Normally closed electric valve

Normally closed electric valves are used to control the opening or closing of pipes in cold or hot water air conditioning systems to control the valve temperature. The driver is driven by a one-way hysteresis synchronous motor, and the valve spring returns. When the valve is not working, it is in a normally closed state. When it needs to work, the thermostat provides an opening signal, which causes the electric valve to be connected to the AC power supply and act. When the valve is opened, chilled water or hot water enters the fan coil to provide air conditioning for the room. Or heating. When the room temperature reaches the set value of the thermostat, the thermostat cuts off the electric power, and the return spring closes the valve, thereby cutting off the water flow entering the fan coil unit. By closing and opening the valve, the room temperature is always maintained within the temperature range set by the thermostat.

The electric valve is a high-end product among automatic Universal Valve. It can not only realize the switching function, but the regulating electric valve can also realize the valve position adjustment function. The stroke of the electric actuator can be divided into two types: 90° angular stroke and straight stroke. Special requirements can also meet the full stroke of 180°, 270° and 360°. A angular-stroke electric actuator is used with a angular-stroke valve to achieve internal rotation of the valve within 90° to control pipeline fluid on-off; a straight-stroke electric actuator is used with a straight-stroke valve to realize the up and down movement of the valve plate to control pipeline fluid on-off. The valve is fully open or fully closed, and this valve does not need to control the flow of the medium.