Flomasta Bottom Entry Fill Valve won't stop filling

[Reggie]

Hi all. I'm having issues with the Flomasta bottom-entry fill valve in a toilet; the 'float' comes up but doesn't have any effect, it simply won't stop filling, leading to water constantly flowing down the overflow. The cistern is in a sealed unit so without ripping the whole thing apart is only accessible from the top. Does anyone have any ideas how this could be fixed / changed without having to rip the whole unit apart to install a new valve?

Thanks.

Valve as below:

https://www.NoLinkingToThis/p/flomasta-bottom-entry-fill-valve/5527f

 

[Basher]

Apparently the top/head is removable (see end of video below), assuming the clip you need to remove is accessible, and that you have space to rotate the head part - maybe using the 'slide upwards' feature would give more access?

 

[Deleted member 120897]

Have you ensured nothing has come off and the float isn’t catching on the cistern?

 

[Reggie]

Have you ensured nothing has come off and the float isn’t catching on the cistern?

Nothing has come off and there's nothing catching, no. The float comes up but has no effect and just gets submerged as it's below the level of the overflow.

 

[Reggie]

Apparently the top/head is removable (see end of video below), assuming the clip you need to remove is accessible, and that you have space to rotate the head part - maybe using the 'slide upwards' feature would give more access?

Great that's helpful thanks! It's quite awkward to get at even with the valve slid up to its max height, but I'll give it a go. Hopefully just an ineffective seal underneath the head preventing it from shutting off when the float raises.

 

[JCplumb]

I wouldn't bother trying to service a valve that is so cheap, just buy a new one and replace the whole valve. The video shows how the valve moves up and down on the inlet shaft, you can just pull it off (there's a little bit of resistance when you get to the top) and put the valve from the new one on there.