Product Introduction

A Rack and Pinion Pneumatic Actuator is a device that utilizes compressed air to drive a rack-and-pinion mechanism, thereby enabling 90-degree opening and closing control of valves. It is suitable for automated ball valve and butterfly valve systems and is widely applied across the petroleum, chemical, water treatment, and energy industries.

Technical Parameters

Actuator Body	Corrosion-protected aluminium extruded body.
Caps	Aluminium extruded caps suitable for single-and double-acting actuators.
Piston and Pistons	Die-cast aluminium pistons with high-quality O-rings.
Shaft	Nickel-covered steel or stainless steel.
Springs	Cartridge design, preloaded.
Nuts and Bolts	Stainless steel, high corrosion resistance.
Stroke Adjustment	Permit adjustment of 3%–5% in both directions.
Connections	SSolenoid Valve, Limit Switch Box, Positioner: NAMUR V DINDE3845.
Valve Montage Compatibility	Ball, Butterfly, and Plug Valve: ISO 5211, DIN 3337 standard.
Air Quality Requirement	ISO 8573-1:7-4-4 (Particle-Water-Oil).

Core Advantages

Stable and Reliable Output Torque: Utilizing a precision gear-and-rack mechanism, it delivers high transmission efficiency and uniform, stable output torque, ensuring precise and error-free valve opening and closing operations.

Rapid Response: With a simple pneumatic drive structure, it offers fast opening and closing speeds, making it ideal for high-frequency operating conditions and enhancing overall system automation efficiency.

Superior Sealing Performance: Features high-performance seals combined with an anodized cylinder body, providing exceptional resistance to both wear and corrosion.

Customization Capabilities

Torque Range	Customized based on valve size and operating conditions
Air Supply Pressure	2–8 bar (supports special operating conditions)
Material	Aluminum Alloy / Stainless Steel / Special Corrosion-Resistant Materials
Actuation Type	Double-acting / Single-acting (Spring Return)
Mounting Standard	ISO 5211 / NAMUR Interface
Optional Accessories	Solenoid Valve, Limit Switch, Positioner, Air Preparation Unit

Factory Capabilities

Scaled Production, Stable Delivery

Featuring proprietary assembly lines and standardized production processes, we support the rapid delivery of large-volume orders.

High Machining Precision

Equipped with CNC machining centers and precision gear processing equipment to ensure transmission accuracy and consistency.

Comprehensive Certifications

Compliant with international standards such as ISO and CE, meeting the requirements for export and project procurement.

End-to-End Quality Control

From raw materials, machining, and assembly to airtightness and functional testing-quality control is strictly maintained throughout the entire process prior to factory release.

FAQ

Q: I only know the valve size; can you help me select the right model?

A: Yes. Simply provide the valve type, size, and pressure rating, and we can directly determine the required torque and recommend the appropriate model to prevent selection errors.

Q: What if I'm concerned about insufficient torque or incorrect model selection?

A: We calculate a safety margin based on your specific operating conditions and provide a selection confirmation to ensure a perfect match between the actuator and the valve.

Q: Can I request a sample first?

A: Yes, we support sample requests and small-batch trial orders to minimize the risk associated with our initial collaboration.

Q: Can the delivery time be expedited?

A: We maintain stock of standard models or prioritize them for rapid production scheduling; urgent orders can be given priority processing.

Q: Can you manufacture products under our own brand?

A: Yes, we offer OEM services, including customization of logos, nameplates, colors, and packaging.

Q: Do you offer competitive pricing?

A: As a direct factory supplier with large-scale production capabilities, we offer more stable pricing that is ideal for long-term, bulk purchasing.

Q: Can you supply the accompanying accessories as well?

A: Yes, we provide a one-stop solution that includes solenoid valves, limit switches, positioners, and other accessories, delivering a complete, integrated package.

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