Radiator Valve Change Kit

Product Information

Remember to open the lockshield valve the same number of turns as you noted down to allow water back into the radiator and turn the TRV to your desired number. In this case, the size of the radiator valve refers to the size of the valve connection and pipework instead of the design of the valve.

Since the radiator has been drained and refilled you will need to re-pressurise the system to ensure everything is working correctly. If your lockshield valve has a drain off, you could at this point drain the radiator from the drain valve. However, changing a radiator valve without draining the system is probably not a job for the first-time DIYer so it would be best to get the professionals in.So draining it fully will mean you are throwing away these important chemicals which you will have to replace to replenish the system.

So this guide will show you how to change your lockshield radiator valve and either your manual valve or TRV without fully draining the system to get the job done quicker. We hope you have found this guide helpful and at this point you have a lovely new pair of valves on your radiator!For example, the water in your central heating system is filled with heating additives and inhibitor which protect the system. If you are changing a couple of valves on a few radiators, it is probably best to drain the whole heating system down. If you consider yourself an experienced DIYer and feel confident with most radiator related jobs then you should find it fairly easy to change a radiator valve if you have a combi boiler system. Place a container beneath the valve and turn it anti-clockwise to open it using an adjustable spanner.

It is important to keep hold of the valve body with the grips to avoid it putting pressure on the pipe causing it to bend and potentially leak later on! If you think the task of trying to avoid flooding the room whilst changing your radiator valve is too much to handle, there is an alternative method to do the job without draining the system. However, if you are only updating one radiator you can change the radiator valve without fully draining the system and there are actually benefits of doing so. This piece of kit will make your life easier by temporarily freezing the flow pipe to prevent water flowing out onto the floor.Holding the valve body with the grips, align it with the adapter and tighten the cap nut with the spanner that holds them together. If you are changing both radiator valves so you have a matching pair, now is the time to remove your old lockshield valve.

Making the swap to thermostatic radiator valves can help heat your home more efficiently, reduce heating bills and give you more control over the temperature so that each room feels comfortable. If that’s the case, head over to our how to drain a pressurised system guide then come back here to learn how to fit the new valve.Since this method of updating radiator valves doesn’t involve changing the pipework, make sure to check that your new radiator valve is an exact match in size to the valve you are replacing. But if you only want to change your thermostatic or manual valve then you can skip to the final maintenance section.