Ausimix 15mm [4-in-1] Thermostatic Mixing Valve HEAT110780

Reliance Ausimix 15mm 4-in-1 TMV2 Thermostatic Mixing Valve.

Compact Hot Water Safety with a Practical 4-in-1 Design

The Reliance Ausimix 15mm 4-in-1 TMV2 Thermostatic Mixing Valve blends hot and cold water to provide a safer, stable outlet temperature. It helps reduce the risk of scalding at baths, showers, basins and bidets while supporting comfortable everyday use.

Water systems often store hot water at higher temperatures to help control Legionella. However, water at these temperatures can present a serious scalding risk at the outlet. The Ausimix solves this problem by mixing hot and cold supplies close to the point of use.

The valve reacts automatically when incoming temperatures or pressures change. Therefore, it maintains the selected mixed-water temperature during normal operation. If the cold supply fails, the valve shuts off the hot water flow to prevent unsafe temperatures from reaching the outlet.

Unlike the standard 2-in-1 model, the 4-in-1 Ausimix includes strainers, check valves, test ports and isolation valves. As a result, installers need fewer separate components around the valve. This creates a neater installation while making commissioning, testing and future servicing easier.

The compact valve can deliver up to 35 litres per minute at 2.5 bar. It also works with pressure differences of up to 10:1 between the hot and cold supplies. In addition, Reliance uses Viton seals to improve high-temperature performance.

The 15mm union model suits copper pipe and carries both WRAS and TMV2 approval. Its compact design makes it ideal for domestic bathrooms, public buildings and other applications that require reliable TMV2 temperature control.

KEY FEATURES

• TMV2 approved for domestic and public-sector applications
• WRAS approved for use with wholesome water
• Blends hot and cold water to a safe outlet temperature
• Automatic hot-water shut-off if the cold supply fails
• 4-in-1 design includes strainers and check valves
• Integrated isolation valves simplify future servicing
• Built-in test ports support easier commissioning
• Delivers up to 35 litres per minute at 2.5 bar
• Handles hot-to-cold pressure differences up to 10:1
• Viton seals improve high-temperature performance
• Compact body suits restricted installation spaces
• Five-year manufacturer guarantee

TECHNICAL SPECIFICATIONS

THE PROBLEM IT SOLVES

Hot water stored at high temperatures supports hygiene, but it can cause serious scalding injuries at outlets.

The Ausimix blends hot and cold water before it reaches the user. Therefore, it allows the system to retain suitable storage temperatures while delivering safer water at the outlet.

The 4-in-1 design also reduces installation complexity. Built-in service and protection components mean installers need fewer separate fittings around the valve.

WHY CHOOSE THIS PRODUCT?

The Ausimix 4-in-1 combines temperature control, backflow protection, filtration, testing and local isolation within one compact assembly.

This integrated design saves space and supports a cleaner installation. It also makes commissioning and maintenance easier because installers can isolate and test the valve locally.

Its TMV2 approval makes it a strong choice for domestic bathrooms and public-sector applications where reliable scald protection matters.

PERFECT FOR

• Domestic bathrooms
• Baths and showers
• Basins and bidets
• Family homes
• Schools and nurseries
• Public-sector washrooms
• New-build properties
• Bathroom refurbishments
• Compact installation spaces
• Professional plumbing projects

WHEN SHOULD I USE THIS PRODUCT?

Choose the Reliance Ausimix 15mm 4-in-1 when you need TMV2-approved temperature control and want to reduce the number of separate fittings.

It works particularly well where installers need local isolation, test points and easier servicing. Before ordering, confirm that the 15mm union connections suit your copper pipework.

This model carries TMV2 approval. Therefore, use a suitable TMV3-certified valve where a healthcare or higher-risk specification requires TMV3 compliance.

WHY BUY FROM KUDOS TRADING?

• Genuine Reliance Valves products
• Competitive UK prices
• Fast nationwide delivery
• Expert technical support
• Trusted plumbing and heating supplier
• Extensive range of TMV2 and TMV3 valves
• Helpful customer service before and after purchase

COMPATIBLE PRODUCTS

• 15mm copper pipe
• 15mm compression fittings
• Pressure reducing valves
• Isolation valves
• Unvented cylinder controls
• Pressure and temperature relief valves
• Expansion vessels
• TMV service and maintenance products

FREQUENTLY ASKED QUESTIONS

What does 4-in-1 mean on the Reliance Ausimix?

The 4-in-1 version includes strainers, check valves, test ports and isolation valves. These components support safer operation, easier commissioning and simpler maintenance.

Is the Ausimix 15mm 4-in-1 TMV2 or TMV3 approved?

This specific model carries TMV2 approval. It also holds WRAS approval. Choose a TMV3-certified model where the project specification requires TMV3 compliance.

What pipe can I use with this valve?

Reliance specifies the 15mm flat-faced union model for use with copper pipe only.

Where can I install the Ausimix 4-in-1 valve?

The valve suits showers, baths, basins and bidets. Its compact design makes it useful beneath outlets and inside restricted spaces.

What happens if the cold water supply fails?

The valve automatically shuts off the hot water flow. This fail-safe action helps prevent dangerously hot water from reaching the outlet.

What flow rate can the valve deliver?

The Ausimix Compact range can deliver up to 35 litres per minute at 2.5 bar pressure.

Next Working Day Delivery: Yes, we hold all our products in stock at our 7000 sq ft Nottingham warehouse and at our 3000 sq ft warehouse in Market Harborough and use DPD for a tracked next-day delivery.

Collection Available: You can always collect from our Norttinagham location and help yourself to a free tea and coffee