Campbell Hausfeld CW207561AV is a single-port pressure switch for air compressors offering a 135 psi on (cut-in) and 175 psi off (cut-out). It functions as the automatic motor-control switch that starts the compressor when tank pressure drops to 135 psi and stops it near 175 psi, with an unloader valve available separately (CW000200AV) to vent the head and speed up re-starts. This CW207561AV replacement part is designed for Campbell Hausfeld gear that requires a 135/175 psi switching range.
