3-way valve 20mm with modulating electric drive

A set of 3-way ball valve 20mm - 25000 tenge + LR24A-SR Electric drive for smooth control of valves 50000 tenge Total for the set 75000. The principle of operation is based on the smooth closing or opening of the control valve while maintaining a constant flow of coolant through the heat exchanger, but the temperature changes in the supply pipeline by mixing the flows of the return and supply coolant after the bypass line. Thanks to this regulation, protection against freezing of the coolant and accurate maintenance of the air temperature after the heater in the ventilation system are ensured.