pneumatic wafertype butterfly valve

pneumatic wafer butterfly valve: HS Code: 8481804090Connection Form: WaferWork Pressure: Mid-Pressure (2.5mpa< Pn <6.4mpa)Seal Form: MetalMaterial of Seal Surface: MetalStructure: Three-Eccentric Center Sealing Because this butterfly valve adopt three-dimensional eccentrie to design, makes the movement track on facing space reachto idealization, and there are no attrition and on intervene between hermetical components, furthermore, the hermetical material has been selected reasonably, thereby it ensure hermetic, Antisepsis, wearable caoability of valve. The main characterstic as below:1. Tiny moment for starting, for starting, flexible and convenient, save labor and energy.2. Three-dimensional eccentric comfiguration forces disc close tighter, and reach to reliable hermetic capability and with noleakage.3. Lthascharacteristicof high temperature, high pressure resistant, antisepsis, wearable, long service life etc.parts nameMaterrialBODYCast iron,stainless steel, Cr.MO. Steel/Alloy SteelDISCCast iron,stainless steel, Cr.MO. Steel/Alloy SteelSEALStainless steel and higj temperature resistant asbestos composed of multiple layersSTEM2Cr12.1Cr13 ,Stainless steel,Cr.MO.SteelAXLETEE304 nitrificationPACKINGFlexible graphiteLEAKAGE<0.1*DNmm3/sAPPROPRIATE TEMPERATURECarbon steel :-29 celsius 425 celsiusDRIVE MODALITYworm wheel drive.gas drive.electric drive