Electric two-way valve principle and installation

Electric two-way valve principle and installation: 1. Electric two-way valve used to control the cold water or hot water air-conditioning system pipe opening or closing, to achieve the purpose of controlling room temperature. 2. The drive is driven by a single-phase hysteresis synchronous motor, the valve spring is reset, the valve is normally closed when the valve is not working, and when the work needs to be done, the thermostat provides an opening signal to make the electric two-way valve turn on the AC power and act . 3. Open the valve, chilled water or hot water into the fan coil for the room to provide air-conditioning or heating, when the temperature reaches room temperature set point, the thermostat makes the electric two-way valve power, the return spring to close the valve, Thereby cutting off the flow into the fan coil, closed and opened by the valve, so that the room temperature is always maintained in the temperature set temperature range. 4.VA7010 series electric two-way valve drive and valve with threaded connection, the valve can be installed, and then install the drive. Field assembly, flexible wiring, convenient. The planar design of the drive can be installed close to the wall, occupying a small footprint, reliable and durable products, low noise and reliable work in the high temperature and humidity environment in the coiled fan coil unit. Electric two-way valve installation and commissioning: Before installation must read the instructions, cut off the power and must be installed by professional and technical personnel. The flow direction must be the same as the direction of the arrow on the valve body. The valve body must be above the coil water tray to ensure that dripping falls into the water tray. The valve body and actuator must be mounted within ± 60 ° C vertical and at least 30 mm above the space for disassembly. With the surrounding pipelines, equipment, buildings must maintain sufficient space for maintenance operations, must be installed in the maintenance personnel through the manhole to reach the place. The valve body can be installed after pressure test and pressure test. If the actuator is already attached to the valve body, never apply force to the actuator during installation and commissioning as this may damage the actuator. After installation and check the correct, power debugging. At a minimum, observe the three full drive cycles and verify that all components are correct. After passing through the anhydrous test, pass the water test. System pressure drop on the water must be strictly controlled within 0.15MPa, to ensure that the electric control valve on the effectiveness of the water switch. Electric two-way valve scope of application: air conditioning, heating, ventilation, domestic hot water and other civil-level chemical, petroleum Metallurgy, light industry and other industries in the production process of automatic control.