Choosing Radiator Valves

 Choosing Valves Header Banner 

1. What is the Difference between Angled, Straight and Flat Front Valves?

There are three orientations (or shapes) of valve. Angled, Straight or Flat Front. Each allow the pipes to be connected to the radiator or towel rail in a different way.

Choosing Valves - Straight Angled & Flat Front

2. Determining Which Valves You Need for Your Chosen Radiator?

There are many different installation options for a radiator depending where your central heating pipes are. We have created these simple drawings so you can find your radiator type depending whether it has side or underside tappings (valve entries) and then decide which type of valves you'll prefer for your chosen set-up.

Choosing Radiator Valves - Underside Entry

Choosing Radiator Valves - Side Entrys

If you accidentally order the wrong valves and your plumber is there to fit your product, he will usually be able to get around fitting your radiator by being creative with the pipework..

Putting a Return in Your Pipework

3. Calculating and Understanding Pipe Centres.

The "Pipe Centres" is a term referring to the distance required between the flow and return pipe pipes that will enter the radiator or towel rail. We have created this image below to help you visualise how the pipe centres are calculated.

Understaning Pipe Centres on Radiators

Note: If you would like to know how much to add onto your "plus valve width" pipe centres, we have created this easy to follow table listing all the measurements needed. Note: please in mind these values are given based on the valves being fully inserted into the tapping (which on some models they don't screw absolutely flush therefore the pipe centres will increase or decrease accordingly).... with this we highly recommend that you wait until both the radiator and the valves arrive with you before installing your pipes - we will not accept responsibility (or the costs of floor tiles needing to come up etc) for pipes which are incorrect based on the fact they have been installed prior to the radiators arriving, as these measurements are given as a guide only):


Your Guide to Calculating “Plus Valve Widths” Pipe Centres
Links to Valve Product Pages Valve Description Pipe Centers

Sphere (Flat Front) Valves: 40mm each side
  Square (Flat Front) Valves: 40mm each side
    Thermostatic (Flat Front) Valves: 40mm each side
    Sphere (Angled) Valves: 38mm each side
    Square (Angled) Valves: 40mm each side
Traditional (Angled) Valves: 37mm each side
    (Geyser) Thermostatic Angled Valves: 40mm each side

4. What are the 'Floor to Centre of Inlet' and 'Wall to Centre of Inlet' measurements?

Both of these measurements they will allow you to install your pipework, ahead of the radiator physically arriving with you.. although we strongly recommend that you wait until the product arrives before putting any pipework in, as there can always be variances due to products being made by hand. Also your walls and floor might be out slightly. If you wait until the product arrives, you can install the pipes using the product itself as a guide, which is the best option.

Understanding Radiator Measurements Floor to Centre of Inlet and Wall to Centre of Inlet?

5. What are the differences between Thermostatic and Manual Valves?

Thermostatic Valves (also known as TRVs) allow you to control the temperature of a single radiator or towel rail within your central heating system. The normal thermostat on your central heating system controls all radiators, therefore not giving such precision control. Thermostatic valves are made up of a larger valve (TRV) and a lockshield (as shown in the images bellow), so will look imbalanced compared with manual valves. Geyser sell thermostatic valves in brushed chrome, sparkling chrome and white finishes - they are available in straight and angled. 

Thermostatic Valves vs Normal Valves


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