... cheaper price Features:1. Size: 2"to48"wafer type, lug type and double flanged type2. Materials: Body: Cast ... iron, carbon steel, 304S. S, 316S. S and aluminum bronze. Disc: Ni-plated ductile iron, Nylon coated ... ductile iron, 304S. S, 316S. S, aluminum bronze and monel. Shaft: 416S. Sand316S. S, 17-4PH. Seat ... for a temperature between -30º C and 230º class150 blue paint wafer butterfly valve