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Working principle of pneumatic actuator of single acting plate solenoid valve. Two five-way solenoid valves are generally equipped with double acting pneumatic actuators. Two five way solenoid valve control in the switch when the two positions. The five-way solenoid valve has five ventilation channels, one of which is connected to the air source, and two are connected to the entrance of the outer cavity of the double-acting cylinder. The working principle of double acting pneumatic actuator can refer to this actuator. For the air channel (or liquid channel), two three solenoid valve inlet (air source), outlet (for the target equipment air source), outlet (generally installed with a silencer, do not worry about noise). The double-sided five-way solenoid valve has an air inlet (connected with the air inlet source), a positive air outlet, a reverse air outlet (respectively for the target equipment to provide positive and negative air outlet), a positive and a reaction air outlet. In terms of electrical performance, under normal circumstances, two three-way solenoid valve with single electric control (that is, single coil), two five-way solenoid valve with double electric control (that is, double coil). Coil voltage grade is generally DC24V,AC220V and so on. Two three-way solenoid valve is divided into normally closed and normally open.