Campbell Hausfeld TF000021P Unloader Valve 5 16 Tubing

TF000021P (also listed as TK000021P) is Campbell Hausfeld’s unloader valve designed for a 5/16" tubing connection, with the cross-reference ST065700AV identifying the same component in parts catalogs. It is sold as a replacement part for Campbell Hausfeld systems and kits, including references to SK103400AJ in retailer listings. The 5/16" tubing specification guides the hose fitting size required for installation within the pressure-switch/unloader circuit of compatible Campbell Hausfeld compressors. This valve is categorized as an unloader valve, a component used to manage the unload cycle when the compressor starts and stops, ensuring proper operation of the pressure switch assembly.