1-Piece Reduced Bore Ball Valve, Screwed Ends, Pressure Rating 2000 WOG (Sizes 1/2"-1") and 1500 WOG (Sizes 1 1/4"-2") , FNPT Ends, Available Sizes (1/2" - 2"). Materials: Body (1/2"-1 1/4"): Carbon Steel ASTM A108 C12L14, Zinc Phosphate-Coated, Body (1 1/2"-2"): Carbon Steel ASTM A216 GR. WCB, Phosphate-Coated, Ball & Stem: Stainless Steel ASTM A276, Type 316.