American Hydroponics Ball Valve, 1/2", pack of 10
American Hydroponics Ball Valve, 1/2", pack of 10 at HorticultureSource.com -
American Hydroponics 1/2" Ball Valve (Stopcock valve) with barbed fittings. Comes in packs of 10. This black 1/2-inch nylon inline ball valve with double-sided barbed fittings is perfect for adjusting flow rates.