while the externally equalized design with a 1/4" ODF flare nut ensures accurate pressure sensing at the evaporator outlet

replacing an aged or fouled cad cell is a standard procedure to restore reliable cad cell resistance readings

the 026-36401-000 is the official technical substitute for older part numbers including 026-36402-000 and A4332502

making it a universal 24V solution

United Electric H54-25 Pressure Switch 319825-402 while the externally equalized designThe United Electric H54 25 Pressure Switch is a heavy duty, field adjustable control engineered for reliable setpoint monitoring in industrial HVACR and process systems. Formerly identified by factory stock number 9516, this model is a direct equivalent to the H54 25 9516, offering a versatile 10100 PSI adjustable range. Designed with a Single Pole Double Throw (SPDT) snap acting switch, it provides high capacity electrical ratings of 15A at 125 250