Thermostatic three-way valve Termojet 3/4" male thread, kvs-1.6, temp - 35-60°C

The Termojet TMV122 thermostatic three-way valve is a passive mixing device with a built-in thermostat element for domestic hot water systems, showers and bathrooms. It maintains the mixed water outlet temperature in the range of 35–60°C with an accuracy of ±2°C. Connection GZ 3/4" (male thread), flow coefficient Kvs 1,6 m³/h, maximum static pressure — 10 bar. The valve operates without electrical power and requires no maintenance whatsoever.

Technical Specifications

Operating Principle

The valve's two inlets receive hot water (from a boiler or water heater) and cold water from the mains. The thermostat element in the body expands or contracts depending on the temperature of the mixed water at the outlet — and automatically adjusts the proportion of each flow with an accuracy of ±2°C. Key anti-scald function: if the cold water supply suddenly disappears, the valve instantly shuts off the hot flow — water from the shower or tap will not become dangerously hot. A tamper-proof cap protects the settings from unauthorised interference.

Applications

• Scald protection in shower and bath. The 35–60°C series maintains a safe hot water temperature at the point of use — even when mains pressure fluctuates or cold water is temporarily lost.
• Hotels, hospitals, children's facilities. The tamper-proof cap locks the set temperature and prevents unauthorised exceedance — compliance with safety requirements.
• DHW systems with solar collector. Protection against overheated water in the solar heating circuit, where temperatures on sunny days can significantly exceed the comfort limit.
• Indirect water heaters. The valve mixes boiler water with cold water to a safe outlet temperature — even if the boiler has heated the water to 70°C for protection against dangerous micro-organisms.
• Private homes with gas or solid-fuel boilers. A simple, reliable solution without electronics for protecting the bathroom from scalding.

Advantages of the Termojet TMV122

• CW617N brass body — corrosion-resistant, manufacturing precision on par with leading European equivalents.
• Accuracy ±2°C — stable comfortable temperature without spikes or overheating.
• No electrical power — passive round-the-clock operation without electricity costs and without the risk of failure during a power outage.
• Protection when cold water is lost — instant shut-off of the hot flow guarantees safety even in a network emergency.
• A worthy alternative to imported thermostatic valves of equivalent size — without customs delays and mark-ups.

TMV122 and the Heat Pump

Heat pump systems often heat DHW to 55–60°C for sanitary protection against dangerous micro-organisms. In this case the water at the point of use can be excessively hot — the Termojet TMV122 valve in the 35–60°C series mixes it down to a comfortable 38–45°C directly before the tap. More about comprehensive solutions on the Termojet heat pumps website.

Frequently Asked Questions

What is the difference between the 20–43°C and 35–60°C series?
The 20–43°C series is for underfloor heating and low-temperature circuits. The TMV122 in the 35–60°C series is for DHW and shower points where a higher outlet temperature is needed with scald protection. If you need protection for a floor circuit, consider the Termojet valve catalogue in the 20–43°C series.

Does the TMV122 require an actuator?
No. The thermostatic valve is passive: the thermostat element responds to temperature changes on its own without any electrical power. This is a significant advantage compared to rotary valves with electric actuators.