Radiator Valves

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Avari Square Chrome Radiator Valves Straight

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£29.33 each (Inc VAT)

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£24.44 each (Ex VAT)

Avari bathrooms is a stunning collection of bathroom units and sanitaryware that will cater to all tastes. Whether you're looking for modern curved edges with clever integrated lighting solutions, or...

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£29.33 each (Inc VAT)

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£24.44 each (Ex VAT)
Kartell 10mm Angled Lockshield Galaxy Design with DOC

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£6.90 each (Inc VAT)

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£5.75 each (Ex VAT)

These 10mm Galaxy design Lockshield radiator valve offers an attractive finish to your chosen radiator. The twin pack comes with the lockshields and drain off valve, provided in a 10mm size. It also...

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£6.90 each (Inc VAT)

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£5.75 each (Ex VAT)
Kartell 10mm Angled Lockshield Radiator Valve White Galaxy Design

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£5.36 each (Inc VAT)

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£4.47 each (Ex VAT)

These 10mm Galaxy Angled design Lockshield radiator valves offer an attractive finish to your chosen radiator. This twin pack comes with the lockshields and drain off valve, provided in a 10mm size.

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£5.36 each (Inc VAT)

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£4.47 each (Ex VAT)
Kartell 10mm Angled Lockshield Style Design with DOC

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£6.72 each (Inc VAT)

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£5.60 each (Ex VAT)

These 10mm Style design Lockshield radiator valve offers an attractive finish to your chosen radiator. The twin pack comes with the lockshields and drain off valve, provided in a 10mm size. It also...

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£6.72 each (Inc VAT)

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£5.60 each (Ex VAT)
Kartell 10mm Angled Lockshield White Style Design

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£4.96 each (Inc VAT)

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£4.13 each (Ex VAT)

This K-Rad 10mm Angled LS/WH in Style is manufactured from the best quality brass material, available as strange or angled. They are supplied in a pair and come complete with Wheelhead and Lockshield...

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£4.96 each (Inc VAT)

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£4.13 each (Ex VAT)
Kartell 15mm Angled Lockshield Galaxy Design with DOC

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£6.90 each (Inc VAT)

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£5.75 each (Ex VAT)

These 15mm Galaxy design Lockshield radiator valve offers an attractive finish to your chosen radiator. The twin pack comes with the lockshields and drain off valve, provided in a 15mm size. It also...

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£6.90 each (Inc VAT)

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£5.75 each (Ex VAT)
Kartell 15mm Angled Lockshield Radiator Valve White Galaxy Design

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£5.36 each (Inc VAT)

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£4.47 each (Ex VAT)

These 15mm Galaxy Angled design Lockshield radiator valves offer an attractive finish to your chosen radiator. This twin pack comes with the lockshields and drain off valve, provided in a 15mm size.

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£5.36 each (Inc VAT)

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£4.47 each (Ex VAT)
Kartell 15mm Angled Lockshield Style Design with DOC

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£6.72 each (Inc VAT)

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£5.60 each (Ex VAT)

These 15mm Style design Lockshield radiator valve offers an attractive finish to your chosen radiator. The twin pack comes with the lockshields and drain off valve, provided in a 15mm size. It also...

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£6.72 each (Inc VAT)

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£5.60 each (Ex VAT)
Kartell 15mm Angled Lockshield White Style Design

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£4.96 each (Inc VAT)

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£4.13 each (Ex VAT)

This K-Rad 15mm Angled LS/WH in Style is manufactured from the best quality brass material, available as strange or angled. They are supplied in a pair and come complete with Wheelhead and Lockshield...

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£4.96 each (Inc VAT)

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£4.13 each (Ex VAT)
Kartell 15mm Angled Radiator Valve Anthracite Pair

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£27.00 each (Inc VAT)

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£22.50 each (Ex VAT)

This pair of K-Rad angled radiator valves are a high-quality radiator piece, which are compatible with both floor and wall mounted pipes. They also have a thermostatic control for easy adjustment of...

