Maurice Batey wrote:

That's the bit I don't undertstand. Surely the Fluidmaster can't be
mounted on the end of a flexible pipe?
Did you mean perhaps a flexible pipe from the outside, terminating
just inside the tank?


The valve isn't usually "mounted" on any pipe, but supported by the
cistern. There is a hole in the bottom of the cistern (once the old
valve is removed). The new valve drops into this hole, then a nut goes
onto the bottom end and tightens against the base of the cistern. The
valve is now fixed in place, and the cistern watertight, but no water
supply is connected.
Then a tap connector goes onto the bottom of the valve. If the old
valve had a tap connector on the end of rigid pipe, it will only fit
if the new valve is exactly the same length. If not, the easiest way
to deal with it is to cut off the tap connector and a bit of the supply
pipe, then attach a flexible tap connector.

Mike