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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