Campbell Hausfeld CW211300AV Pressure Switch Four Port

The CW211300AV Campbell Hausfeld four-port pressure switch with a 90-degree unloader is a genuine replacement part that provides automatic on/off control for air compressors by responding to tank pressure and cycling the motor. Its four-port manifold and built-in unloader valve vent the pump head when the cutout pressure is reached, enabling a smoother restart and reducing motor wear during cycling. The unit is specified for a 150/120 psi cut-in/cut-out operating range, aligning with Campbell Hausfeld service specifications for this model and matching the needs of standard open-frame and compact compressors that rely on a CW211300AV switch. Designed for easy installation in a 90-degree configuration, it supports common plumbing layouts and wiring arrangements found in Campbell Hausfeld equipment. As a direct replacement part, it helps maintain consistent tank pressure, predictable cycling, and reliable compressor operation across repeated on/off cycles in residential, shop, and light-industrial applications that use Campbell Hausfeld control components.