Product Description
Field-Proven Penn Switch With A Completely Enclosed Contact Mechanism. Pressure differential setting is easily changed without removing the cover. 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). 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. made in United States. Manufactured by Johnson Controls.. Johnson Controls. Johnson Controls. P74FA-5C.