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LavaTap Thermostatic Mixing Valve - TMV15

LavaTap Thermostatic Mixing Valve - TMV15

The LavaTap compact thermostatic mixing valve is designed to regulate mixed water temperature by b...

Best current price£39.49from B&Q

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B&QB&Q - Compact 15mm Thermostatic Mixing Valve Tmv 2 Wras Approved
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Product Information

Full details

The LavaTap TMV15 is a compact thermostatic mixing valve designed for domestic hot water systems, ideal for homeowners and installers seeking to prevent scalding at outlets like basins, baths, and showers. Its key benefit is providing stable, controlled mixed water temperatures, offering enhanced safety and comfort. A key consideration is that it is designed for use with specific hot and cold water supply temperatures and requires professional installation for optimal performance and compliance.

All features

Model Part NumberTMV15
BrandLavaTap

Extended Product Information

FAQs

What is a thermostatic mixing valve?

A thermostatic mixing valve (TMV) blends hot and cold water to deliver a safe, consistent mixed water temperature at the point of use, helping to prevent scalding.

Is the LavaTap TMV15 suitable for all types of water systems?

It is designed for domestic stored hot water systems with specific supply temperature ranges (hot: 55-65°C, cold: <25°C). It is not intended for instantaneous water heaters or systems outside these parameters.

What are the benefits of TMV2 and WRAS approvals?

TMV2 approval signifies that the valve meets stringent safety performance standards for healthcare and domestic use. WRAS approval indicates compliance with UK water regulations, ensuring it won't waste water or contaminate the supply.

Can I install the LavaTap TMV15 myself?

While technically possible, professional installation by a qualified plumber is strongly recommended to ensure correct operation, system compatibility, and adherence to safety standards.

How often should I maintain the valve?

Routine checks and cleaning of inlet filters are advised periodically, for example, every 6-12 months, or more frequently if you have hard water or notice a drop in performance. Refer to the manufacturer's guidelines for a specific schedule.

What is the maximum pressure the valve can handle?

The LavaTap TMV15 supports a maximum static working pressure of up to 10.0 bar when correctly installed and maintained.

Where is the best place to install this valve?

It is ideal for point-of-use applications, directly on the supply lines feeding individual fixtures such as showers, baths, or washbasins.

Troubleshooting

Water temperature is too hot or too cold.

Verify that the hot water supply is within the 55-65°C range and the cold water supply is below 25°C. Ensure the valve is correctly installed and that no foreign debris is obstructing the thermostatic mechanism. Check for any recent changes in the main water supply temperatures.

Temperature fluctuates significantly.

Check for unstable water pressures in either the hot or cold supply. Ensure inlet filters are clean. If the issue persists, the thermostatic element may require servicing or replacement by a professional.

Low water flow rate.

Inspect and clean the inlet filters for blockages. Check for any kinks or restrictions in the connecting pipework. Ensure the valve itself is not the source of the restriction, which may require professional inspection.

Valve is leaking.

Check that all connections are securely tightened according to manufacturer specifications. Inspect seals and O-rings for damage and replace if necessary. Persistent leaks may indicate internal damage requiring valve replacement.

Pros and Cons

Pros

  • Enhances safety by reducing scalding risks.
  • Provides consistent water temperature for user comfort.
  • Compact design for easy installation in tight spaces.
  • TMV2 and WRAS approved for reliable performance and compliance.
  • Suitable for a variety of domestic outlets (showers, baths, basins).

Cons

  • Requires specific hot and cold water supply temperatures for optimal function.
  • Professional installation is recommended, adding to initial cost.
  • Performance may be affected by extreme fluctuations in supply pressure beyond its operational range.
  • Routine maintenance is necessary for long-term reliability.

Setup, Compatibility & Care

Installation: The LavaTap TMV15 should be installed by a qualified professional plumber in accordance with the manufacturer's guidance. Ensure correct orientation and connection to both hot and cold water supplies. The valve is designed for 15mm pipe connections, typically used with copper pipe systems. It is intended for point-of-use applications supplying basins, baths, and showers.

Compatibility: This valve is designed for use with stored hot water systems. It requires a hot water supply between 55°C and 65°C and a cold water supply below 25°C. It supports a maximum static working pressure of 10.0 bar. Ensure your existing plumbing system meets these requirements.

Care & Maintenance: To ensure optimal performance and longevity, routine maintenance is recommended. Periodically check the inlet filters for debris and clean them as necessary. Inspect the valve for any signs of wear or damage. Follow the manufacturer's specific cleaning and servicing schedule.

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