Quality Lab


      A-Series Watertight Pressure Switch

      A-Series Watertight Pressure Switch


      The Ashcroft® APA and APS watertight miniature pressure switches are designed for pressure control in harsh applications. Its design allows easy integration into custom equipment or systems. This model is ideal for pressure alarm, shutdown or control where size or compatibility is a consideration.

      Key Features:

      • 316SS enclosure provides uncompromising protection
      • Wide operating temperature (-40°C to 100°C)
      • Factory set or field adjustable setpoint
      • Expanded selection of pressure and electrical connections


      • Accuracy: ±2.00% of span. for ranges 14 bar through 1000 bar
                         ±5.00% of span. for ranges -1/1 bar through 7 bar
      • IP67 (NEMA 6); 316 stainless steel
      • SPDT or DPDT switching models
      • Pressure ranges: Vacuum to 1.000 bar


      The APA and APS watertight miniature pressure switch is ideal where accurate and reliable pressure measurement are essential:

      Process Market:

      • Offshore Oil Rigs
      • Chemical and Petrochemical Plants
      • Water and Wastewater Pressure Control
      • Pulp and Paper

      Industrial Market:

      • Heavy Vehicle Hydraulic Braking
      • Specialized OEM Equipment

      Medical and Life Sciences:

      • Autoclaves and Sterilizers

      Certificates & Approvals

      • CRN
      • CSA
      • EAC
      • RoHS
      • SIL
      • UL