Campbell Hausfeld ST095300AV Unloader Kit

Campbell Hausfeld ST095300AV Unloader Kit is a replacement unloading assembly for Campbell Hausfeld air compressors, also cataloged as TW004600AV, TW004700AV, 3Z892, and 3Z893. This kit provides the unloading components needed to vent residual air from the pump head when the compressor shuts off, allowing for a smoother restart and more consistent pressure cycling. Designed for use with Campbell Hausfeld units that originally used the ST095300AV and its related catalog numbers, the kit replaces worn or damaged unloader hardware to restore proper operation of the pressure-switch unloading pathway. It consolidates the essential parts to maintain reliable cycling without requiring a full pump replacement, helping reduce restart strain on the motor and extend the life of the unloading system. Compatible across models and serials that reference these part numbers, the ST095300AV Unloader Kit serves as a targeted maintenance part for repairs where an unloader assembly has degraded or failed. Note: Always confirm that your unit’s part number matches ST095300AV, TW004600AV, TW004700AV, 3Z892, or 3Z893 before purchasing to ensure correct fitment.