Genuine DeWalt NA017407 check valve for compatible DeWalt cordless and mains air compressors, including the DCC1018 and DCC1020 series. This replacement valve forms part of the compressor air system and helps control airflow within the tank and hose assembly to maintain correct compressor operation. Suitable for replacing a worn, damaged or leaking original valve and manufactured to the correct DeWalt specifications for precise fit and reliable performance.