Presco-Switch® 
The Presco-Switch® is a pressure-responsive device that opens or closes one or more integral electrical switches at predetermined set points in order to:
- start or stop pump motors for pump jacks and electric submersible pump systems
- stop gas engines
- control valve operations
Switch Features –
- Convenient microswitch adjustments make field setting easy.
- Versatile switching arrangements satisfy most applications.
- Switch housing's explosion-proof design is CSA approved for Class 1, Group D, Division 1, Hazardous Locations.
Pressure Sensing Base Features –
- Pressure sensing bases use diaphragms, plungers or bellows.
- Interchangeable springs enable each basic unit to be used for a variety of pressure ranges.
- Accurate operation and repeatability are provided by the smooth plunger movement and precision manufacturing.
- Long life is ensured by a guided plunger, resulting in a useful life that exceeds other types of pressure switch mechanisms.
- High proof pressure is provided by a positive plunger stop so that the Presco-Switch will withstand overpressure and surges.
- Rugged design enables the Presco-Switch to withstand severe operating conditions including shock, vibration and corrosion.
- Standard male 2" NPT pressure sensing connection provides a solid mount that will not plug off or freeze readily.
- Certificate of authorization issued by ABSA is 0F08082.2.
