Main Parts of Butterfly Valve
Body + Buttferfly board + gluesheath + hand shank + axis + screw bolt+disk +pin+high-molecular cover + O type ring
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DN100 4"market
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DN100 4" Jinerjian butterfly valve
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item
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material
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material and features
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product
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handle butterfly valve weight 3.14kg, worm one weight 5.44kg. Cold spray,only used indoor
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handle butterfly valve weight 5.26kg, worm one weight 7.34kg Unique appearance, meets GB, ANSI, JIS standard, spraying under 2 times high temperature, never fade. 24 months guarantee
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body
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cast iron,weight 1.56kg,hollow, rudeness,can't ensure concentricity
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cast iron,3.14kg, be processed under CNC lathe. Solid, drilled by machine,ensure the concentricity, reduce friction effectively. can supply ductile iron, cast steel, stainless steel 304, 316, 316L etc
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seat
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renovated rubber, includes 5% natural rubber, hard,low flexibility, easy leakage after several times
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EPDM seat, includes 50% natural rubber, -20-120℃,long service life, test results show rubber has no influence after open and shut 6000 times. can supper NBR, PTFE, CSM, Viton, silicone rubber and CR
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disc
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weight 0.46kg, hollow,withstand 10bar pressure
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0.56kg,solid,working pressure is 30 bar. can supply ductile iron, cast steel, stainless steel 304, 316, 316L etc
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stem
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0.28kg,length 275mm, diameter 12mm,black iron stem,easy to rust
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0.44kg,290mm,diameter 16mm, made from galvanized cold drawn steel, smooth and anti-rust, reduce friction effectively
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bushing
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only use 1 rubber O-ring
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yellow bushing,made from waterproof and wear resistant material after 16 processes,each valve has 4 bushings+1 O-ring, 5 steps reach zero leakage
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bolt+nut
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2 sets 6*20 galvanized bolts and nuts
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10*30 2 sets color bolts with two pairs gaskets to prevent loosen when pipe shock
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handle
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length 230mm, weight 0.32kg
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length 260mm,scientific design, labour saving ,weight 0.36kg can supply pressed chromium handle, aluminum handle etc
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dick
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1.2mm thickness
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2mm thickness can supply pressed chromium plating disc and aluminum disc
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gearbox
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weight 1.7kg, cover with paint
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weight 2.04kg, spraying frosting
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test pressure
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spot check,10 bar test pressure
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every butterfly valve has to tested on both sides before delivery,test pressure can reach 20 bar, national standard only request 17.6 bar
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1,We can match different materials about plate and stem,such as stainless steel according to special working condition.
2,Also we can match the different rubber ring according to the different medium such as NBR,PTFE,CSM,EPDM,CR and other rubber.