Hey there! As a thermostatic valve supplier, I've seen a lot of different types of these nifty devices in my time. Thermostatic valves are super important in heating, ventilation, and air conditioning (HVAC) systems. They help control the temperature by regulating the flow of hot or cold fluids. In this blog, I'm gonna break down the various types of thermostatic valves out there.
1. Thermostatic Radiator Valves (TRVs)
These are probably the most common type of thermostatic valves you'll come across, especially in residential heating systems. They're used to control the temperature of individual radiators.
Straight Thermostatic Radiator Valve
A Straight Thermostatic Radiator Valve is designed to be installed directly in line with the radiator inlet. It's a simple and straightforward option. The valve body has a straight design, which makes it easy to install in most standard radiator setups. You can adjust the temperature by turning the valve's control knob. This type of valve is great for rooms where you want precise temperature control. For example, in a bedroom, you can set the temperature to a comfortable level at night and adjust it during the day.
Angled Thermostatic Radiator Valve
On the other hand, the Angled Thermostatic Radiator Valve has a 90-degree angle in its design. This makes it ideal for situations where space is limited or when the pipework comes in at an angle. It works in the same way as the straight valve, but its angled shape allows for more flexible installation. You'll often find these in older buildings where the radiator pipework isn't as straightforward.
Thermostatic Head
The Thermostatic Head is a crucial part of both straight and angled thermostatic radiator valves. It contains a sensor that detects the room temperature. Based on the set temperature, the thermostatic head expands or contracts a wax element inside the valve. This movement controls the flow of hot water into the radiator. You can easily replace the thermostatic head if it gets damaged or if you want to upgrade to a more advanced model with additional features, like a digital display.
2. Mixing Thermostatic Valves
Mixing thermostatic valves are used to mix hot and cold water to achieve a desired temperature. They're commonly found in domestic hot water systems, such as in showers, bathtubs, and faucets.
Domestic Mixing Valves
In your home, a domestic mixing valve ensures that the water coming out of your shower or faucet is at a safe and comfortable temperature. It has two inlets, one for hot water and one for cold water, and an outlet for the mixed water. The valve automatically adjusts the ratio of hot and cold water based on the set temperature. This is really important for preventing scalding, especially in households with children or elderly people.
Industrial Mixing Valves
Industrial mixing valves are used in larger-scale applications, like in factories and commercial buildings. They're designed to handle higher flow rates and more extreme temperatures. These valves are often more complex and may have additional features, such as remote control and monitoring capabilities. For example, in a chemical processing plant, an industrial mixing valve can be used to mix different chemicals at precise temperatures to ensure the quality of the final product.
3. Pressure-Balancing Thermostatic Valves
Pressure-balancing thermostatic valves are similar to mixing valves, but they also take into account the pressure of the incoming hot and cold water.
Shower and Bathtub Valves
In a shower or bathtub, a pressure-balancing thermostatic valve ensures that the water temperature remains stable, even if there are changes in the water pressure. For example, if someone flushes the toilet while you're taking a shower, the pressure in the cold water line may drop. A pressure-balancing valve will automatically adjust the flow of hot and cold water to keep the temperature consistent. This prevents sudden temperature changes that can be uncomfortable or even dangerous.
Commercial and Industrial Applications
In commercial and industrial settings, pressure-balancing thermostatic valves are used in applications where precise temperature control and pressure stability are essential. For example, in a hospital's hot water system, these valves ensure that the water used for patient care is at a safe and consistent temperature, regardless of fluctuations in the water supply pressure.
4. Zone Thermostatic Valves
Zone thermostatic valves are used to control the temperature in different zones or areas of a building.


Residential Zone Valves
In a house, you can divide the heating system into different zones, such as the living room, bedrooms, and basement. Each zone can have its own thermostatic valve. This allows you to heat different areas of the house to different temperatures, depending on your needs. For example, you can keep the living room warmer during the day when you're using it, and lower the temperature in the bedrooms when you're not there. This helps to save energy and reduce heating costs.
Commercial Zone Valves
In commercial buildings, zone thermostatic valves are used to control the temperature in different offices, conference rooms, and other areas. They can be connected to a central building management system, which allows for centralized control and monitoring of the heating and cooling in each zone. This is especially useful in large buildings where different areas have different temperature requirements.
Why Choose Our Thermostatic Valves?
As a thermostatic valve supplier, we offer a wide range of high-quality valves to meet your needs. Our valves are made from durable materials and are designed to provide reliable performance. We have a team of experts who can help you choose the right valve for your specific application. Whether you're a homeowner looking to upgrade your radiator valves or an industrial client in need of a large-scale mixing valve, we've got you covered.
If you're interested in purchasing thermostatic valves or have any questions about our products, don't hesitate to get in touch. We're here to assist you with your procurement needs and ensure that you get the best thermostatic valve solution for your project.
References
- ASHRAE Handbook - HVAC Systems and Equipment
- Plumbing Engineering Design Handbook




