Campbell Hausfeld TQ900400AJ Valve Plate Assembly

The Campbell Hausfeld/SPEEDAIRE TQ900400AJ Valve Plate Assembly is a quad valve plate replacement for Campbell Hausfeld air compressors, designed to replace the valve plate assembly in the VT470-series pumps with the four valves already installed. The kit includes the valve plate with all four valves installed and the upper and lower gaskets; no additional components are included. Old part numbers associated with this assembly are TQ011300AJ and VT470800AJ, identifying its use within the VT470 family of Campbell Hausfeld compressors and indicating cross-compatibility with related units. The TQ900400AJ valve plate assembly is referenced in Campbell Hausfeld service literature as the valve plate replacement for this line, and is commonly sourced through Campbell Hausfeld parts channels and compatible Speedaire units. Typical maintenance applications include rebuilds, pump head refits, or repair of worn or leaking valve assemblies in VT470-series units. When installed, it serves as a direct replacement for the original valve plate assembly, restoring the prescribed four-valve configuration in serviced compressors, and is intended for use by technicians performing routine maintenance or component-level repair on Campbell Hausfeld equipment.