Johnson Controls (PENN) P170AB-2C, Pressure Control; 20"/100 PSIG 5 Bu Diff. Adj 6/50 Psi;

Johnson Controls (PENN) P170AB-2C, Pressure Control; 20"/100 PSIG 5 Bu Diff. Adj 6/50 Psi;. Johnson Controls P170, P70 and P72 series were designed for dual pressure applications for commercial refrigeration and air conditioning systems, or high- and low-pressure requirements. These dual-pressure controls devices are used for tasks like high-pressure cutout, head-pressure control, and condenser fan cycling.