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£27.00 each (Inc VAT)

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£22.50 each (Ex VAT)
Kartell 15mm Angled Radiator Valve Black Pair

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£27.00 each (Inc VAT)

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£22.50 each (Ex VAT)

This pair of K-Rad Angled radiator valves are a high-quality radiator part which delivers an impressive component and combines both a dependable build with a fine modern look. They also have a...

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£27.00 each (Inc VAT)

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£22.50 each (Ex VAT)
Kartell 15mm Straight Radiator Valve Anthracite Pair

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£27.00 each (Inc VAT)

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£22.50 each (Ex VAT)

This pair of K-Rad straight radiator valves are a high-quality radiator piece, which are compatible with both floor and wall mounted pipes. They also have a thermostatic control for easy adjustment...

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£27.00 each (Inc VAT)

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£22.50 each (Ex VAT)
Kartell 15mm Straight Radiator Valve Black Pair

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£27.00 each (Inc VAT)

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£22.50 each (Ex VAT)

This pair of K-Rad Straight radiator valves are a high-quality radiator piece which delivers an impressive component and combines both a dependable build with a fine modern look. They also have a...

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£27.00 each (Inc VAT)

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£22.50 each (Ex VAT)
Kartell Air Vent Brass

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£7.04 each (Inc VAT)

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£5.87 each (Ex VAT)

The brass air vent is a radiator part that will add beauty, character, and individuality to your home. It can also be polished to achieve a lighter and brighter finish, or you can leave the brass to...

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£7.04 each (Inc VAT)

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£5.87 each (Ex VAT)
Kartell Aspen 15mm Straight Radiator Valve Pair

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£32.00 each (Inc VAT)

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£26.67 each (Ex VAT)

This pair of K-Rad Aspen straight Radiator valves are a high-quality radiator piece which delivers an impressive component and combines both a dependable build with a fine modern look. They also have...

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£32.00 each (Inc VAT)

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£26.67 each (Ex VAT)
Kartell Atlantic Designer Radiator Anthracite 500 x 1185mm

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£307.34 each (Inc VAT)

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£256.12 each (Ex VAT)

This amazing K-Rad 500mmx1185mm Atlantic Design central heated radiator features a modern rectangular design. It is guaranteed to add style and sophistication within your home, while also boosting a...

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£307.34 each (Inc VAT)

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£256.12 each (Ex VAT)
Kartell Design Twin Pack Angled Thermostatic Radiator Valve Black

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£56.00 each (Inc VAT)

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£46.67 each (Ex VAT)

The K-Rad angled Design Twin TRV is a stylish and modern radiator part which is supplied in a pair. It has a very high-quality finish construction and a beautiful sleek black finish, which will no...

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£56.00 each (Inc VAT)

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£46.67 each (Ex VAT)
Kartell Design Twin Pack Angled Thermostatic Radiator Valve Brushed Brass

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£59.34 each (Inc VAT)

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£49.45 each (Ex VAT)

The K-Rad angled Design Twin TRV is a stylish and modern radiator part which is supplied in a pair. It has a very high-quality finish construction and a beautiful sleek brushed brass finish, which...

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£59.34 each (Inc VAT)

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£49.45 each (Ex VAT)
Kartell Design Twin Pack Corner Thermostatic Radiator Valve Anthracite

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£62.66 each (Inc VAT)

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£52.22 each (Ex VAT)

The K-Rad Design Twin corner TRV is a radiator piece manufactured from high-quality stainless-steel material. The sleek design is the best quality radiator valve to have in your home, and the...

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£62.66 each (Inc VAT)

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£52.22 each (Ex VAT)
Kartell Design Twin Pack Corner Thermostatic Radiator Valve Black

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£62.66 each (Inc VAT)

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£52.22 each (Ex VAT)

The K-Rad corner Design Twin TRV is a stylish and modern radiator part which is supplied in a pair. It has a very high-quality finish construction and a beautiful sleek black finish, which will no...

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£62.66 each (Inc VAT)

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£52.22 each (Ex VAT)
Kartell Design Twin Pack Corner Thermostatic Radiator Valve Brushed Brass

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£66.66 each (Inc VAT)

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£55.55 each (Ex VAT)

This pair of K-Rad Corner Design Twin TRV are a stylish and modern radiator part. They have a very high-quality finish construction and a beautiful sleek brushed brass finish, which will no doubt...

