... , Degree range: 8 to 60PSI (55 to 414kPa), Operation differential pres Differential Pressure ControllerCharacteristics Single-pole, double-throw, totally enclosed non-snap acting ... changed without removing the coverSimilar to Johnson P74JA floating differential pressure controlFunction ProductP74JA differential pressure controlPower24VAC, 1A, 50/60HzDegree range8 to 60PSI (55 to ...