JFD Series Spring Diaphragm Actuator

  • Compact, precise control
  • Easy changeable in field – fail open and fail closed
  • Mounting complies with ISO 5211 standard
  • Three different sizes available for actuation

Features & Benefits

  • ISO 5211 mounting top and bottom
  • Female star drive
  • NAMUR accessory mounting drilling top and bottom
  • Adjustable travel stops for both fully open and fully closed positions
  • High cycle life design
  • Low maintenance
  • Rolling diaphragm for linear torque output for accurate control
  • one piece diaphragm retainer and Nylon bearings for low friction, smooth operation and long cycle life
  • Field reversible for fail open/closed on rotary control valves and high performance butterfly valves
  • Heavy duty ductile iron drive housing and carbon steel diaphragm casing
  • Corrosion resistant epoxy paint and stainless steel external fasteners
  • Wide range of springs: 40 psi, 60 psi and 80 psi


  • Wide range of springs: 40 psi, 60 psi, 80 psi
  • 135 in/lbs – 7,095 in/lbs