The VA7010 series switch type electric valve consists of a VAA7010 series valve driver and a VAV7010 series copper valve. Used to control the opening or closing of pipelines in cold or hot water air conditioning systems, achieving the goal of controlling room temperature. The driver is driven by a unidirectional hysteresis synchronous motor, and the valve spring is reset. When the valve is not working, it is in a normally closed state. When it needs to work, the temperature controller provides an opening signal to connect the electric valve to the AC power supply and activate it. When the valve is opened, chilled water or hot water enters the fan coil unit to provide air conditioning or heating for the room; When the room temperature reaches the set value of the thermostat, the thermostat cuts off the power to the electric valve, and the reset spring closes the valve, thereby cutting off the water flow into the fan coil. Keep the room temperature within the temperature range set by the thermostat by closing or opening the valve.

The driver and valve body of the VA7010 series electric valve are connected by a screw sleeve. The driver can be installed after the valve is installed and assembled on site, with flexible and convenient wiring.

The planar design of the driver can be installed close to the wall, occupying less space. The product is reliable and durable, with low working noise, and can work reliably in high-temperature environments commonly found in concealed fan coil units.

Main technical parameters of the driver

Material Description
Valve body material: forged brass
Sealing material: Nitrile rubber (NBR)
Driver cover: flame retardant ABS engineering plastic
Medium temperature: ＜ 94 ℃
Valve stem material: stainless steel (A1S162)
Drive chassis: die cast aluminum alloy
Working medium: water
Operation and precautions
The motor casing prevents water from seeping in. When the valve is installed in a horizontal pipeline, the installation position should not exceed an angle of 85 ° with the vertical plane, as shown in Figure 2. When the valve is installed on a vertical pipeline, the motor casing must prevent dripping water from seeping in.
When moving the manual control lever, it should be moved slowly. When the manual lever moves slowly in the direction of the arrow and clicks into the notch, the valve is in a normally open state. Whenever the current first passes through the electric valve, the manual lever will be set to the automatic position again.
Installation instructions
The installation of normally closed two-way valves and mixed three-way valves is shown in Figures 3 and 4. For high-rise buildings, pressure reducing valves should be installed on the bottom branch pipes. When installing the valve body, attention should be paid to the direction of the arrow on the valve body. If there is an auxiliary switch, its wiring is shown in Figure 6.

VA7010 series switch type electric valve