... butterfly valve,Website:http://www.hugo-valve.com, double flange triple offset butterfly valve, tricentric butterfly valve manufacturers and ... the main features of double flange triple eccentric butterfly valve are as bellow : 1, small open torque, flexible and convenient. 2, three ... .S.316L, duplex S.S. Applicable standard Size Range: 4~80"(DN100~DN2000) Pressure: PN10, PN16, PN40,PN64, Class 150 ...