Mechanical Pressure Switches

Mechanical pressure switches, also known as hydroelectric pressure monitors, are used to connect or disconnect electric circuits. A pressure switch can serve as a control unit and as an optical or acoustic monitor or indicator.

Diaphragm Pressure Switches

  • D1S/D2S; D1T/D2T; D1X/D2X; DPD1T/DPD2T

Bourdon Tube Pressure Switches

  • B1S/B2S; B1T/B2T; B1X/B2X

Dia-Seal Piston

  • E1S; E1H; P1H; P1X; MSPS

Compact Pressure Switches

  • Series 8000; Series 9000; Series 9671X/9681X/9692X; KLK/KLM; KD1


  • Accuracy: ±1 % / ±2 %
  • Process connection (without Adaptor): 1/4“NPT female, 1/2“NPT female, 1/8“NPT female/male
  • Number of Contacts: 1 or 2
  • Vibration Tolerance: Good / Excellent
  • Protection Class: IP65 / Plug IP65, cable IP67
  • Approvals: Exi, Nace / Exi and Exd, CSA, UL, Nace/ Exi and Exd, UL/ GL, Exi, cULus/ Exi and Exd, UL, CSA, ATEX
  • Adjustment ranges: -1 … 10.3 bar


  • Machine and tool engineering,
  • Autoclave, Pump control,
  • Refrigerant monitoring,
  • Petrochemical industry,
  • Process technology,
  • Filter monitoring,
  • Hydraulic power units