The Johnson Controls P74FA-1 is a P74 Series Differential Pressure Control. It is designed to sense the difference in pressure between two points (such as supply and return lines) and provide snap-acting SPDT switching for operating or safety control. The P74FA-1 has an adjustable range of 8 to 60 psi differential pressure with a fixed switch differential of 1.5 psi.

• Type: Differential Pressure Control
• Series: P74FA (part of the P74 family)
• Function: Measures pressure difference across two sensing elements and actuates a switch when the setpoint is reached.
• Applications: Proof of flow across chillers, condensers, heating/cooling coils, and lube oil pressure sensing on refrigeration compressors.

Specifications