PROPORTIONAL PRESSURE REGULATING 2 Position, 3 Way Bottom Cylinder Port ¦ Designed for pilot control of directional valves. ¦ Low Hysteresis. ¦ One piece cartridge housing ensures internal concentricity. ¦ Coil: Waterproof, hermetically sealed, requires no O’Rings; Symmetrical coil can be reversed without affecting performance. OPERATION De-energized, high inlet pressure at port 2 is reduced down to base setting at port 3 with port 1 referenced to tank pressure. Regulated pressure at port 3 increases proportionally to input current to maximum setting provided inlet pressure exceeds that setting. Back pressure at port 1 is additive to the valve setting.