... pressure switch, pressure control 3-phase, air compressor switch, air compressor switch, air pump switches The FB-18(3-Phase) ... capable of field adjustment. It features different diaphragms for compatibility with a wide variety of fluids, and ... set point integrity. It can be widely used for pool and spa, anti-skid braking systems, water ... /cm2 = 14.2PSI 3-phase pressure switch for air compressor