This 90-degree pressure switch unloader valve is a replacement accessory for CW217400AV and CW218100AV pressure switches used on air compressors. It forms the 90-degree portion of the unloader assembly, routing air from the pump head to the atmosphere when the pressure switch opens. Designed to fit CW217400AV and CW218100AV configurations, it complements the standard unloader tube arrangement and provides a dedicated unloader path for those model lines. Commonly used with Campbell Hausfeld CW-series pressure switches to facilitate proper unloading of air during cycling.
