1. Indicator - Pneumatic actuator position indicator with NAMUR is convenient for mounting accessories such as Limit Switch box, positioner and so on.
2. Pinion - Pneumatic actuator pinion is high-precision and integrative, made form nickelled-alloy steel, fully conform to the latest standards of ISO5211, DIN3337, NAMUR. The dimensions can be customized and the stainless steel is available.
3. Actuator Body - According to the different requirements, the extruded aluminum alloy ASTM6005.The actuator body can be treated with hard anodized, powder polyester painted ( different colors are available such as blue, orange, yellow etc. ), PTFE or Nickel plated.
4. Endcaps - Pneumatic actuator Die-casting aluminum powder polyester painted in different colors, PTFE or Nickel plated.
5. Pistons - The twin rack pistons are made form Die-casting aluminum treated with Hard anodized or made form Cast steel with galvanization. Symmetric mounting position, long cycle life, and fast operation, reversing rotation by simply inverting the pistons.
6. Travel adjustment - The tow independent externaltravelstop adjustment bolts can adjust± 5° At both open and close directions easily and precisely.
7. High-performance springs - Preloaded coating springs are made form the High-performance trial for resistant to corrosion and longer service life, which can be denounced safely and conveniently to satisfy different requirements of torque by changing thequantity of springs.
8. Bearings & Guides - Aluminum Alloy Rack Pinion Pneumatic Actuator Air Quarter Turn Actuator ISO5211/DIN3337 made from low friction, long-life compound material, to avoid the direct contact between metals. The maintenance and replacement are easy and convenient.
9. O-rings - NBR rubber O-rings provide trouble-free operation at standard temperature ranges. For high andlow temperature applications Viton or Silicone.

• Rack & pinion design
• Compact and light weight
• ISO 5211 mounting pattern
• Adjustable stops for both open and closed positions
• Accessory mounting dimensions to NAMUR specifications
• Machined gear teeth provide longest life and smoother operation
• High cycle life with low friction bearings on all moving and sliding surfaces
• Safety contained springs prevent hazards of inadvertent ejection during maintenance
• Modular design utilizing same body and end caps for both double-acting and spring-return versions
• Corrosion resistant with hard anodized body, PTFE coated end caps, and stainless steel fasteners

AT series Pneumatic Actuator is made of dual pistons driven by racks and pinions. There are two models. One is Dual Acting model, and the other is Spring Return model, which can suit various flammable, corrosive, dusty, strong magnetic field, radiation, vibration corrosive environment indoor or outdoor.

Auto-control in the field of electric power, petrochemical, metallurgy, petroleum, gas, town, construction, drainage, chemical industry, oil refining, mining, power plant, metallurgy, architecture, medicine, food, gas, scientific research, etc.