Flange Type Butterfly ValveHuachao Flange Type Butterfly Valve to design novel small overall size, light ... tags: Flange Type Butterfly Valve, China manufacturer, factory, mill, supplier, cheapFlange Concentric Butterfly ValveThe Flange Concentric Butterfly Valve is widely used for ... PN10, PN16Material: cast iron and ductile iron, carbon steel, stainless steelStandard: ISO 5152, BS5155, API 609, MSS-SP- ...