ZRLP/M - BWG electric bellows control valve, consists of 3810 series (or PSL series), electronic electric actuators and low flow resistance of the valve body, the electric actuator has integrated structure, with servo amplifier, input control signals (4-20 madc or 1-5 VDC) and the power to control the valve opening, reach the working parameters such as pressure, flow, liquid level, temperature regulation. Electric bellows regulating valve spool adopts up-guide structure with compact structure and S streamline flow channel, which makes the pressure drop loss small, flow rate large, adjustable range wide and high accuracy of flow characteristic.The upper cover of the electric bellows regulating valve adopts the bellows sealing structure, which is suitable for the adjustment of extremely cultivated, inflammable, explosive, volatile and rare precious metal medium. Electric bellows regulating valves can also be used in vacuum situations.