Automatic faucetsAutomatic faucetsAn automatic faucet or tap (also hands-free faucet, touchless faucet, electronic faucet, motion-sensing faucet, sensor faucet, or infrared faucet) is a faucet equipped with a proximity sensor and mechanism that opens its valve to allow water to flow in response to the presence of a user’s hands in close proximity.

What is a hot cold mixing valve?

A thermostatic mixing valve is a device that mixes hot water with cold water to provide a safe, accurate, and constant flow of temperature-controlled water. Regardless of how the supply temperatures or pressures vary over the time of use, the temperature will remain nearly exactly the same as desired.

What is the difference between a mixing valve and a thermostatic mixing valve?

A tempering valve is accurate to around 3℃ +/-, while a thermostatic mixing valve can keep the water to 1℃ +/- and responds faster than a tempering valve to changes in incoming water temperature.

How does a hot and cold water mixing valve work?

As the element expands and contracts, it moves the slide valve (5) to correctly proportion the amount of cold and hot water entering the valve. If the cold water supply were to fail slowly over a long period of time, the valve would increasingly throttle the hot supply to maintain a safe temperature at the outlet (3).

How do you install a hot cold mixing valve?

The HOT/COLD mixing valve is a snap to install – usually requiring 15 minutes or less: simply connect the mixing valve to your toilet, connect the hot water T-valve and hose at your sink, and finally attach your existing hand held bidet sprayer to the mixing valve.

Is a thermostatic mixing valve worth it?

Conclusion. Thermostatic mixing valves on your water heater are essential to prevent scalding and control water temperature at the delivery point. It allows you to increase the heater temperature, killing off harmful bacteria.

Where do you put a thermostatic mixing valve?

A thermostatic mixer can be installed in the hot water heater itself or on a specific plumbing fixture, such as through a shower valve.

How much does a thermostatic mixing valve cost?

Replacing a shower mixing valve costs $225 to $575 on average for materials and labor.

Shower mixing valve replacement cost.

Valve type Valve unit cost Total replacement cost*
Pressure-balancing $50 – $300 $150 – $600
Thermostatic $150 – $600 $250 – $900

Do I need a mixing valve on my hot water heater?

A mixing valve will allow you to run your water heater at a higher temperature and mix cold water in to get to the desired temperature at the tap. It isn’t required.

Do you need a mixing valve on a tankless water heater?

Tankless water heaters do not require a mixing valve, as long as the controller cannot be adjust higher than 120F.

Can you adjust a thermostatic mixing valve?

To adjust the temperature supply remove the plastic cap on top of the valve and adjust with a close fitting spanner. To increase the temperature turn anti-clockwise To decrease the temperature turn clockwise To set the valve to a maximum recommended mixed water temperature, see table below.

What is the purpose of a thermostatic mixing valve?

Thermostatic Mixing Valve Main Purpose. Thermostatic mixing valve is a valve used for maintaining water temperature by blending cold and hot water together in constant flow to ensure safety while washing hands, taking shower and / or bathing.

What temperature should a mixing valve be set at?


These valves should never be set to exceed a maximum temperature of 49C (120F). (Watts recommends the maximum temperature of 43C (110F) for shower and bathing fixtures.)

How does a mixing valve work on a hot water heater?

A mixing valve is a mechanical device that mixes cold water with hot water to deliver mixed, or tempered, water downstream (think of your shower valve). These devices can be put directly onto the water heater outlet so that the tempered water gets delivered everywhere.

How does a digital mixing valve work?

The sensor is immersed in the mixed water as it flows into the valve from the hot and cold inlet ports and out the mix port. As the surrounding water temperature varies, the sensor’s sealed wax expands and contracts to move the mixing cartridge between hot and cold.

How does a hydronic mixing valve work?

Quote from the video:
Quote from Youtube video: Hot water from entering this flow. So now this is the challenge with this using a mixing valve. The flow is going this way the hot water comes up the cold water comes down the returned.

What type of valve can be used for mixing water in a hydronic system?

thermostatic valves

For most hydronic applications, thermostatic valves are typically three-way valves used for small- to medium-sized projects. Plumbing code changes adopted in most jurisdictions across Canada now require the control of hot water temperature through the use of thermostatic mixing valves.

What are three benefits that a mixing valve offers?

The benefits of a thermostatic mixing valve are discussed below:

  • Prevention of Scalding. …
  • Prevention of Thermal Shock. …
  • Inhibiting Legionella. …
  • Eradication of Inconsistent Water Temperature. …
  • Effective Safety Feature. …
  • Requires No Major Changes. …
  • Enhances Home Resale Value.