Campbell Hausfeld CW218900AV Pressure Switch MDR12 4 Port 160-200 PSI

CW218900AV is Campbell Hausfeld's MDR12 four-port pressure switch designed for use with select Campbell Hausfeld portable air compressors, featuring a 160–200 PSI cut-in/cut-out range. The four-port manifold supports integrated pressure sensing and unloader functionality, enabling automatic tank shutoff as pressure reaches the set point and restart when pressure falls. It is listed as an original equipment replacement for Campbell Hausfeld models HJ300100 and HJ300200, and includes a 1/4" quick-connect fitting for the unloader line along with a cord clamp for secure mounting. This pressure switch is designed to drop into compatible MDR12 4-port assemblies, providing a straightforward, factory-accurate replacement path for maintaining compressor performance without additional modifications.