Swing Check Valve Overview 
 Valve function is used to prevent the media back in the pipeline. Check valves are automatic valves, opening and closing pieces by the power of its own open mobile media 
 Or off. Only one-way check valve for media flow control on the road to prevent the media back, to prevent accidents. 
 Applicable medium: water, oil, steam, acid medium and so on. 



 Swing Check Valve Standard: 

 Design and manufacture 
 Structure Length 
 Pressure - Temperature Ratings 
 Flange 
 Testing and inspection 

 GB12236 
 GB12221 
 GB9131 
 JB/T74 
 HG20604 
 JB/T74-94 
 GB9113 
 HG20592-20635 
 JB/T9092-1999 
 GB13927 









 Swing check valve pressure test: 

 That pressure 
 PN (MPa) 
 Test pressure (MPa) 
 Temperature (℃) 
 Medium 

 Strength test 
 Seal test 
 WCB 
 Cr5Mo 
 1Cr18Ni12Mo2Ti 
 1Cr18Ni9Ti 

 1.6 
 2.4 
 1.8 
 ≤ 425 
 ≤ 550 
 ≤ 220 
 ≤ 200 
 Water, oil, steam, acid medium 

 2.5 
 3.8 
 2.8 

 4.0 
 6.0 
 4.4 

 6.4 
 9.6 
 7.1 

 5.0 
 15.0 
 11.0 
 - 

 16.0 
 24.0 
 17.6 

 25.0 
 37.5 
 27.5 











 Swing Check the main parts and performance materials: 

 Part Name 
 Material Number 

 Body 
 WCB 
 ZGCr5Mo 
 ZG1Cr18Ni9Ti 
 ZG1Cr18Ni12Mo2Ti 

 Valve cover 
 WCB 
 ZGCr5Mo 
 ZG1Cr18Ni9Ti 
 ZG1Cr18Ni12Mo2Ti 

 Valve 
 WCB 
 ZGCr5Mo 
 ZG1Cr18Ni9Ti 
 ZG1Cr18Ni12Mo2Ti 

 Rocker 
 WCB 
 ZGCr5Mo 
 ZG1Cr18Ni9Ti 
 ZG1Cr18Ni12Mo2Ti 

 Seat 
 25 
 1Cr18Ni9Ti 
 1Cr18Ni9Ti 
 1Cr18Ni12Mo2Ti 

 Pin 
 1Cr17Ni2 
 1Cr18Ni9Ti 
 1Cr18Ni12Mo2Ti 

 Seal ring, gasket 
 Jacketed Gasket 
 1Cr18Ni9Ti 
 1Cr18Ni12Mo2Ti 





 Swing Check Valve Main size 





 Nominal 
 PN (MPa) 
 Nominal diameter 
 DN (mm) 
 Main dimensions and connecting dimensions (mm) 
 Weight 
 (Kg) 

 L 
 D 
 D1 
 D2 
 bf 
 zd 
 D3 
 H 

 1.6 
 25 
 160 
 115 
 85 
 65 
 16-2 
 4--14 
 140 
 130 
 14 

 32 
 180 
 135 
 100 
 78 
 16-2 
 4--18 
 150 
 140 
 16 

 40 
 200 
 145 
 110 
 85 
 16-2 
 4--18 
 160 
 150 
 18 

 50 
 230 
 160 
 125 
 100 
 16-2 
 4--18 
 185 
 160 
 22 

 65 
 290 
 180 
 145 
 120 
 18-3 
 4--18 
 215 
 177 
 26 

 80 
 310 
 195 
 160 
 135 
 20-3 
 8-18 
 235 
 187 
 33 

 100 
 3540 
 215 
 180 
 155 
 20-3 
 8-18 
 255 
 202 
 39 

 125 
 400 
 245 
 210 
 185 
 22-3 
 8-18 
 285 
 227 
 57 

 150 
 480 
 280 
 240 
 210 
 24--3 
 8-23 
 330 
 263 
 80 

 200 
 550 
 335 
 295 
 265 
 26-3 
 12-23 
 385 
 293 
 95 

 250 
 650 
 405 
 355 
 320 
 30-3 
 12-25 
 455 
 330 
 175 

 300 
 750 
 460 
 410 
 375 
 30-4 
 12-25 
 515 
 382 
 260 

 350 
 850 
 520 
 470 
 435 
 34--3 
 16-25 
 545 
 430 
 360 

 400 
 950 
 580 
 525 
 485 
 36-4 
 16-30 
 600 
 480 
 496 

 500 
 1150 
 705 
 650 
 608 
 44--4 
 20-34 
 730 
 560 
 588 




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