Vatac Valves (Quzhou) Corp is one of the best China marine cast steel butterfly valve manufacturers,Website:://.vatacvalve.net, welcome to wholesale cheap marine cast steel butterfly valve from our factory.Marine Cast Steel Butterfly ValveMarine Butterfl ValveVatac Marine Butterfly Valves are mainly offered in Wafer and Lug Styles, which is provided in a complete line of materials in Cast Steel, Cast iron or Cast Bronze. Standards to JIS, ASME or Equivalents. Sizes from DN50~DN800. Ratings available in 5K, 10K, 16K or ASME CL125