Would this be possible?

[Madrab]

If you were to change the whole valve then if you have a sealed system - pressure gauge on the boiler or filling loop - then you would only have to depressurise the system and drain down the rad itself. Turn off all the other rads at their TRV and then once the system is depressurised it will stop draining.

Then just drain the rad and swap the valve.

 

[bettz1]

If you were to change the whole valve then if you have a sealed system - pressure gauge on the boiler or filling loop - then you would only have to depressurise the system and drain down the rad itself. Turn off all the other rads at their TRV and then once the system is depressurised it will stop draining.

Then just drain the rad and swap the valve.

With the bottom pipe being push fit again I take it any 15mm tvr and lockshield should fit?

Possible looking at something like this

 

[Madrab]

Nope - looking at that side on pic it looks like they are 10mm pipes heading up into the valve. You should be able to use 15mm valves as that's what's there just now but depending on the type of reducers they have used to fit into the bottom of the valve will determine if they can be used again

 

[bettz1]

Nope - looking at that side on pic it looks like they are 10mm pipes heading up into the valve. You should be able to use 15mm valves as that's what's there just now but depending on the type of reducers they have used to fit into the bottom of the valve will determine if they can be used again

I'll have a look tomorrow.

So turn off all tvrs on other radiators & the one I'm working on then drain that down and I should be able to have a look what reducers Inside?

Also hoping if I undo and have a look how it's connected I can seal it back up again.

 

[Madrab]

So turn off all tvrs on other radiators & the one I'm working on then drain that down and I should be able to have a look what reducers Inside?

Turn off al the other rads and then turn that one off at both sides (TRV on right, lockshield on left). Open up the bleed valve on the rad and release all the pressure into a tub. Once that stops running then undo one of the nuts on the rad tail heading into the radiator, that will allow you to drain the rad down. Once that's drained down, remove the rad off the wall. Hold a bucket over the TRV valve end and then open it slowly and drain the pressure out of the CH system via the TRV.

Only once that's stopped running can you loosen the lower nut and remove the valve off of the lower coupler and see what type of reducer is in there.

 

[bettz1]

Turn off al the other rads and then turn that one off at both sides (TRV on right, lockshield on left). Open up the bleed valve on the rad and release all the pressure into a tub. Once that stops running then undo one of the nuts on the rad tail heading into the radiator, that will allow you to drain the rad down. Once that's drained down, remove the rad off the wall. Hold a bucket over the TRV valve end and then open it slowly and drain the pressure out of the CH system via the TRV.

Only once that's stopped running can you loosen the lower nut and remove the valve off of the lower coupler and see what type of reducer is in there.

Thank you once again!!

I'm going to pick up a plumb tub in the morning.

To refill it's the black valve in the pics further back?

My only concern is the towel radiator in the upstairs bathroom I've no idea which ways off so ive turned them both anti clockwise.

 

[Madrab]

My only concern is the towel radiator in the upstairs bathroom I've no idea which ways off so ive turned them both anti clockwise.

if they are turn down then clockwise to turn off and anti clockwise to open up, ideally you only turn one valve down and leave the lockshield as that may be a set number of turns closed, if the system was balanced.

 

[bettz1]

if they are turn down then clockwise to turn off and anti clockwise to open up, ideally you only turn one valve down and leave the lockshield as that may be a set number of turns closed, if the system was balanced.

The plumber from a few years ago took the small radiator out and replaced.

 

[bettz1]

Radiator seems to be filling up again.

Got all the water out then turned it off to have a look later and it's draining water again..

.....

I've worked it out I thought the lockshield was the same as an iso valve so was only turning half the way, I've turned it fully clockwise and it's stopped

 

[bettz1]

Turn off al the other rads and then turn that one off at both sides (TRV on right, lockshield on left). Open up the bleed valve on the rad and release all the pressure into a tub. Once that stops running then undo one of the nuts on the rad tail heading into the radiator, that will allow you to drain the rad down. Once that's drained down, remove the rad off the wall. Hold a bucket over the TRV valve end and then open it slowly and drain the pressure out of the CH system via the TRV.

Only once that's stopped running can you loosen the lower nut and remove the valve off of the lower coupler and see what type of reducer is in there.

This doesn't look good, alot of rust.

Is it worth taking a few radiators off and flushing with a hose?

Drained it all down this is the best pic I could get without having a fountain of water, I'm wondering if that black tvr would fit as a replacement.

 

[bettz1]

Just wanted to say thank you for all the help and advice especially @Madrab

I ended up painting the radiator.

 

[Madrab]

nicely done