WELDLESS BULKHEAD KIT 4PC for BREW KETTLE or WHISKEY STILL - STAINLESS STEEL 1/2" NPT HOMEBREW EQUIPMENT Fittings kit to mount 1/2" NPT Ball Valves to brew kettles or whiskey stills Works on Brew Kettles, Whiskey Stills, and Sparge water pots Just add teflon pipe tape to where the nut will be. See photos for installation