? Why change something that works perfectly well with something that has an instant shutoff which will cause waterhammer (regardless of whether pipes are firmly clipped - the surge pressure is still there you just don't get the pipes thumping but I assume you still get a nasty clunk).
thanks for listening!!