Toilet cistern problem

[DavidFrancis]

Not done much plumbing stuff before and have a problem with the fill valve. The previous valve was so old it broke-up as I tried to replace an O-ring.  The old valve stem has a lean on it - see picture - and has a metal arm. This enabled it to fit beside the siphon and for the arm to reach over the siphon.

 

I bought a new fill valve but the bottom entry ones all seem to have a plastic arm and this now catches on the siphon and won't operate properly - see picture.  This is in part because the back of the cistern now pushes the valve body out, when the "fat" part of the old valve body used to sit in the wider section of the cistern at the side.

 

Has any one else encountered this problem, or do I have an unusually shaped cistern?

[kommando]

Look for this type called a Torbeck which I have been using for years with no issues, if I had the one you have then I would have the same issue.

 

 

Edited August 18, 2022 by kommando
added Torbeck

[Nickfromwales]

 

That has markers where you cut it shorter  Just have it so it slightly stands off the cistern wall, but it’s there to offer opposing force when the float rises so is a functional part. 

Edited August 18, 2022 by Nickfromwales

[Nickfromwales]

+1 to Torbecks, plus they fill silently. 

[DavidFrancis]

Thanks for the answers. Bought a Torbecks and got it to fit (just) after cutting down the spindle for the flushing lever. Thought the valve was broken at first as lifting the float lever doesn't have an immediate effect. Didn't realise it needed to build a vacuum.

 

Just got a leak to fix now.