... High performance butterfly valve: 1,flange type,size: 2" -72", 2,rating:150lb-600lb 3,Suitable medium: water, oil, vapor. Dual-clamp Butterfly Valve ... Dual-clamp butterfly valve is an advanced valve in the short distance between flange ... and suitable mediumis infinite UsageForms of operation: Manual,worm wheel, electric pnumatic hydraulic ally. These valves ...