... ://www.hugo-valve.com, flanged butterfly valves, worm gear flange butterfly valve, cast iron flange butterfly valve manufacturers ... Hugo Valve Co.,Ltd is always at your service. Gear operated flange butterfly valve Description 1,compact and lightweight, ... Standard : ANSI,DIN,JIS End Connection: flange Operate: Manual, worm gear, double acting & spring return pneumatic actuated and electric motorized. ...