These Legend Valve butterfly valves are a lug design which permits single flange (dead end) installation. They are made of ASTM A-126 cast iron. They have an aluminum bronze disc and stainless steel shaft. They offer a bubble tight seal and are bi-directional flow. The extended neck is ideal for insulated pipe. The lever handle has ten positions. Intended for general piping applications requiring a positive shut-off. Five-year warranty.