Product Description 
 I. Product Overview 

 Our company has developed a soft seal midline wafer type butterfly valve, double eccentric flange type butterfly compact, 90 ° rotary switch is easy, reliable sealing, long life, are widely used in waterworks, power plants, steel mills, building paper, chemical, food and other systems for drainage, as a regulator and cut-off use. 

 Second, the characteristics 

 1, the valve double eccentric structure, with more closed more tight sealing function, reliable sealing performance. 

 2, sealing materials made of stainless steel and butyronitrile rubber with matching, long service life. 

 3, the rubber seals can be located on the valve body can also be located in the butterfly board applicable to the different characteristics of the medium for users to choose. 

 4, the disc using a frame structure, high strength, large flow area, flow resistance is small. 

 5, the overall paint, can effectively prevent corrosion and replace as long as the seal seat material can be used in different media. 

 6, the valve is bi-directional sealing function, control of the installation from the media flows are not subject to the impact of spatial location and can be installed in any direction. 

 7, the valve structure is unique, flexible, labor-saving and convenient. 

 Third, the main technical parameters 

 Nominal pass through the DN (mm) 
 50 ~ 2000 
 50 ~ 1600 

 Nominal pressure PN (MPa) 
 0.6 
 1.0 
 1.6 

 Sealing test (MPa) 
 0.66 
 1.1 
 1.76 

 Strength test (MPa) 
 0.9 
 1.5 
 2.4 

 Suitable temperature 
 Nitrile rubber: -40 ° C to 90 ° C Viton: -20 ℃ ~ 200 ℃ 

 Suitable medium 
 Water, air, natural gas, oil and weak corrosive fluid 

 Leakage rate 
 Accordance with GB/T13927-92 standard 

 Driven approach 
 Worm gear, electric, pneumatic, hydraulic 




 Fourth, the main components of materials 

 Part Name 
 Material 

 Body 
 WCB, QT450-10, HT200, HT250 

 Disc 
 WCB, QT450-10, HT200, HT250 

 The valve shaft 
 2Cr13 

 Ring 
 Butyronitrile rubber 

 Filler 
 Flexible Graphite 




 Fifth, the implementation of standards 

 Manufacturing standards 
 GB / T-122387-89 

 Flange Standard 
 GB9113-2000, GB17241.6-1998 

 Structural length standard 
 GB12221-89 

 Test 
 GB / T 13927-92 



 , ALD942X-6/10/16 electric soft sealing butterfly valve main external connection size 
 Unit: mm 

 DN 
 The main external connection size 
 Flange dimensions and bolt hole size 

 L 
 H 
 H1 
 A 
 B 
 0.6MPa 
 1.0MPa 
 1.6MPa 

 D 
 D1 
 D2 
 nd 
 D 
 D1 
 D2 
 nd 
 D 
 D1 
 D2 
 nd 

 50 
 108 
 82.5 
 443 
 125 
 125 
 140 
 110 
 88 
 4-14 
 185 
 125 
 99 
 4-18 
 165 
 125 
 99 
 4-18 

 65 
 112 
 92.5 
 463 
 125 
 125 
 160 
 130 
 108 
 4-14 
 185 
 145 
 118 
 4-18 
 185 
 145 
 118 
 4-18 

 80 
 114 
 100 
 483 
 125 
 125 
 190 
 150 
 124 
 4-18 
 200 
 160 
 132 
 8-18 
 200 
 160 
 132 
 8-18 

 100 
 127 
 110 
 498 
 125 
 125 
 210 
 170 
 144 
 4-18 
 220 
 180 
 156 
 8-18 
 220 
 180 
 156 
 8-18 

 125 
 140 
 125 
 682 
 325 
 245 
 240 
 20 
 174 
 8-18 
 250 
 210 
 184 
 8-18 
 250 
 210 
 184 
 8-18 

 150 
 140 
 142.5 
 736 
 325 
 245 
 265 
 225 
 199 
 8-18 
 285 
 240 
 211 
 8-22 
 285 
 240 
 211 
 8-22 

 200 
 152 
 170 
 800 
 325 
 245 
 320 
 280 
 254 
 8-18 
 340 
 295 
 266 
 8-22 
 340 
 295 
 266 
 12-22 

 250 
 165 
 192.5 
 895 
 363 
 313 
 375 
 335 
 309 
 12-18 
 395 
 350 
 319 
 12-22 
 405 
 355 
 319 
 12-26 

 300 
 178 
 222.5 
 956 
 363 
 313 
 440 
 395 
 363 
 12-22 
 445 
 400 
 370 
 12-22 
 460 
 410 
 370 
 12-26 

 350 
 190 
 252.5 
 1029 
 363 
 313 
 490 
 445 
 413 
 12-22 
 505 
 460 
 429 
 16-22 
 520 
 470 
 429 
 16-26 

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