Replacing a radiator valve.

11 Jun 2016
Reaction score
United Kingdom
Hi guys, snapped off the spindle head on hallway radiator valve. Can the spindle or valve be replaced without draining the whole system down. Seen a you tube video about freezing the pipework, is it easy & does it work .
Cheers Doug


  • 15259440652871029450793.jpg
    162.5 KB · Views: 150
Sponsored Links
This is what I would do.
1. Get an identical valve to the broken one. Remove its bottom nut and olive. Remove the tail which goes into the rad.
2. Close down the valve at the other end of the rad.
3. Put a large container under the broken valve. This has to be large enough to contain all the water in the rad. Maybe several containers and a helper to swop them.
4. With the new valve within reach remove the bottom nut on the faulty valve, pull the pipe out and quickly put your thumb over the end.
5. Relax and watch the water drain from the rad while your helper manipulates the containers.
6. Quickly fit your new valve to the end of the pipe and finger tighten the nut so no or very little water dribbles out.
7. Once the rad has drained you can undo the nut on the left of the old valve, remove it, and fit the new one on. There should be no need to change the tail in the rad.
8. Tighten everything up, open both valves allowing the rad to fill and bleed it. While doing this ask your helper to put the kettle on, get a beer from the fridge, or whatever.
9. Relax and enjoy your drink.
there is plenty metal left on the valve stem
to open it,just n eed decent pliers.
channel lock pliers (usa made) being used in a bar in intergas country :)
If that is upstairs only need to drain top part and closing the valves on all other radiators will only mean having to drain the pipes not as bad as it sounds and if you are quite DIY savvy shouldn’t take you more than an hour.

I have not heard good things about them freeze kits and would probably avoid for a job that is quite simple.
Sponsored Links
Is it a sealed or open vented system? If sealed, it’s pretty easy to do as when the system is depressurised, it doesn’t really leak much when you change the valve. Well, mine didn’t!
My open vented system doesn't leak much when you take a pipe off either. Easy to stop the flow with a finger when necessary.

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local

Sponsored Links