Johnson Controls C-130-1 C-130 Comparator for Remote Adjustment [Refurbished]

The C-130 Comparator is a pressure actuated device that applies its output pressure to pilot a pneumatic controller or operate a controlled device in accordance with pressure signals received from two other sources. In effect, the device "compares" the two signal pressures to determine its output pressure.. Johnson Controls. Johnson Controls. C-130-1.