RS Pneumatic Actuators. RS pneumatic actuator valves for the moving or controlling of mechanisms or systems. Features:. Indicator:. A position indicator with NAMUR mounting as standard. Pinion:. The hardened alloy steel pinion is precision ground and nickel plated to reduce friction. Actuator Body:. Hard anodised aluminium body to protect against wear. End Caps:. Epoxy covered die cast aluminium end caps providing maximum resistance against corrosive elements. Pistons:. The precisely balanced pistons are fitted with high quality rings and guides. High Performance Springs:. High tensile steel springs coated with zinc phosphate. O-rings:. NBR O-rings provide trouble-free operation