Hi, New to this site so hope this works.
Just removed an old toilet and fitted a new push button cistern one.
i had to re route the supply water pipe over the waste pipe coming out of the back as i had to use a Swan Neck one to line up with waste hole in floor, and the water pipe didnt fit past waste pipe.
I cut the pipe less than a meter away, and fitted a Service valve( NOT Full Bore) i then had ti route pipe over the waste pipe using 3 right angle joins to reach cistern inlet.
After finnishing, it all works ok, but i now here a Wooshing sound from the cold water pipe in the corner of the room whilst it is filling after a flush. Trying to work out whats changed to cause this?, is it the new cistern , which i left the restrictor in as we have quite high pressure, is it not using a Full Bore service valve, is it having 3 right angles in pipe to cistern ?? Any help much appreciated alan