MAPS series is a gear rack type stainless steel pneumatic actuator, with compact structure, reliable design, characteristics, suitable for the on-off control of butterflfly valve, ball valve and rotary valve which in harsh, corrosive working conditions. MAPS series Stainless Steel Pneumatic Actuator •MAPS Series Stainless Steel Actuator are constructed with a compact and reliable design to offer innovative, effificient and high performance. All models are suitable for both on/off and control applications. ·MAPS Series Stainless Steel Actuator is well suited for automating butterflfly, ball, and plug valves in harsh, corrosive environments.  The CF8/CF8M Stainless Steel construction provide perfect internal and external corrosion resistance, ensuring the actuators ideal for marine, chemical, mining, sanitary, food and beverage and pharmaceutical applications. ·NAMUR Mounting: MAPS Series Stainless Steel Actuator meet NAMUR standards VDI/VDE 3845 for accessory mounting. The NAMUR mounting patterns allows for the direct mounting with both accessories such as limit switches and positioners ect. and controls without additional tubing or fifittings. ·Corrosion Resistant Materials: All external components are 300 series stainless steel. The wire of springs is coated by telflflon painting for internal corrosion resistance. ·Bi-directional Travel Stops: The two independent external travel stops allow for adjustment counterclockwise positions at±5° overtravel in each direction of both clockwise and counterclockwise positions at ±5° overtravel in each direction. ·Field Reversible Action: Direct and reverse actions accomplished by simply rotating the pistons 180°. ·Interchangeability: One design for spring return and double acting actuators allows for maximum interchangeability. ·Concentric Nested Spring Design: Signifificantly reduces the number of parts and allows for maximum spring gage and cycle life. ·Wide Size Range: Wide size range offers optimum actuator sizing. ·ISO Valve Mounting Pattern: Actuators conformed with ISO5211 standards for mounting directly to valves without additional brackets or adapters. The double square shaft is standard. ·Position indicator: The position indicator provides clearly visible indication