Pneumatic Linear Valve Actuator

Description

The HPA-L Series Straight Stroke Pneumatic Actuators are manufactured in strict accordance with quality standards to ensure reliable and safe operation. This catalog presents standard models designed to cover a wide range of applications, and customized designs can also be provided based on user requirements.

These actuators operate using purified compressed air at a gauge pressure of 0.4 to 0.6 MPa as the power source. The air pressure drives the piston to perform a linear motion perpendicular to the fluid direction, enabling the valve gate to regulate, open, or close the flow.

The Pneumatic Linear Valve Actuator is suitable for most types of valves requiring straight stroke motion, including wedge gate valves, flat gate valves, knife gate valves, globe (stop) valves, discharge valves, track ball valves, and track plug valves.

Product Features

Wide Thrust Range
The HPA-L Series double-acting actuators can deliver a maximum output thrust of up to 2,000,000 N. Single-acting actuators are also available with strong output capabilities to meet various application demands.

Multiple Manual Operation Options
HEARKEN offers a wide range of manual operation mechanisms to suit different user needs, including:

1. Overhead screw manual
2. Overhead bolt manual
3. Overhead side-mounted turbine manual
4. Overhead side-mounted bevel gear manual
5. Center-side bevel gear manual
6. Hydraulic manual
7. Fully-sealed side-mounted bevel gear manual (latest model)

Customizable Connection Sizes
The flange connection dimensions between HPA-L Series actuators and valves can be customized according to user specifications, making installation, removal, and replacement more convenient.

Reliable Actuator Selection Based on Experience
For situations where valve thrust data is unavailable, HEARKEN provides actuator selection guidance based on years of engineering experience—ensuring safety and compatibility across various valve types and pressure ranges.

Internal Tie-Rod Cylinder Design
The actuator adopts an internal tie-rod structure, offering a cleaner appearance and a more compact outer diameter compared to external tie-rod cylinders of the same bore. This design also stabilizes piston movement and reduces eccentric wear, improving operational smoothness and extending service life.

Tailored Spring Design
HEARKEN designs custom springs to meet specific thrust and stroke requirements for different valve types and pressures. A comprehensive library of standard spring specifications is also available for common applications.

Durable Protective Coating
Before coating, the surface undergoes shot blasting and polishing for optimal adhesion. Each actuator is treated with an epoxy zinc-rich primer and a polyurethane topcoat, ensuring excellent coating thickness, adhesion, and corrosion resistance to meet various operating environments.

IP67 Protection Level
Both pneumatic and manual components use high-quality sealing elements. The actuator achieves an IP67 protection rating, providing effective resistance to dust and water ingress for reliable outdoor and industrial use.

Working Technical

Product Structures

Double Acting & Single Piston Actuator Output Thrust (Unit:N)

Double Acting & Double Piston Actuator Output Thrust (Unit:N)

Single Acting & Single Piston Actuator Output Thrust (Unit:N)