The Black Diamond® Tank Drain Valve is a genuine replacement part designed to restore proper sealing and drainage on your air compressor. Ideal for replacing a worn or leaking drain valve, this wing style valve helps prevent unwanted air and water leakage when the compressor is not being drained. Featuring a 1/4 in. NPT connection, it creates a snug, secure fit to reduce seepage and improve overall compressor reliability and performance.