MSS SP-71 Class 125 Cast Iron Air Cushion Swing Check Valve
1.size:DN50-DN600;2’’-24’’
2.Medium:water
3.Standard:EN12334/BS5153/MSS SP-71/AWWA C508
4.Pressure:CLASS 125-300/PN10-25/200-300PSI
5.Material:CI,DI
6.Type:wafer,swing
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Description
TECHNICAL REQUIREMENT :
● Design and Manufacture Conform to MSS SP-71
● Flange dimensions Conform to ASME B16.1
● Face to Face dimensions Conform to ASME B16.10
● Testing Conform to MSS SP-71
Specification
| No. | Part Name | Material |
 |
|
| 1 | BODY | ASTM A126-B | ||
| 2 | SEAT RING | ASTM B62 C83600 | ||
| 3 | DISC | ASTM A126-B | ||
| 4 | CYLINDER APPARATUS | ASSEMBLY | ||
| 5 | DISC RING | ASTM B62 C83600 | ||
| 6 | HINGE | ASTM A536 65-45-12 | ||
| 7 | STEM | ASTM A276 410 | ||
| 8 | BONNET | ASTM A126-B | ||
| 9 | LEVER | CARBON STEEL | ||
| 10 | WEIGHT | CAST IRON | ||
Dimensions data(mm)
| NPS | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 24 |
| Dn | 203 | 254 | 305 | 356 | 406 | 457 | 508 | 610 |
| L | 495.3 | 622.3 | 698.5 | 787.4 | 914.4 | 965 | 1016 | 1219 |
| D | 343 | 406 | 483 | 533 | 597 | 635 | 699 | 813 |
| D1 | 298.5 | 362 | 431.8 | 476.3 | 539.8 | 577.9 | 635 | 749.3 |
| b | 28.5 | 30.2 | 31.8 | 35 | 36.6 | 39.6 | 42.9 | 47.8 |
| n-d | 8-22 | 12-25 | 12-25 | 12-29 | 16-29 | 16-32 | 20-32 | 20-35 |
| H | 332 | 383 | 425 | 450 | 512 | 702 | 755 | 856 |