Diaphragm Type Pneumatic Actuators

The HPD series pneumatic actuator is a lightweight, compact diaphragm-type linear actuator delivering high output force. It operates by applying air pressure to a diaphragm plate, which simultaneously compresses the spring mechanism. The thrust generated on the effective area of   the plate drives the push rod in linear motion. Widely applied in control valves and other precision linear control systems requiring high accuracy.

Design Features

• High Reliability & Long Service Life: The surface treatment employs epoxy electrostatic powder coating, providing exceptional adhesion and corrosion resistance. The diaphragm utilizes a specialized molding process with burst strength exceeding 22 kg/cm², significantly enhancing overall operational lifespan.

• Excellent Linearity: The molded diaphragm moves within the diaphragm chamber with minimal change in effective area during travel, ensuring superior linear performance.

• High Output Force: The molded diaphragm and cold-stamped diaphragm housing withstand elevated pressures, enabling maximum thrust generation.

• Rigid Connection: The clamp-style stem connection reliably transmits motion while facilitating installation. By eliminating linkage mechanisms, it prevents positioning inaccuracies caused by connection backlash.

• Wide Applicability: Five sizes of direct-acting and reverse-acting actuators enable diverse applications. With customizable spring ranges, adjustable travel stops, and optional handwheel assemblies, they accommodate virtually any control valve requirement.

  
  

Thrust Parameters