D73H manual hard seal butterfly valve for food, pharmaceutical, petrochemical, industrial and high-rise buildings and pipes for regulating fluid flow and cut the best device. 

 Manual Wafer Butterfly Valve structural features 

 The butterfly and the absorption, digestion of foreign technology, combined with user comments and product in the domestic experience and well-developed next-generation products. 

 1, three-dimensional eccentric structure, the valve seal with flexible metal ring, so that valve disc sealing surface with uniform and reliable contact can be achieved without sealing air leaks; 

 2, the unique structure, flexible operation, labor-saving, convenient, long life; 

 3, high temperature, corrosion, wear-resistant three-dimensional eccentric. 

 Manual Wafer Butterfly Valve Main technical parameters 



 DN 
 DNmm 
 50-1200 




 Nominal 
 PNMPa 
 1.0 
 1.6 
 2.5 
 4.0 



 Test pressure 
 PSMPa 
 Strength test 
 1.5 
 2.4 
 3.75 
 6.0 

 Seal test 
 1.1 
 1.76 
 2.75 
 4.4 

 Medium 


 Water, steam, oil, acids and other corrosive 

 Temperature 


 -40 ℃ -600 ℃ 


 Manual Wafer Butterfly Valve main parts materials 



 Name 
 Material 

 Body 
 Steel, stainless steel, chrome molybdenum steel 



 Disc 
 Steel, of alloy steel (chrome plated) stainless steel, chrome molybdenum steel 

 Stem 
 2Cr13, 1Cr13 stainless steel, chrome molybdenum steel 

 Ring 


 Stainless steel, poly lactone, anti-wear materials, fluorine plastic 

 Filler 


 Flexible Graphite 










 Manual Wafer Butterfly Valve connection size 1, P, R 



 Diameter DN 
 L 
 D1 
 D2 
 Z-φd 
 H 
 HO 
 D 
 L2 
 Wt / Kgs 

 50 
 43 
 125 
 99 
 4-18 
 105 
 350 
 90 ° 
 280 
 9 

 65 
 46 
 145 
 118 
 4-18 
 115 
 370 
 90 ° 
 280 
 11 

 80 
 49 
 160 
 132 
 8-18 
 125 
 380 
 45 ° 
 280 
 15 

 100 
 56 
 180 
 155 
 8-18 
 140 
 420 
 45 ° 
 280 
 18 

 125 
 64 
 210 
 185 
 8-18 
 170 
 470 
 45 ° 
 330 
 22 

 150 
 70 
 240 
 210 
 8-23 
 180 
 500 
 45 ° 
 330 
 25 


 Manual Wafer Butterfly Valve connection size 1, P, R 



 Diameter DN 
 L 
 D1 
 D2 
 Z-φd 
 H 
 HO 
 D 
 L2 
 Wt / Kgs 

 50 
 43 
 125 
 99 
 4-18 
 105 
 350 
 90 ° 
 280 
 10 

 65 
 46 
 145 
 118 
 4-18 
 115 
 370 
 90 ° 
 280 
 12 

 80 
 49 
 160 
 132 
 8-18 
 125 
 380 
 45 ° 
 280 
 16 

 100 
 56 
 180 
 155 
 8-18 
 140 
 420 
 45 ° 
 280 
 20 

 125 
 64 
 210 
 185 
 8-18 
 170 
 470 
 45 ° 
 330 
 24 

 150 
 70 
 240 
 210 
 8-23 
 180 
 500 
 45 ° 
 330 
 27 






 Source: Yongjia County Star Valve Co., Ltd. 



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