Double Eccentric Flange Butterfly Valve

Double Eccentric Flange Butterfly Valve General: Double eccentrice end flanged resilient sealing butterfly valve is operated by the disc rotaing from 0 to 90.can be applied to cutoff or regulate the flow of media . Vireous enamel is available upon request .valve can be actuated by operating lever, handle wheel, electric actuator or pneumatic actuator Professional design: When init iating the rotary opening movement the disc is off-seated after only few degree Of opening movement and there is very little wear and tear between seat ring and disc. Stainless steel seatring is rolled into the valve body by applying special rilling technology when DN ≤ 1200.Uitrasonic spray applies seall of valve body when DN ≥1400 Body and discmade of ductile iron which promote the impact resistance and pressure-bearing capacity; sealing ring made of rubberand valve seat’s sealing ring surface is conicalshaped , make the sealing capacity more reliable . Excellent corrosion protection: Inside electrostatic epoxyesin powder coating or vitreous enamel(upon request ), outside electrostatic epoxy resin powder coating Reliable health nature : Epoxy resin powder is up to the health standard GB/T 17219-1998 Scope of application: Scope of app;ocation: Scope of app;ocation: Potable water supply and distribution, electric power plant, gas supplu, warm-air system, smelling plant ,chemical industry. 1.Design to EN593BS5150 2.Face to face:DIN3202 F4 (EQUAL)ISO 5752 SERIES 14 BS5150 (EQUAL)ISO 5752 SERIES 13 3.Flange:DIN2501 BS4504 4.Top Flange:ISO 5211 5.Work Temperature:EPDM<120 NBR<80 6.Can be 100% shut off in both direction 7.Meterial: NUMNameMeterial 1 Body Ductile Iron(GGG50) 2 Seat of body Stainless steel(304) 3 Disc seat ring Rubber(EPDM OR NBR) 4 Disc seat ring cover Ductile Iron(GGG50) 5 Disc Ductile Iron(GGG50) 6 Down shaft Stainless steel(420) 7 Disc cover Ductile Iron(GGG50) 8 Up shaft Stainless steel(420) 9 Bolt Stainless steel(A2) 10 Wormgear actuator (for handwheel operation) 11 Handwheel Ductile Iron(GGG50) 12 Bolt Stainless steel(420) 13 Shaft end cover Ductile Iron(GGG50) 14 Down shaft bearing Stainless steel withPTFE lining 15 Up shaft bearing Stainless steel withPTFE lining 16.Vave inside an outside to be FEB coating no less than 250 micron 17.Sea worthy packing 18.May the handwheel, the worm gear, electrically operated, air operated, the fluid move the operation