Campbell Hausfeld CW218000AV Air Compressor Pressure Switch

The Campbell Hausfeld CW218000AV Pressure Switch is an OEM replacement part for Campbell Hausfeld stationary air compressors that automatically cycles the pump based on tank pressure. It targets a 135 psi to 175 psi activation window (roughly 135 psi to start, 175 psi to stop) and uses a 1/4" NPT threaded port for standard plumbing to the compressor head and tank line. Campbell Hausfeld installation literature also notes that this switch is designed to work with an unloader valve to vent residual pressure when the switch opens, enabling a quicker restart after shutoff. As an OEM CW218000AV replacement, it is intended for use on Campbell Hausfeld stationary units and provides the essential on/off control that energizes the motor at the low setpoint and de-energizes it at the high setpoint to maintain the desired system pressure. In related diagrams and catalogs, CW218000AV is listed as the compatible pressure switch for 140–175 psi class Campbell Hausfeld compressors, with tank gauges typically referenced as up to 300 psi in the same system context.