Material: Brass, Rubber Brand: Uxcell Exterior Finish: Brass, Rubber Inlet Connection Size: 12mm Inlet Connection Type: Barb Outlet Connection Type: Valve 12mm Hose Barb x 12mm Hose Barb Ball Valve. For pipes with an inner diameter of 12mm (or less than 12mm) Ball valves are mainly used for on-off control or flow adjustment of water, oil, and gas. Typical uses include garden irrigation systems, plumbing systems, water pumps, compressors, oil and gas supply systems, and hot and cold water systems. Compatible with all types of tubing. Insert the barb into the tube and secure with a pipe clamp to seal (clamps are not included here). If the barb is too large for the tube, you can soak the tube in boiling water or use a heat gun. A little heat will help the tube to fit perfectly. Made of durable and corrosion-resistant brass. It has a rubber-covered operating handle for non-slip control. #nagojiroꕤ୭ Instant purchase OK