Ashcroft PD-Series NEMA 7 Differential Pressure Switch

The Ashcroft® PD differential pressure switch was designed for use with harsh applications where uncompromising protection is required. It combines field-proven technology, stability and long cycling, making it ideal for satisfying pressure control, shutdown or alarm operations.

Key Features:

  • Explosion proof housing
  • Dual chamber design allows for field calibration to be performed safely even with the power connected
  • Wide selection of switch elements and wetted materials
  • Multiple process connection available
  • Adjustable setpoints from 15%-100% of range
  • Fixed or adjustable deadbands


  • Accuracy: ±1.00% full scale
  • NEMA 7/9 (IP66) aluminum enclosure
  • Single or dual setpoints
  • Differential pressure ranges: 30" IWD to 400 psid

The PD differential pressure switch is ideal where accurate and reliable pressure measurement are essential:

Process Market:

  • Refineries
  • Chemical and Petrochemical Plants
  • Water and Sewage Treatment Facilities
  • Steel Mills                                                                       

Industrial Market:

  • Pumps, Compressors and Turbines
  • Boilers and Burners
  • Reverse Osmosis Systems

Please Contact Us for more detail