Introduction 

 The butterfly is a newly developed soft-sealing Eccentric Flanged Butterfly Valve, mainly for water, power plants, steel smelting, paper, chemicals, food, and other systems for drainage, especially for water pipes on the road, as regulation and closure devices. 

 Feature 

 A simple and compact structure, light weight, 90 ° rotation, switch quickly. 
 2, designed, easy assembly and disassembly, easy repair. 
 3, the eccentric structure, reduce seal friction, extend valve life. 
 4, completely sealed, leakage is zero. 
 5, the replacement of the valve plate gasket, O-ring, disc, shaft and other material, applied a variety of media and different temperatures. 

 Product standard 

 1, the products meet GB12238-89 "general purpose valve connecting flange and wafer butterfly valve" standard. 
 2, the tests were consistent with GB/T13927-92 "universal valve pressure test" standard. 
 3, the side flange meet GB/T17241.6-1998 "the whole cast iron pipe flanges", GB4216.4-4216.5-84 "cast iron pipe flanges and gaskets" standard. At the same time were in line with BS4504, 
 ISO2084, DIN2501 the PN1.0MPa, PN1.6MPa flange standards. 

 Main components material 

 Name 
 GB 
 American Standard ASTM 
 British Standard BS 

 Body 
 HT200 
 A126 ClassB 
 B1452-20 

 Valve plate 
 QT500 
 A536 65-45-12 
 BS2789-65 

 Shaft 
 2Cr13 
 420 
 Bs970 

 Turn sets 
 ZCuZn38Mn3Pb2 
 B36 
 Bs1400 

 Valve plate gasket 
 NBR 
 D2000 Aa6014 
 Bs2494 Buua-N 

 Body steel ring 
 0Cr18Ni9 
 S32100 
 BS321S12 


 Performance Specifications 

 Nominal diameter DN 
 100 ~ 11200 
 100 ~ 1200 
 mm 

 Nominal pressure PN 
 1.0 
 1.6 
 MPa 

 Test pressure 
 Seal 
 1.5 
 2.4 
 MPa 

 Case 
 1.1 
 1.76 
 MPa 

 Temperature (℃) 
 -10 ℃ ~ 120 ℃ 

 Medium 
 Water, sewage, air, etc. 







 DN 
 DN (mm) 
 Manual devices 
 Dimensions (mm) 
 Weight 
 (Kg) 

 D 
 D1 
 d 
 b 
 f 
 Short structure 
 Long structure 
 H 
 H1 
 H2 
 L 
 L1 
 L2 
 L3 
 L4 
 L5 
 h 
 m 

 n-do 
 4-M 
 n-do 
 Short structure 
 Long structure 
 Short structure 
 Long structure 

 Note: The short side of the flange valve flange structure has four threaded holes, as shown, the rest of the light holes, long side of the flange valve flange structure are light holes. 



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