Stagnant water in hot water pipes can be a breeding ground for legionella bacteria, especially if the water temperature is between 20 and 45 °C. If you install a HWC in the domestic water system, you get a circulating flow at the right temperature. You also gain other benefits.




How do you know if you have hot water circulation (HWC) in your domestic water system? If you live in a property with several floors, you will easily notice it when you turn on the hot water tap on the upper floor and the hot water comes almost instantly. The HWC ensures that the hot water circulates in the hot water pipes at all times and therefore there is always hot water available near the tap.
If you lack an HWC, you have to wait for hot water for several seconds because the hot water comes from the water heater. The longer the hot water has to travel, the longer it takes for the hot water to reach the tap. In a multi-family property and larger properties, it can take 20-30 seconds before the hot water reaches the tap.




Stagnant hot water compared to circulating hot water

Legionella is a bacterium that can cause two types of disease, Legionnaires’ disease and Pontiac fever. You can read more about legionella on the website for Health and Security.
The bacteria survives and grows in stagnant hot water temperatures of 20–45 °C. By installing the circulation kit ESBE VTR300/VTR500, the hot water circulates and is always at the right temperature. The circulation kit also gives you direct access to the hot water and you don’t have to be afraid of scalding because the ESBE series VTR300 and VTR500 are equipped with anti-scald protection.






Complete with ESBE series VTF320 for large tap water systems

The larger the loop in which the hot water circulates, the more hot water is used because the hot water is cooled as it circulates in the pipes. With the ESBE thermostatic flow limiting valve series VTF320, you can rest at ease knowing that energy consumption within the system is optimized. The valve closes the parts of the system that have reached the right temperature and thus less hot water is used to keep the loop warm.




More benefits with ESBE VTR and ESBE VTF

•    ESBE’s brass valves for domestic tap water all contain lead levels below the applicable limit values (including EU’s new Drinking Water Directive).
•    The products are developed to be energy-saving and reduce your operating costs
•    The valves and circulation sets are manufactured in ESBE’s factory in Sweden
•    ESBE is one of Europe’s leading manufacturers of products for heating, cooling and tap water systems


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