How many types of Hebei electric explosion-proof butterfly valves are electric 1m? Generally, the basic protection method for overload is: for overload protection of continuous operation or inching operation of motor, thermostat is used; Thermal relay shall be used for motor stall protection; For short circuit accident, fuse or overcurrent relay shall be used.
、 Introduction to seven commonly used electric ball valves
1、 Q941F electric flange ball valve: Q941F electric flange ball valve is suitable for two position blocking and conditioning. The electric switch type ball valve is directly connected to the actuator. The electric actuator is equipped with a built-in servo system, without additional servo amplifier. The operation can be controlled by inputting 4-20mA signal and 220VAC power supply. The utility model has the advantages of simple connection, compact structure, small size, light weight, small resistance, stable and reliable action, etc. Product name Electric flange ball valve Product model Q941F Product diameter DN15-DN300 Product pressure 1.6MPa-6.4MPa Product raw material carbon steel, stainless steel
