12V Linear Electric Gate Valve Control Pneumatic Multi Turn High Speed Rotary Hydraulic Air Industrial Waste Treatment Modulating Quarter on off Actuator

12V Linear Electric Gate Valve Control Pneumatic Multi Turn High Speed Rotary Hydraulic Air Industrial Waste Treatment Modulating Quarter on off Actuator. hick end cap, excellent resistance against air supply working pressure. Deep spring bore for reliable spring positioning. Dark finish after four times hard anodizing treatment, excellent abrasion & damage resistance. Black piston with anodizing & deep finishing treatment, high hardness and convenient for spring assembly. Material: Grade 65 carbon steel.