Multifunctional Thermostatic Circulation Valve for establishing safe and energy saving domestic hot water systems

The valves are installed in the circulation pipes from individual system risers and can be set to a temperature between 35 and 60 degrees Celsius. This will bring hydronic balance, short waiting times, water & energy savings and reduce the risk of legionella in tap and drinking water. The valve is made from lead-free brass and is produced in accordance with regulations of many international and national drinking water directives.

Disinfection modules

The MTCV can be equipped with an electronic (MTCV-C) disinfection module. When used the system temperature can temporarily be increased to circulate hot water with a temperature high enough to kill the legionella bacteria. 

Electronic disinfection

CCR2+ is a simple but advanced electronic controller designed to optimize the electronic disinfection of DHW systems. The controller periodically flushes the system, riser per riser, with an increased water temperature to kill any bacteria's in the system. 
It can control up to 20 risers or be expanded with a slave unit for another 16 extra risers. All the temperatures are stored for data logging and analysis.  
The CCR2+ can be connected to a WiFi or cabled network and by that be accessed by a PC or mobile device. For further optimization it is also possible to connect it with a Building Management System (BMS), saving engineering efforts and BMS components that can possibly do the same job. 

Features and benefits

Improve comfort

Residents will benefit from fast and equal waiting times when tapping for hot water

Save energy

The system will have a lot less heat losses and run more efficient. The costs for residents will be lower and allocated much more accurate.

Reduce water waste

With hot water at the right temperature available at all times, less water is wasted by waiting or mixing it with cold water to achieve the right consumption temperature.

Lower costs

The system runs more efficient and prevents lime and corrosion, potentially damaging the pipes

Reduce the risk of legionella growth

With the water temperatures being controlled on a level legionella cannot grow the risk for contamination reduces. Of course system construction factors such as long pipes without circulation also need to be prevented.

Short payback time

Typically the investment for installing thermal balancing valves are not that high and can be paid back in a short (1-2 years) period of time.

Lead-free brass

The valves are made from lead-free brass and are in accordance with the regulations of many Drinking Water Directives. The lead-free brass is a step towards improving the quality of the drinking water and meets the requirements of sustainability.

Meets individual needs

MTCV basic version (A) – provides a thermostatic balancing function within the temperature range of 35 to 60°C. For systems, where periodical thermal disinfection is required, the basic valve can easily be upgraded with a disinfection module – version C – for electronic, automatic, control of a periodic thermal disinfection process.

Automated disinfection 
Establish the most safe DHW conditions with the highest possible efficiency and reduce time spent on monitoring and data logging. 

Balancing of domestic hot water systems

This animation describes the issues and challenges in domestic hot water systems in non-residential buildings, such as unwanted heat losses, energy inefficiency and risk of legionella.


Type Name Language Valid for Updated Download File type
Data sheet - AI CCR2+ English Multiple 29 Oct, 2018 617.7 KB .pdf
Brochure - AD CCR2+ Electronic controller to prevent legionella in DHW systems English Multiple 26 Sep, 2018 1.0 MB .pdf
Data sheet - AI MTCV English Multiple 04 Dec, 2018 1.4 MB .pdf
Brochure - AD MTCV Thermal balancing valves - Optimise the performance of domestic hot water systems English Multiple 23 Oct, 2018 1.4 MB .pdf
Brochure - AD Optimise performance in domestic hot water systems Polish Poland 23 Oct, 2018 798.5 KB .pdf
Brochure - AD Optimise performance in domestic hot water systems Hungarian Hungary 23 Oct, 2018 828.5 KB .pdf
Brochure - AD Optimise performance in domestic hot water systems Swedish Sweden 23 Oct, 2018 856.8 KB .pdf
Brochure - AD Optimise performance in domestic hot water systems Danish Denmark 23 Oct, 2018 652.4 KB .pdf

Tender texts

MTCV – Thermal balancing Valves

Domestic hot water installations should be balanced with thermostatic balancing valve for a constant water temperature in the system with following characteristics:

  • Temperature setting range: 35 - 60 °C
  • Temperature pre-setting values visible on a visual scale
  • Setting should be hidden or lockable to prevent unauthorized change (Allen key)
  • Thermostatic module should be integrated to ensure accurate temperature control
  • Optional upgrade with thermal disinfection module to prevent Legionella bacteria in hot water systems: - automatic (self-acting) disinfection or electronically controlled disinfection (controller with thermal actuator and temperature sensors)Disinfection upgrade can be done during operation, under pressure
  • Thermo element should be replaceble for easier
  • Material in contact with water should be compliant with No Lead Brass EU directive
  • Valve body should be made of Bronze for better durability and corrosion resistance
  • Water temperature measurement should be optional
  • Valve should have flow indication mark
  • Reliable packaging for safe transport and handling

Product characteristics

Pressure class: PN 10

  • Maximum medium temperature: 90°C[MP3]
  • Connection size: DN 15-20
  • Connection type: Internal thread ISO 7/1
  • Maximum differential pressure: 100 kPa
  • Factory pre-setting: 50 °C
  • Installation: valve should be mounted in the circulation pipe


Danfoss C.H. software

Our advanced Danfoss C.H. software will help you to design and calculate the perfect heating or cooling installation with Danfoss products.


Design Support Center

Do you need support with designing an energy efficient heating or cooling system? Ask your Danfoss representative and provide him building drawings (.dwg, .dxf) and your requirements. He can have the Danfoss Support Centre to take a look and prepare you a detailed system proposal.


  • Legionella prevention, the smart way
    Monday, September 24, 2018

    For many years Danfoss has played an important role to establish safe Domestic Hot Water systems in hospitals, hotels, multi-family apartments and other buildings. Now our MTCV thermal balancing valves and new CCR2+ electronic controller for automatic disinfection have been significantly improved to your benefit.