Telco Envirotrols Inc.

Women's Business Enterprise National Council

 


Specializing in Environmental Equipment, Controls, and Parts


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P12 Series

Differential Pressure Controls

Description

The P12 series Differential Pressure controls are suitable for use with oil and/or non-corrosive refrigerants.  The switch is actuated by a difference in pressure between the two sensing elements.  The control is factory-set to open the switch (COM to 1) at a differential pressure of 18 psi (124 kPa) and close the switch (COM to 1) at a differential pressure of 12 psi (83kPa).  The control is not field-adjustable.

This control may be connected to a P28 lube oil control, with time delay, to give complete monitoring of lubrication on two refrigeration compressors driven by one motor.

Selection Chart

Code Number Differential Pressure Maximum Overpressure, psig (kPa) Enclosure Fitting
COM to 1 OPENS COM to 1 CLOSES
P12AA-3C 18 psi (124 kPa) 12 psi (83 kPa) 500 (3447) NEMA 1 Enclosure 1/4 in. male SAE flare fitting
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Last modified: 05/07/08