The thermostatic filling valve VTC422 is used for filling storage tanks and particularly for protecting the boiler from low-temperature corrosion up to a capacity of 150 kW. The valve ensures a stable higher return water temperature to the boiler throughout the combustion process. This reduces tar formation, increases efficiency, extends the boiler's lifespan, and reduces its emissions. The thermostatic filling valve is suitable for installation on the return line to the boiler or for filling storage tanks.

Features Adjustable return water temperature Pressure class: PN 10 Medium temperature: 0...100 °C Return water temperature: 52-72 °C ± 3°C External thread Connection: G 1" Dimension DN 25 Easy maintenance Solid fuel boilers up to 33 kW

Valve Function

The valve contains a thermostatic cartridge that opens inlet A when the temperature of the mixed outlet water at outlet AB reaches a specified °C. If the temperature at inlet A exceeds the nominal opening temperature by 10 °C, inlet B will close completely. It is recommended to use ball shut-off valves in the application to facilitate any potential servicing.

Service and Maintenance

The thermostatic filling valve VTC 422 requires no special maintenance under normal operating conditions. Spare parts are available for all main components of the valve. Parts can be replaced without the need to remove the valve from the application.