Shower valve elbow: problem removing non-return valve.

[chainsaw_masochist]

Anyone have any idea how I might extract these NRVs from their elbows. Cannot seem to achieve this with a whole kit of mini-pliers, screwdriver etc. Would it be worth trying boiling water or WD40? Suggestions very welcome.

Untitled

• chainsaw_masochist
• 19 Jul 2014
• 1

Untitled

• chainsaw_masochist
• 19 Jul 2014
• 1

 

[Dan Robinson]

Why are you wanting to remove them?

 

[chainsaw_masochist]

Because there is minimal flow of hot water and the NRV is (conclusively) not working - not springing at all. There does not appear to be any grit present to have 'jammed' the valve hence the replacement.

 

[steve32]

Break them out with a screwdriver

 

[chainsaw_masochist]

Break them out with a screwdriver

Tried this only to break the top half of the nrv but the bottom half (with the o-ring) remains defiantly in place.

 

[Dan Robinson]

Smack it harder.

 

[jeff the gasman]

Even harder than Dan says

 

[kidgreen61]

Melt 'em
Blow torch?

 

[oldbuffer]

Soak them in limescale remover (Killrock or Ataka 50:50 with very hot water) for half an hour then try again - or indeed they may be working again without removal.

 

[Dan Robinson]

Soak them in limescale remover (Killrock or Ataka 50:50 with very hot water) for half an hour then try again - or indeed they may be working again without removal.

Then twart them some more

 

[chainsaw_masochist]

They're out now and the new ones are in - what a bυgger, though. I ended up using a tiny drill bit to make some holes in the remaining base section of the valves and then 'twisted' the remnants out with a slim chisel.

Thanks for all the advice.