Electric two-way valve that the Crown brand Specifications Model Number perfect way to complete Unit Check Price Negotiable unit price of RMB 150 shipments limited specification, quotation No relevant manuals and drivers download download No other information related to download a product Obviously crown DN20 said electric valves used to control water pipe fan coil open, close, to achieve the purpose of the control room. Drive by way hysteresis synchronous motor drive, with a spring return actuator. When the valve is not working in a normally closed state, when the need to work, provided by an open room thermostat signal to the electric two-valve power and action, open the valve, chilled water or hot water into the fan coil, for room provide cold or heat; when the temperature reaches room thermostat set point, the room thermostat to make electric two-valve power, reset spring action so that the valve is closed, thus cutting off the flow of water into the fan coil. By closing and opening the valve, so that the room temperature is always maintained at a temperature range of the thermostat setting. Second, the technical characteristics of forged brass body, stainless steel stem and spring. Synthetic rubber valve, close the valve when no bubbles. Normally closed valve KV (CV) values ??can be field selectable. Drive provides high and low voltage models, flexible application. AC hysteresis synchronous motor, quiet operation, the torque constant. Graphic design, taking action when a small outside space, can be installed close to the wall. The drive can be installed after the valve body is mounted. Two fan coil control: two type F-05 LCD thermostat + VA7010 electric two-way valve two type F-05 LCD thermostat + DN20 electric valve four fan coil control two type F- 05 LCD thermostat + VA7010 electric two-way valve two type F-05 LCD thermostat + DN20 electric valve electric heating fan coil control electric heating thermostat F-05 LCD + VA7010 electric two-way valve electric heating F- 05 LCD thermostat + DN20 electric valve