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Face to Face Duel Plate Check Valve

Double-flanged as per API Std. 594 Class 125-2500 Type A      

 

             

NPS
CLASS
150
300
600
900
1500
2500
2 60 60 60 70 70 70
2.1/2 67 67 67 83 83 83
3 73 73 73 83 83 86
4 73 73 79 102 102 105
6 98 98 136 159 159 159
8 127 127 165 206 206 206
10 146 146 213 241 248 254
12 181 181 229 292 305 305
14 184 222 273 356 356  
16 191 232 305 384 384  
18 203 264 362 451 468  
20 219 292 368 451 533  
24 222 318 438 495 559  
30 305 368 505      
36 368 483 635      
42 432 568 701      
48 524 629        
NPS 150 300 600 900 1500 2500
CLASS
General Notes:
Dimensions are in millimeters unless otherwise indicated.
The face-to-face tolerance shall be as specified in ASME B16.10 for sizes
through NPS 24 and shall be 3 mm for sizes larger than NPS 24.
Flange faces with ring-joint grooves shall conform to the dimensions
shown in either ASME b16.5 or ASME B16.47, as applicable.
Notes:
Double-flanged valves shall only be supplied where nut space between flanges is adequate.

Unless otherwise specified in the purchase order, the bolt holes will be through-drilled.

 

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