Milwaukee Valve BB2-102 Series Bronze Butterfly Valve, Unibody, Stainless Steel 304 Disc, Lever Handle with Memory Stop, 3/8" NPT Female Made of bronze for higher strength and corrosion resistance than brass Full port for higher operating efficiency and decreased friction than standard ports 175 pounds per square inch (psi) rating for water, oil, and gas (WOG) Unibody (one-piece construction) valve for reduced possibility of valve leakage Female National Pipe Taper (NPT) threads form a tighter seal than straight threads