Product Description 
 A hard seal butterfly valve Product Overview 

 I can plant the introduction of foreign advanced technology, based on a sophisticated J-shaped flexible ring and three eccentric multi-level production of the metal seal structure of the hard seal butterfly valve is widely used in medium temperature ≤ 425 ℃ of metallurgy, electric power, petrochemicals, as well as drainage and municipal construction and other industrial pipe, for regulating the flow and set stop use of the body. The three-eccentric hard-seal butterfly valve structure, valve seat and disc sealing surface and are made of stainless steel with different hardness, good corrosion resistance, long life, this valve has a two-way sealing function, the product line with national GB/T13927- 92 valve pressure test standard. 

 Second, the characteristics 

 1, the three-eccentric hard-seal butterfly valve seal structure, seat and disc almost no wear, with the more functional view of the more tight seal. 

 2, ring made of stainless steel production, with a metal seal and the seal of the dual advantages of flexibility, both in the case of low and high temperatures, all with excellent sealing properties, resistant to corrosion, long service life. 

 3, the disc sealing surface using cobalt-based alloy welding, sealing surface wear-resistant, long service life. 

 4, large-format disc using lattice structure, high strength, over-flow area, flow resistance. 

 5, the hard-seal butterfly valve with bi-directional sealing capabilities, installation, media flow is not restricted, but also from the impact of spatial location can be installed in any direction. 

 6, the drive can be multi-position (rotated 90 ° or 180 °) to install, easy to use. 

 Main technical parameters 



 Nominal by DN (mm) 
 50 2000 

 Nominal pressure PN (MPa) 
 0.6 
 1.0 
 1.6 
 2.5 

 Seal test (MPa) 
 0.66 
 1.1 
 1.76 
 2.75 

 Strength test (MPa) 
 0.9 
 1.5 
 2.4 
 3.75 

 Temperature 
 Carbon Steel: -29 ℃ ~ 425 ℃ Stainless steel: -40 ℃ ~ 650 ℃ 

 Medium 
 Water, air, natural gas, oil and weak corrosive fluid 

 Leakage rate 
 Meet the standards GB/T13927-92 

 Drive 
 Worm gear drive, electric, pneumatic, hydraulic 




 Fourth, the main parts materials 



 Part Name 
 Material 

 Body 
 WCB, alloy steel, stainless steel, QT450-10 

 Disc 
 WCB, alloy steel, stainless steel, QT450-10 

 Valve shaft 
 2Cr13 stainless steel, alloy steel 

 Ring 
 Stainless steel ring 

 Filler 
 Flexible Graphite 



 5, using standard 



 Manufacturing standards 
 JB / T 8527-97 

 Flange Standard 
 GB9113-2000 

 Structure of the standard length 
 GB12221-89 

 Test 
 GB / T 13927-92 




 Six, ALD943H-10/16/25 / electric hard-seal butterfly valve connecting the main outline dimensions 
 (Unit: mm) 



 Nominal by (DN) 
 Main dimensions 
 Flange dimensions and bolt specifications 

 1.0MPa 
 1.6MPa 
 2.5MPa 

 L 
 H1 
 H 
 D 
 D1 
 n-Фd 
 D 
 D1 
 n-Фd 
 D 
 D1 
 n-Фd 

 50 
 108 
 530 
 112 
 165 
 125 
 4-18 
 165 
 125 
 4-18 
 165 
 125 
 4-18 

 65 
 112 
 530 
 115 
 185 
 145 
 4-18 
 185 
 145 
 4-18 
 185 
 145 
 8-18 

 80 
 114 
 565 
 120 
 200 
 160 
 4-18 
 200 
 160 
 8-18 
 200 
 160 
 8-18 

 100 
 127 
 600 
 138 
 220 
 180 
 8-18 
 220 
 180 
 8-18 
 235 
 190 
 8-22 

 125 
 140 
 640 
 164 
 250 
 210 
 8-18 
 250 
 210 
 8-18 
 270 
 220 
 8-26 

 150 
 140 
 705 
 175 
 285 
 240 
 8-22 
 285 
 240 
 8-22 
 300 
 250 
 8-26 

 200 
 152 
 775 
 200 
 340 
 295 
 8-22 
 340 
 295 
 12-22 
 360 
 310 
 12-26 

 250 
 165 
 945 
 243 
 395 
 350 
 12-22 
 405 
 355 
 12-26 
 425 
 370 
 12-30 

 300 
 178 
 1070 
 250 
 445 
 400 
 12-22 
 460 
 410 
 12-26 
 485 
 430 
 16-30 

 350 
 190 
 1140 
 280 
 505 
 460 
 16-22 
 520 
 470 
 12-26 
 555 
 490 
 16-33 

 400 
 216 
 1210 
 305 
 565 
 515 
 16-26 
 580 
 525 
 16-26 
 620 
 550 
 16-36 

 450 
 222 
 1335 
 350 
 615 
 565 
 20-26 
 640 
 585 
 16-30 
 670 
 600 
 20-36 




 Pneumatic butterfly valve butterfly valve electric butterfly hard seal butterfly valve air soft seal butterfly valve temperature valve 
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