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Center Disc Rubber Butterfly Valve Features 1.Simple structure, compact, lightweight, easy to assemble and repair. 2.Low operating torque, open and shut quickly just turn 90degree. 3.Low flow resistance, flow characteristic approximates tilt line, energy-saving. 4.Reliable seal, zero leakage, long service life 5.Can be made from various materials, applies to various medias cast iron butterfly valve Size: DN40-400mm Rating: PN10/16, ANSI125/150 Material of main parts Body: Cast iron, ductile iron, stainless steel, cast steel (WCB) Disc: Monel, ductile iron, stainless steel, ductile iron with nylon coated Seat: EPDM or NBR or PTFE Stem: SS416 or SS316. Pin: SS316 Operated: Handle or wormgear, pneumatic, electric actuator Butterfly valve seal material choice and apporpriate tempersture Material variety Neoprene Styene rubberEPDMPTFESilicon rubberFluorine rubberResistance highest temperature 82°C93°C150°C232°C250°C204°CResistance lowest temperature -40°C-40°C-40°C-268°C-70°C-23°CSuitable working temperature ≤65°C≤80°C≤120°C≤200°C≤200°C≤180°CThe contrast between Jinerjian butterfly valve and common one in marketitemNameJinerjian butterfly valve DN100Common one DN1001.bodyCast iron, weight 3.14kg,the paint is processed under two times high temperature, never fade outdoor,Unique appearance,meets GB,ANSI,JIS standardBody weight 1.56kg, normal paint in normal temperature2.seatEPDM rubber,includes 50% natural rubber,working temperature -20-120°C,long service life,Test results show rubber has no influence after open and shut 6000 times ,can supper NBR,PTFE,CSM,Viton,silicone rubber,CR seatMade from renovated rubber, include 5% natural rubber, easy leakage after 5 times3.disc0.56kg,solid,working pressure 30 bar, can supply ductile iron,cast steel,stainless steel 304,316,316L etc discCast iron, hollow 0.46kg4.handlelength 260mm,scientific design,labour saving ,weight 0.36kg can supply pressed chromium handle, aluminum handle etcLength 230mm, 0.32kg, iron, easy to burst in winter 5.diskthickness 2mm,can supply pressed chromium plating disc and aluminum discGalvanize,1.2mm thickness6.Gearbox 2.04kg, spraying frosting1.78kg, coat with lacquer7stem0.44kg,length 290mm,diameter 16mm,made from cold drawn steel,galvanized surface,smooth and anti-rust,reduce friction force between bushing and stem effectively,can supply cast steel, stainless steel 304,316,316L etc stem 0.26kg, black stem8bushingyellow bushing,made from waterproof and wear resistant material after 16 processes,each valve have 4 bushings+1 O-ring,5 steps make valve zero leakageOnly use one bushing9.bolt+ nut10×30 plating color machine bolt& nuts with metal gasket, effectively prevent loose when pipe shock6×20 bolt 10.Test pressureevery butterfly valve have to testing on both sides before delivery, the test pressure can reach 20bar,the national standard only request 17.6barsample testing pressure 11.weight 5.26kg3.14kgNote: 1.All of our butterfly valves are backed by 24 months guarantee. 2.We can match the different rubber ring according to the different medium conditions, such as NBR ,PTFE, CSM, EPDM, CR,Viton and other rubber materials. 3.We can match different materials about body, plate and stem, such as ductile iron, cast steel, stainless steel 304,316,316L according to special working condition. 4.If the valve leakage after two years service, just remove handle then add a bushing to prevent leakage , need not disassemble the valve or change a new one, very economic.