Add a ball valve to your cooler or kettle or whatever without welding and using the upgraded high temperature red silicone flat washer. The flat washer seals on more surface area than the round washers and ensures a leak free connection. This weldless kit includes a 1/2" Full Port ball valve and a 1/2" barb. All fittings are made from 304 type stainless steel for a lifetime of corrosion free use. Full installation directions included. The whole size needed is already built into the igloo and rubbermaid coolers, 7/8".