Asahi/America
Redesigned butterfly valve comes in a variety of polymers
Extending its existing Type-57 family of butterfly valves, the new Type-57P butterfly valve (photo) has been redesigned with an ANSI wafer-style connection. This new valve shares the same face-to-face dimensions as all similarly sized Type-57 butterfly valves. New features of the Type-57P include two molded tag holes in the valve body for user-defined valve identification, and a highly visible throttle-positioning plate. The plate, which features an opening degree legend in 10-deg increments, makes accurate throttle positioning between zero deg (closed) and 90 deg (open) possible. The Type-57P’s body and disc are injection-molded for durability, and the 316 stainless-steel stem is non-wetted. A variety of sizes and materials are available (including polyvinyl chloride, chlorinated polyvinyl chloride, polypropylene and polyvinylidene fluoride), and all sizes can be electrically or pneumatically actuated. — Asahi/America, Lawrence, Mass.