Replacing toilet fill valve and metal fitting underneath....

benson1980

Hi all,
I need to replace my toilet fill valve so I isolated the water, and removed the valve no problem. However, the bit to where the fill valve thread attaches is different to what I have encountered before and not really sure whether I have broken something? As you can see in the photo there is a metal ring washer that just came off the metal pipe, along with the nut, as I was unscrewing everything. This is very tight to get back over the pipe, and just not sure really how the nut now fits to form a watertight seal if that makes sense with this washer bit loose...

Any help much appreciated.

Carrot007

Odd, replace it, it loks manky anyway. Get a new normal curt off to put onto the plastic bit (rememebr the ptfe (and imo anways use gas ptfe it is better and costs the same)).

Grenage

That olive shouldn't be there if it's a tap connector; the seal is made by a fibre washer (which you'll want to replace).

If it's a regular compression joiner then replace it with a tap connector fitting.

Don't use PTFE on compression or tap connector fittings - it's only for when threads make the seal - like radiator tails.

You can see where the plastic thread has been mangled, but it might be alright.  If there is enough play in the pipes then you could cut the plastic back, but it will need to be a straight and smooth cut.

gamston

I had to replace my Plastic shanked filler valve with a brass shanked filler valve because the thread was damaged
now i only buy the brass shanked ones

benson1980

Thanks all- I've probably oversold my plumbing knowledge here in that I've done two of these in my lifetime and not had this issue before . The plastic thread is just the old filler valve so I was going to buy a new one with a brass fitting. If I just get a new connection and start again (and potentially remove the isolator valve thing), is this the best way? I only need a temporary fix as this house (and bathroom) is a do-er upper and the toilet will get replaced at some point. If I get something like this and potentially cut back the water pipe a few inches to give sufficient room, would this work- Grenage, is that what you are referring to? Does this just push fit onto the old metal pipe and then I can collect up to the new filler valve on the other end?

https://www.screwfix.com/p/jg-speedfit-push-fit-flexible-tap-connector-hoses-15mm-x-x-300mm-2-pack/2475G?tc=FC6&ds_kid=92700055281954514&ds_rl=1249404&gclid=CjwKCAjw-qeFBhAsEiwA2G7Nl5ua7HK3PP9TFEQDjWiIeqSX20OP0ZaiX5qhKX-xH2ODHiIsYRTrlxoCw8IQAvD_BwE&gclsrc=aw.ds

neilmcl

benson1980 said:

Thanks all- I've probably oversold my plumbing knowledge here in that I've done two of these in my lifetime and not had this issue before . The plastic thread is just the old filler valve so I was going to buy a new one with a brass fitting. If I just get a new connection and start again (and potentially remove the isolator valve thing), is this the best way? I only need a temporary fix as this house (and bathroom) is a do-er upper and the toilet will get replaced at some point. If I get something like this and potentially cut back the water pipe a few inches to give sufficient room, would this work- Grenage, is that what you are referring to? Does this just push fit onto the old metal pipe and then I can collect up to the new filler valve on the other end?

https://www.screwfix.com/p/jg-speedfit-push-fit-flexible-tap-connector-hoses-15mm-x-x-300mm-2-pack/2475G?tc=FC6&ds_kid=92700055281954514&ds_rl=1249404&gclid=CjwKCAjw-qeFBhAsEiwA2G7Nl5ua7HK3PP9TFEQDjWiIeqSX20OP0ZaiX5qhKX-xH2ODHiIsYRTrlxoCw8IQAvD_BwE&gclsrc=aw.ds

You definitely don't want to remove the isolation valve, it's there for a very good reason. Just remove the olive as it shouldn't be there and when you fit the new fill valve put a suitable 1/2" fibre washer in there. There may be an old fibre washer already in the connector so try lifting it out with a small flat blade screwdriver and give the inside a clean. As mentioned, absolutely no reason you should be using PTFE tape on the new fill valve connection.

Also, those are tap hoses, what @Grenage is referring to are just the connector itself, ie, https://www.screwfix.com/p/compression-straight-tap-connector-15mm-x/58294 , by the looks of it you already have a tap connector fitting, albeit with an isolation valve built in.

Grenage

You can certainly do it that way, yup.  You might want a hose with an isolator if you're going to cut back (or fit an isolator before the hose).

Something like this, although you could obviously use push-fit instead.

https://www.screwfix.com/p/flexible-tap-connector-with-valve-15mm-x-x-300mm/3558G?tc=FT1&ds_kid=92700055281954514&ds_rl=1249404&gclid=CjwKCAjw-qeFBhAsEiwA2G7Nl4Y-5M8L0boXgybHSOjYjwIT5r3PBGJFLk5ZSTFcesBb8JRVE5NoPxoC6rAQAvD_BwE&gclsrc=aw.ds

If you can get a 15mm compression to 1/2 tap connector with an isolator then you won't need to cut any pipe and use a hose.

This is all assuming that the existing fitting doesn't have a tap connector on one side.  If it does - just replace the washer.

benson1980

ok thanks again- think I've got a better idea of what I'm doing now. A few different options but just understanding the right terminology for what I have in front of me i.e. compression fitting, is most helpful

neilmcl

benson1980 said:

ok thanks again- think I've got a better idea of what I'm doing now. A few different options but just understanding the right terminology for what I have in front of me i.e. compression fitting, is most helpful

What you got isn't a compression fitting, as I've already pointed out it's a tap connector. Show another picture of the connector looking down into it.

benson1980

neilmcl said:

benson1980 said:

ok thanks again- think I've got a better idea of what I'm doing now. A few different options but just understanding the right terminology for what I have in front of me i.e. compression fitting, is most helpful

What you got isn't a compression fitting, as I've already pointed out it's a tap connector. Show another picture of the connector looking down into it.

Ah ok...here's another photo with the nut, which fits over the 15mm pipe.



Therefore I thought I was looking at this kind of setup..
https://www.youtube.com/watch?v=NpIh1u_Y3h0&ab_channel=Tommy%27sYard

neilmcl

Ok, apologies to you and @Grenage then, it is a compression fitting. Not sure why they've installed on of those. You'll need a new olive to get it to work or replace it altogether with a standard tap connector.