12V Linear Gate Valve Control Electric Pneumatic Multi Turn Cylinder Rotary Hydraulic CE ISO9001 Spring Return High Speed Air Action Aluminum Ball Actuator

12V Linear Gate Valve Control Electric Pneumatic Multi Turn Cylinder Rotary Hydraulic CE ISO9001 Spring Return High Speed Air Action Aluminum Ball 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.