Jamesbury™ Quadra-Powr™ Actuators

For Use in Both Modulating Control and On/Off Service

Jamesbury QPX spring diaphragm actuators provide smooth, efficient quarter-turn operation for both modulating control and on-off service. Built for exceptionally long cycle life, they reliably operate almost any rotary valve—even under minimal supply pressure.

Mechanical lock-out, 100% adjustable stop, fast operation and manual override.

Available in: New England and New York

Key Features

  • Model series: QPX
  • Pressure class rating: 20 - 100 psi
  • Media: Air, water, mineral-based hydraulic fluid
  • Temperature range: -20 to 150 °F
  • Action: Single Acting
  • Torque output: 15 to 796 Nm (11 to 587 lb-ft)
  • Mechanical lock-out, 100% adjustable stop, tropicalization for wet and humid environments, fast operation and manual override

Downloads

Valmet Jamesbury QPX Actuator

Additional Links for Jamesbury™ Quadra-Powr™ Actuators

Technical Bulletin Quadra-Powr™ Webpage by Valmet