Quality Lab


      D-Series NEMA 4X Differential…

      D-Series NEMA 4X Differential Pressure Switch


      The Ashcroft® D4 Differential Pressure Switch is designed for use on most applications requiring reliability and long-cycle life. Ideal for satisfying requirements for pressure control, shutdown or alarm operations.

      Key Features:

      • Adjustable setpoints from 15%-100% of range
      • Fixed or limited adjustable deadband
      • Wide selection of switch elements and wetted materials
      • Specials designs for NACE and fire-safe applications
      • Internal set point lock screw


      • Accuracy: ±1% full scale
      • IP66 (NEMA 4X) aluminum enclosure
      • Single setpoint
      • SPDT or DPDT switching option
      • Differential pressure ranges: 75 mbar to 42 bar


      The D4 Differential Pressure Switch is ideal where accurate and reliable pressure measurement are essential:

      Process Market:

      • Offshore Oil Rigs
      • Chemical and Petrochemical Plants
      • Pulp and Paper Mills
      • Power Plants
      • Steel Mills
      • Water and Sewage Treatment Facilities

      Industrial Market:

      • Pumps, Compressors and Turbines
      • Boilers and Burners
      • Degreasers and Evaporators
      • Recovery Systems
      • Reverse Osmosis Systems / Filters
      • Food Processing
      • Ground Support Equipment
      • Hydraulic and Lubrication Systems
      • Heating and Air Conditioning
      • Marine Equipment
      • Specialized OEM Equipment

      Certificates & Approvals

      • CE
      • CSA
      • EAC
      • FM
      • RoHS
      • SIL
      • UL