Precision Sensors
  Gauge Pressure Switches
Gauge Pressure Switch

Gauge Pressure Switch P18M Series

The P18M design, which features a polyimide pressure sensor, offers increased sensitivity in the lower pressure ranges typically encountered in engine bleed air and fuel pressure applications. Polyimide sensors have incredible cycle life, outstanding temperature performance and wide media compatibility. A negative rate Belleville spring is utilized to ensure stable set points over the life of the unit even during severe shock and vibration. Housings are available in both aluminum and stainless steel depending on weight and fitting requirements.


Gauge Pressure Switch P18M Series

Media Gas or Liquid
Type Factory Set
Sensor Type Polyimide Diaphragm
Available Settings 5.0 - 60 PSIG
Actuation Value 1.0 PSIG + 9% of Setting
Repeatability ± 0.5 PSIG + 2% of Setting
Proof Pressure 500 PSIG
Operating Temp. Range -65º to 250º F
Wetted Materials Polyimide Diaphragm, Elastomer Seal,
Al or SS Housing
Pressure Interface Pipe Fitting, MS Fitting
Electrical Rating Up to 7 Amps
Electrical Connections Mil. Spec. Connectors,
Free Leads
Typical Weight .26 lbs
Qualification Consult Factory
Warranty 18 Months
Options Environmentally Sealed, Hermetically Sealed,
High Temperature


  • Negative-rate belleville spring design for longer life, accuracy and repeatability
  • Durable and media resistant polyimide diaphragm 
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Milford, CT 06460
Tel: (203) 877-2795
Fax: (203) 877-8752