Heavy Duty Scotch Yoke Pneumatic Actuator

Description

Designed for demanding applications, the HPA-G Heavy Duty Pneumatic Actuator delivers up to 270,000 Nm of torque with IP67 protection and ISO 5211 compatibility. Featuring a modular design, superior corrosion resistance, and safety-optimized spring modules, it ensures reliable performance in harsh environments. Ideal for large-diameter valves and 90° rotary applications.

NAMUR Mounting

The accessory mounting holes of HPA-G series pneumatic scotch yoke actuators are in accordance with NUMAR standard, which is convenient for mounting position switches, positioners and other accessories.

1. IP67 Protection Rate

HPA-G series pneumatic actuators are equipped with high-qualitysealing rings in the connecting parts such as box body and boxcover, and the protection level can reach lP67, which can workcontinuously and stably in harsh environment and climate.

2. ISO Connection Dimension

The fange size of HPA-G series scotch yoke actuators and valvesmeets lS0 5211 intemational standard, which is convenient forcustomers to install, disassemble and replace.

3. Internal Tie Rod Cylinder Design

The cylinder with internal pull rod design is simple andgenerous in shape. Under the same cylinder diameter, theouter diameter of the cylinder with internal pull rod design issmaller than that with external pull rod design. At the sametime, the pull rod inside the cylinder can support and guidethe piston to prevent the cylinder from eccentric wear, so asto make the action more stable and prolong the service life.

4. Security Spring Module

The spring module is fixed into an integral form afterthe spring is compressed, which improves theoperation convenience and safety when installing andmaintaining the spring module.

5. Large Torque Range

The HPA-G Series double-acting actuators provide a torque outputof up to 270000 Nm, and the single-acting actuators provide atorque output of up to 120000 Nm (operating pressure 3-7 bar).

6. Modular Design

HPA-G series pneumatic actuators can be divided intodrive module, cylinder module, spring cylinder module,manual device and other independent modules,which can be installed and maintained according tocustomers” individual needs.

7. Protection Coat

Shot blasting and grinding before spraying make the surfaceof the product smoother and fatter. HPA-G series scotch yoke actuators aresprayed with epoxy zinc-rich primer and polyurethanetopcoat, and the coating thickness, firmness andanticorrosion performance meet the requirements of differentharsh environments.

Working Technical Conditions

Multi-Function Modules

Drive Module:

1. The materials of the box body and the fork are ductile iron, which has better corrosion resistance,wear resistance and hiah separation:
2.The limiting device can provide angle adjustment of +6°;
3.lt can provide torque output of up to 270000Nm;
4. Have a variety of sealing methods, and choose high-quality and high-performance seals to ensure that internal parts are not corroded and improve their service life.

Cylinder Module:

1. The cylinder is seamless steel pipe and ground, and the inner wall ofthe cylinder is plated with hard chromium or Teflon coating and polishedwhich has anti-corrosion, anti-rust and high wear resistance andprolongs the service life of the cylinder;
2. The piston rod is made of alloy steel, with chrome plating and mirrortreatment, which is anticorrosive; Rust prevention and high wear resistance;
3. The overall cylinder design makes the cylinder very safe under highpressure;
4. The inner surface of the cylinder is coated with high-performance grease, which can self-lubricate, thus reducing friction loss and cylinder service life.

Spring Module:

1. After tensile test and fatigue test, the life of the spring can reach500,000 times,and the surface is anticorrosive and antirust;
2.The sealing welding design structure enhances the operation safety;
3.Epoxy coating provides continuous anti-corrosion performance forprestressed spring;
4. The steel spring seat is completely isolated from the externalenvironment;
5. A hydraulic module can be added inside to provide a variety of manual control modes.

Product Structures