General Purpose Commercial Wafer Body Style Butterfly Valves fit either ANSI Class 125 or Class 250 Flanges. Valve Body shall be cast Grey Iron ASTM 126 Grade B. Valve stems are to be constructed of 304 Stainless Steel. The disc material is 316 Stainless Steel. The seat material is EPDM. The stem seals O-rings are made of EPDM. Valves 2” - 8” are lever operated, and valves 10” and larger can be gear operated, unless automatic operation is preferred. Wafer Style Butterfly Valve are suitable for air service for temperature up to 250°F. Wafer Body Butterfly Series 2300 is provided by J&S Valve - Huffman, Texas.