Johnson Controls P74BA-1 Pressure Control 30067439-890 Built with a sleeve bearing

Built with a sleeve bearing system and automatic thermal protection

the HU-225-2-MA supports a wide 12-40Vdc supply voltage and includes an unpluggable terminal block for simplified wiring

Common culprits include moisture buildup in the silicone tubing

providing the reliable timing required for professional-grade staging and sequence of operation

this squirrel cage wheel is factory-balanced to eliminate the vibration and harmonic noise often associated with aftermarket alternatives

Johnson Controls P74BA-1 Pressure Control 30067439-890 Built with a sleeve bearingThe Johnson Controls P74BA 1 is a robust differential pressure control designed for demanding commercial HVACR applications, including chiller proof of flow and refrigeration compressor lube oil monitoring. Engineered with stainless steel bellows, this SPST pressure switch effectively measures the variance between two sensing points, opening the circuit on a decrease in pressure difference. This action is critical for protecting equipment from low