Pneumatic Lined Stem Discharge Control Valve (Rising/Lowering)

The Pneumatic Lined Stem Discharge Control Valve (Rising/Lowering) are specifically designed for bottom discharge applications in reaction vessels, storage tanks, and other containers. Conventional fluoropolymer-lined ball-type discharge valves often fail to meet the demands of extreme conditions involving strong erosion, easy crystallization, and high flow resistance. The valve features a simplified structure with an extended valve seat reaching the vessel bottom plane. Its conical plug sealing mechanism, coupled with bottom flange mounting, completely eliminates residual media accumulation at container outlets. All wetted surfaces-including the valve interior and internals are lined with high-temperature molded fluoro-polymers, creating a complete corrosion barrier between aggressive media and metallic components. With excellent sealing, fast actuation, and precise flow control, these valves achieve reliable on/off control when paired with pneumatic actuators, solenoids, and limit switches. Ideal for handling acids, alkalis, salts and other highly corrosive media.