Thermic 3-way valve ESBE series VTC500 designed to protect boilers up to 150 kW from return temperatures that are too low. Maintaining a high and stable return temperature means a higher level of boiler efficiency, reduced tarring and increased life span of the boiler. In most applications, the valve is installed either in the return pipe to the boiler or in the accumulation tank feeding pipe.

Usage

• Heating

The glycol content of the medium is max. 50%. In the case of glycol concentration of 30-50%, the flow rate is reduced by approx. 30-40% and there is also a change in thermal conductivity.

Valve function

The thermostatic valve can be used as a diverting or mixing valve. The valve contains a thermostat which begins to open connection A at an outgoing mixed water temperature in connection AB. Connection B is fully closed when the temperature in connection A exceeds the nominal opening temperature with 10°C. It is recommended to use shut-off valves in the application to facilitate service.

Service and maintenance

The VTC 500 thermostatic filling valve does not require any special maintenance when operating under normal conditions. Spare parts are available for most major parts. It is not necessary to remove the valve from the application during service.. The thermostatic cartridge can be easily replaced with a cartridge with a different opening temperature

Features

• Medium temperature: 0… 110 °C
• Leakrate A - AB: max 1% Kvs
• Leakrate B - AB: max 3% Kvs
• Max. differential pressure when mixing 1bar / when distributing 0.3bar