Saunders® P345

Saunders® P345 is a polymer based piston operated pneumatic actuator designed to provide superior performance in Bioprocess applications.

Features and Benefits

  • 4.5 BAR OPERATING PRESSURE: Lower total cost of ownership through reduced air consumption
  • INDUSTRY LEADING CLOSURE PERFORMANCE: Maintains 10 bar at 100% pressure drop for rubber and PTFE diaphragms
  • 30% LIGHT WEIGHT CONSTRUCTION: Lighter construction compared to Stainless steel actuators
  • ZERO MAINTENANCE: Maintenance free plug-n-play reliable operation

Technical Data

Size Range

  • DN8 (0.25") - DN100 (4.00")

Modes of Operation


  • Spring-to-Open
  • Double Acting

Materials of Construction

  • Polymer Cover: Polyamide
  • Bonnet: Stainless Steel
  • Suitable for typical industry wash down regimes*


  • Max: 100°C (14°F)
  • Min: -10°C (212°F)

Accessory Options

  • Saunders-VUE Sensors (direct mount)
  • Limit Open Stop (Spring-to-Close Mode)
  • Positioners


  • Easily retrofitted on existing Saunders valves
  • Unique compressor design for easy diaphragm interchangeability

Product Marking

  • Catalogue Code
  • Valve Size
  • Mode of Operation
  • Operating Pressure
  • Date of Manufacturing


Saunders ® P345 Actuator - Flyer (EN A4)

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Designed and developed by our in-house engineering team,

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