Made with high-temperature tolerant Teflon® seals, our Full Port Ball Valve with Weldless Bulkhead provides excellent flow through with no pressure loss due to it's full bore port. The Weldless Bulkhead comes with the seals and lock nuts needed to install the valve in any thin-walled container. Drill a hole 13/16? to 7/8? wide, mount the valve, and tighten the nut.