4WPS Low Pressure Diaphragm Pressure Switch



  • Suitable for oil and gas, mining and general industrial applications


  • Single or dual set point
  • “Hg to 150 psi pressure range
  • Fixed deadband
  • Simple set point adjustment
  • Anodized aluminum housing with stainless steel diaphragm
  • Hermetically sealed contacts available (excluding vacuum models)
  • ±0.5% accuracy
  • NEMA 4 enclosure rating (NEMA 4X optional)
  • UL approved
  • CRN registered
  • 5 year warranty


Housing Material Anodized aluminum
Accuracy ±0.5% of the adjustable range
Pressure Connection 1/4” NPTF (1/2″ NPTF optional)
Electrical Connection Terminal block through 1/2″ NPTF conduit connector
Wetted Parts 304 SS with FKM
Set Point Adjustment Self locking adjustment screw
Deadband Fixed
Contact Rating

10 amps @ 125/250 Vac

No. of Contacts 1 x SPDT (2 x SPDT optional)
Ambient Temperature -65°F to 165°F (-54°C to 74°C)
Storage Temperature -65°F to 200°F (-54°C to 93°C)
Enclosure Rating NEMA 4 (NEMA 4X optional)
Approvals UL approved, CRN registered
Weight 2.0 lbs (907 grams)
Note: Hermetically sealed option is only available for 1 x SPDT switches

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