Flange Type Butterfly ValveHuachao Flange Type Butterfly Valve to design novel small overall size, ... tags: Flange Type Butterfly Valve, China manufacturer, factory, mill, supplier, cheapFlange Concentric Butterfly ValveThe Flange Concentric Butterfly Valve is widely used ... 5, DIN 3202End connection: FF, RFOptional seating: resilient, NBR, EPDM, VITONActuators: manual, pneumatic, electric, hydraulic