How To Install A Thermostatic Valve?

Has the heating in your room been set to 20 ° C for two days? Are you starting to get too hot and no matter how much you turn on the manually operated valve on your radiator, nothing changes? Maybe it’s defective, and it’s time to replace it. Why not opt ​​for a thermostatic valve, which is more practical for regulating the temperature?

If you don’t know how to proceed, don’t panic: belimo actuators will explain everything to you in this article.

Remove The Old Radiator Valve

Before carrying out any operation, it is essential to cut off the water supply and drain your radiator or your heating circuit to reduce the quantity of water present in your installation and to lower the pressure. Wait a few minutes before any manipulation: because of the pressurized water, you risk getting burned!

Once you’ve done everything, you can move on. It’s time to take out the broken faucet.

If your faucet is stuck under several coats of paint (it sometimes happens), scrub it with a wire brush.

Remove the central screw that holds your faucet. Using an adjustable wrench, unscrew the nut that connects the valve body to the radiator and the water supply – this nut is screwed onto the thread of the valve. It is then ready to be removed.

Small Tip: throughout the operation, place a container that can contain the water that may flow from the radiator and pipes during your manipulations.

Assemble Your New Thermostatic Valve

Note that a thermostatic valve consists of two parts: it’s head (which adjusts the temperature) and its body (which is T-shaped).

A thermostatic valve is supplied with a special “T”, so the original one must be removed. Unscrew the nut that connects the “T” to the radiator, then do the same with the one that connects it to the central heating. Then install the new “T”. Important: line the threads with Teflon before tightening the nuts! This will allow them to be perfectly waterproof.

Last Step: tighten the ring supplied with your new thermostatic valve as far as possible. This time it’s definitely in place! All you have to do is bleed the valve again to release the air contained in the radiator.

Kathy McDonough