There are two types: D71 series butterfly valve, D73 series eccentric butterfly the manual D71F46 clip-lined butterfly valve factory butterfly valve type. Using the two-body combination valve seat and valve body lined integration, valve work, the only all-plastic seat with plastic-lined butterfly valve plate contact with the media, the valve can withstand the introduction of lining material corrosion medium, The electrode sealing structure at the sealing surface of the rubber elastic gasket SI together with the anti-aging temperature completely reached zero leakage of the medium. , Structural features, butterfly valve for the entire disc and the valve seat in the 360 ??° circumference concentric (neutral), with bi-directional sealing, pressure, flow can be adjusted freely; eccentric butterfly valve two-dimensional direction of the eccentric cam effect make Sealing generate sufficient sealing pressure than better sealing effect, and with the rise of the working pressure; 3, four loaded elastic sealing to ensure that the valves inside and outside the zero leakage. a: the shaft and butterfly one outside F46 for lining; B: shaft end face with the rigidity of the elastic O-rings and shaft shoulder washer, the elastic rubber matting; c: radial shaft O-ring and metal sleeve combination; d : seat inlaid with elastic strip valve body groove. 4, using the elastic gasket accurate positioning, simple structure. 5 the clip-lined butterfly valve is lined valve series is used widely as a butterfly valve design compliance GB/T12238, API 609, MSS SP-67 standard, Drive Manual, worm gear, pneumatic, electric lining fluorine valve http://www.sqcffm.com metal seal butterfly valve http://www.lidavalve.com naughty fort http://www.kaibotoy.com