Description The Powermate ball valve kit is part of the large Powermate genuine replacement parts line. The Powermate ball valve kit makes it easier to drain a compressor of excess moisture at the end of use. The ball valve kit replaces the drain valve most compressors come with.3/8 in. ball valve, with 3/4 in. NPT (M) x 3/8 in. NPT (F) bushing and 3/8 in. x 3/8 in. NPT pipe fittingReplace non working compressor drain valve with a Powermate ball valvePowermate ball valve kit comes with the fittings needed to replace a leaky drain valve or an old ball valveFor optimal performance compressor should be drained after each use