Champion Z-TD-1 Automatic Drain Repair Kit

Champion Z-TD-1 Automatic Drain Repair Kit, part # Z5941, is a complete overhaul solution for rebuilding the Champion Z-TD-1 automatic tank drain valve used on Champion air compressors. It includes a full set of replacement components—diaphragm (TD9), valve disc (TD3), valve spring (P01882A), valve stem (TD7), and backup disc washer (TD18)—plus timer-related parts: timer body (TD5), timer screw (TD6), timer lock nut (M2399), and ATD valve timer assembly. By substituting these worn elements, the kit restores the valve’s automatic condensate drainage function without replacing the entire valve assembly. This repair kit is designed for Champion ZTD1 automatic tank drains (also marketed as Z-TD-1) and is commonly used during maintenance or repair when components such as the diaphragm or timer have degraded. Typical applications include Champion air compressors where reliable moisture removal is essential to prevent water buildup and potential corrosion or regulator performance issues. The Z5941 identifier designates this specific overhaul kit; for a new valve replacement, Champion offers AS-2201-04 Automatic Tank Drain Valve for ZTD1.