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£66.66 each (Inc VAT)

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£55.55 each (Ex VAT)
Kartell Design Twin Pack Corner Thermostatic Radiator Valve Chrome

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£62.66 each (Inc VAT)

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£52.22 each (Ex VAT)

This pair of K-Rad Corner Design Twin TRV are a stylish and modern radiator part. They have a very high-quality finish construction and a beautiful sleek chrome finish, which will no doubt encourage...

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£62.66 each (Inc VAT)

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£52.22 each (Ex VAT)
Kartell Design Twin Pack Straight Thermostatic Radiator Valve Anthracite

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£59.34 each (Inc VAT)

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£49.45 each (Ex VAT)

The K-Rad Design Twin straight TRV is a radiator piece manufactured from high-quality stainless-steel material. The sleek design is the best quality radiator valve to have in your home, and the...

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£59.34 each (Inc VAT)

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£49.45 each (Ex VAT)
Kartell Design Twin Pack Straight Thermostatic Radiator Valve Black

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£59.34 each (Inc VAT)

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£49.45 each (Ex VAT)

The K-Rad straight Design Twin TRV is a stylish and modern radiator part which is supplied in a pair. It has a very high-quality finish construction and a beautiful sleek black finish, which will no...

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£59.34 each (Inc VAT)

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£49.45 each (Ex VAT)

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Radiator valves are a vital part of any heating system, helping you maintain comfort and efficiency at home. With options such as thermostatic radiator valves (TRVs), you can easily control the temperature of each radiator individually for a tailored heating experience.

Types of radiator valves

Straight Radiator Valves: Ideal for pipework that comes directly from the floor. These valves connect in a straight line, offering a neat and practical finish.
Angled Radiator Valves: The most common choice, angled valves connect at 90 degrees to help conceal pipework for a tidy look.
Corner Radiator Valves: A stylish option where the valve faces inward toward the wall, creating a discreet appearance.
Black Radiator Valves: A bold, contemporary choice that pairs perfectly with modern interiors and contrasts beautifully with lighter radiators.

Maintaining your radiator valves

To keep your radiator valves efficient and long-lasting, regular maintenance is key. Using a radiator bleed valve helps release trapped air, ensuring your heating system runs smoothly and avoids cold spots.

Why choose thermostatic radiator valves (TRVs)?

Thermostatic radiator valves automatically regulate hot water flow based on room temperature. This maintains consistent comfort while reducing energy waste, preventing overheating, and lowering energy costs.

Whether you need angled radiator valves, corner radiator valves, or advanced TRVs, our expert team can help you make the right choice. Visit your local Howarth branch for tailored advice or explore our full range online.

Control your home’s heating with confidence and style using high-quality radiator valves from Howarth.

Frequently Asked Questions

How do I change a radiator valve?

To change a radiator valve, you will need to first switch off the heating and water system, and then locate the drain off. After that, you will need to remove the old radiator valve to be able to fit the new radiator valve. That is when you can turn the mains water back on, to be able to finish by bleeding the radiator.

How do thermostatic radiator valves work?

Thermostatic valve head goes on top of the valve body, and then as the room temperature changes, the valve head expands, adjusting a pin in the valve body so that it opens or closes.

What are the two valves on a radiator for?

One of the valves accounts for hot water that enters the radiator. The other valve, referred to as the lockshield valve, balances the system by regulating how much heat the radiator gives off.

What side of the radiator is the lockshield valve?

The lockshield valve is located on the side of the radiator opposite the on/off valve.

How to change a radiator valve without draining the system?

To change a radiator valve without draining the whole system, start by turning the heating and water off, then protect the floor around the radiator under the valves to catch any excess water. After that, prepare the radiator valves by removing the nuts and adaptors on the new valve and smear it with the PFTE tape that joins to the radiator. Next, release the stored pressure, then open the old valve on the flow pipe. Once the thermostatic valve or manual is open, release the pressure, drain the radiator and remove the old thermostatic valve. Finally, you can attach the new thermostatic valve or manual valve, remove the old lockshield valve, and connect the new lockshield valve to finish.