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Electromechanical Pressure Controls

P74 Series: Differential Pressure Control (Adj. Differential)

P74 Series: Differential Pressure Control (Adj. Differential)

Description

Series P74 measures the pressure difference between two sources: supply lines and return lines. A change in differential pressure will reposition the switching mechanism to cause corrective action of the supplementary control equipment.

Features

  • Field-proven Pennswitch with a completely enclosed contact mechanism.
  • Pressure differential setting is easily changed without removing the cover.

Applications

  • Differential pressure sensing on chillers or water-cooled condensers.
  • Lube oil failure cutout for refrigeration compressors (same as the P28, but does not incorporate time delay).
  • Positioning M100 Series motor-actuated valves (P74JA-2).
  • To prove pump operation

Selection Chart

P74 Series: Differential Pressure Control (Adj. Differential)
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