Swing check valves. 

 Features 

 Check valve is to automatically prevent fluid back flow valve. Check valves in the fluid under pressure valve opens, fluid flows from the entrance to the exit. When the inlet pressure below the pressure at the outlet of the valve flap in the fluid pressure under the action of such factors as gravity itself automatically close to prevent fluid backflow. 

 Use 

 Widely used in power plants, chemical, water, etc. 

 Standards 

 Design and manufacturing test and inspection flange 
 GB12236 JB/T79.1-94 GB911*-2000 JB/T9092 


 Body material 

 Steel, stainless steel, titanium, Hastelloy, Monel, pure nickel 

 The corresponding model H44H-25, H44H-16, H44H-40, H44H-64, H44H-100, H44H-160, H44W-25, H44W-16, H44W-40, H44W-64, H44W-100, H44W- 160, H44H-150Lb, H44H-300Lb, H44H-600Lb, H44H-800Lb, H44W-150Lb, H44W-300Lb, H44W-600Lb, H44W-800Lb, H44Y-150Lb, H44Y-300Lb, H44Y-600Lb, H44Y-800Lb, H44Y-25I, H44Y-16I, H44Y-40I, H44Y-64I, H44Y-100I, H44Y-160I 

 The main dimensions 





 H44H-16 

 Nominal Dimension Nominal diameter valve weight 
 (Mm) (MPa) (mm) 
 DN PN LD D1 D2 bf zd H 
 50 1.6 230,160,125,100,163 4-18 160 22 
 65 290,180,145,120,183 4-18 177 26 
 80 310,195,160,135,203 8-18 187 33 
 100,350,215,180,155 2038-1820239 
 125,400,245,210,185 2238-1822757 
 150,480,280,240,210 2438-2326380 
 200,600,335,295,265 26312-2329395 
 250,650,405,355,320 30312-25330175