National Standard Pneumatic Actuator-Cylinder

Here is the rewritten and improved version of your content in English, with a more natural, human-like tone and expanded to exceed 500 characters: --- **Product Specifications:** - **Model No.:** AT32-AT400 - **Trademark:** Standard or Customized - **Specification:** AT32-AT400 - **Origin:** China - **HS Code:** 8412390000 This pneumatic actuator is designed for high-performance industrial applications. It features a multi-function position indicator with a NAMUR standard mounting groove, making it easy to attach accessories like valve positioners or limit switches. The output shaft is a high-precision one-piece gear made from nickel-plated alloy steel, meeting ISO5211, DIN337, and NAMUR standards. It can be customized in size and is available in stainless steel for special requirements. The cylinder body is made from ASTM6005 extruded aluminum with hard oxidation treatment. Surface options include epoxy, PTFE, or nickel plating for enhanced durability. The end caps are die-cast aluminum alloy with various color powder coatings, as well as PTFE or nickel plating options. The pistons are double piston racks made from cast aluminum or galvanized cast steel, offering symmetrical installation, fast operation, long life, and easy reversal for directional control. Stroke adjustment is achieved through two external independent screws, allowing precise ±5° adjustments for both opening and closing positions. The high-performance spring is a combined preload spring using premium materials, coated and pre-pressed during assembly. It offers excellent corrosion resistance and long service life. It’s also safe and simple to disassemble and replace springs in single-acting actuators to meet different torque requirements. Low-friction, long-life composite materials are used for bearings and guides to prevent metal-to-metal contact, making maintenance and replacement easier. Sealing is done with nitrile rubber O-rings at normal temperatures, while fluorine or silicone rubber is used for high or low temperature environments. --- **Product Images:** [Image 1: National Standard Pneumatic Actuator-Cylinder](http://i.bosscdn.com/uploads/49/08/43/89a12f1f181c7f2f00c62d480c.jpg) [Image 2: National Standard Pneumatic Actuator-Cylinder](http://i.bosscdn.com/uploads/40/cd/6e/f63d76d49923c28354a5668e77.jpg) [Image 3: National Standard Pneumatic Actuator-Cylinder](http://i.bosscdn.com/uploads/72/92/a7/566e3912aaf484c1cb08af1507.jpg) [Image 4: National Standard Pneumatic Actuator-Cylinder](http://i.bosscdn.com/uploads/ea/e6/7f/b2ea215114e9a8cfdb130e3c0a.jpg) [Image 5: National Standard Pneumatic Actuator-Cylinder](http://i.bosscdn.com/uploads/3c/ba/a1/4c29a53b93e59dd5b24d1a8e3d.jpg) [Image 6: National Standard Pneumatic Actuator-Cylinder](http://i.bosscdn.com/uploads/64/6f/51/a790bd2698a70aca5669480f54.jpg) --- Let me know if you'd like this adapted for a product page, catalog, or marketing material!

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