Vertical Check Valve 

 ◆ Main Performance Specifications 

 Test pressure (MPa) 2.5 4.0 6.4 10.0 MPa 
 Shell strength test 3.75 6.0 9.6 15.0 MPa 
 High pressure seal test pressure 2.75 4.4 7.04 11.0 MPa 
 0.5-0.7 low pressure gas seal test 
 Medium C for water, oil, gas, nitric acid R P N acetic acid gas 
 Applicable temperature ≤ 425 ℃ ≤ 100 ℃ -40 - +80 ℃ 



 Structure length: GB12221-89 
 Flange standard: JB79-59 

 ◆ The main dimensions and connection dimensions unit: mm 

 PN DN HD D1 D2 bf Z-φd 
 1.6MPa 
 2.5MPa 
 4.0MPa 32 110 135 100 78 18 2 4-18 
 40 120 145 11O 85 18 3 4-18 
 50 140,160,125,100,203 4-18 
 65 160,180,145,125,223 8-18 
 80 185,195,160,135,223 8-18 
 100 210,230,190,160,243 8-23 
 125 275,270,220,188,283 8-25 
 150 300,300,250,218,303 8-25 
 200 380,360,310,278,343 12-25 
 4.0MPa 200 380 375 320 282 38 3 12-30