22mm mixing valves are engineered to blend hot and cold water to deliver a controlled, pre-set output temperature. Commonly used in domestic plumbing systems, they ensure safe water delivery to taps, showers, and outlets by preventing temperature spikes and scalding risks.These valves play a crucial role in energy efficiency and water safety, especially in systems where water is stored or supplied at high temperatures. Whether used in homes, hotels, or care settings, 22mm mixing valves offer reliable performance, easy installation with standard 22mm pipework, and consistent temperature regulation for daily comfort and protection.

Key features and benefits of these valves.

Key Features

Blends hot and cold water accurately to a stable, desired temperature. Prevents fluctuations that can cause discomfort or scalding.

Key Features

Perfect for use with unvented cylinders, combi boilers, or storage tanks. Ensures safe water delivery at baths, basins, and showers.

Key Features

Most models feature an easy-to-access dial or screw to fine-tune the output temperature. Ideal for tailoring systems to user or site-specific needs.

22mm mixing valves are essential for systems where water is stored at high temperatures to reduce bacterial growth (such as Legionella), but still needs to be delivered safely at outlets. By automatically blending hot and cold feeds, these valves strike the perfect balance between hygiene and user protection.

They also help improve efficiency by reducing the need to waste water while adjusting temperature at the tap. Whether you’re upgrading an existing hot water system or fitting out a new one, a mixing valve ensures water is safe, comfortable, and reliable from the first use.

22mm mixing valves are most commonly found in domestic and small commercial hot water systems, especially in conjunction with storage cylinders or combi boilers. You’ll find them beneath baths, basins, and sinks — or near the water heater — ensuring consistent delivery at safe temperatures.

They’re also commonly used in care homes, nurseries, schools, and hospitals, where safety standards demand water is delivered below scalding temperatures. Their compatibility with 22mm pipework makes them ideal for medium-flow outlets and household hot water networks.

It blends hot and cold water to a safe, controlled temperature before it's delivered to taps, showers, or outlets — ensuring user comfort and preventing scalding.

A thermostatic mixing valve is a type of mixing valve that adjusts automatically based on water temperature. Not all mixing valves are thermostatic — some are manually set.

Typically near hot water sources such as cylinders or combi boilers, or close to outlets like baths, basins, or showers for localised temperature control.

Yes — it works well with combi boilers to regulate outlet temperature and enhance safety.

Yes — most 22mm mixing valves allow manual adjustment, usually between 35°C and 60°C.

Many are WRAS approved, meaning they’re certified safe for use in UK potable water systems. Always check the product listing.

Yes — by controlling the maximum water temperature, they significantly reduce the risk of burns, especially in homes with children or elderly users.

Yes — a single mixing valve can supply several outlets, provided flow rate and pipework allow for consistent temperature.

A slight drop may occur, but most valves are designed to maintain balanced pressure for stable performance.

Domestic hot water systems, underfloor heating, care homes, schools, and healthcare environments — wherever safe water temperatures are required.

Minimal maintenance is required. In hard water areas, occasional cleaning or descaling may be necessary to prevent limescale build-up.

Yes — most 22mm mixing valves can be installed in either orientation, as long as the flow direction matches the markings on the valve body.

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