Location:Home / Product / Check valve / Double disc swing check valve H74H-16
This valve is an ultra-thin check valve with advantages such as simple structure, beautiful appearance, light weight, and easy installation. This valve is mainly used in the supply and discharge systems of industries such as petroleum, chemical, and metallurgy where installation space is limited.
Product drawing

Product dimensions
| DN | pathD1 | 10P | 16P | 25P | 150LB | 300LB | ||||||
| L | D | L | D | L | D | L | D | L | D | |||
| 32 | 1 1/4" | 18 | 17 | 83 | 17 | 83 | 19 | 83 | 19 | 73 | 19 | 80 |
| 40 | 1 1/2" | 20 | 17 | 93 | 17 | 93 | 19 | 93 | 19 | 83 | 19 | 92 |
| 50 | 2" | 25 | 17 | 104 | 17 | 104 | 19 | 108 | 19 | 103 | 19 | 109 |
| 65 | 2 1/2" | 38 | 17 | 125 | 17 | 125 | 19 | 128 | 19 | 122 | 19 | 127 |
| 80 | 3" | 46 | 17 | 140 | 17 | 140 | 19 | 142 | 19 | 135 | 19 | 147 |
| 100 | 4" | 71.5 | 17 | 160 | 17 | 160 | 19 | 168 | 19 | 172 | 22 | 178 |
| 125 | 5" | 95 | 19 | 190 | 19 | 190 | 19 | 195 | 19 | 195 | 22 | 213 |
| 150 | 6" | 114 | 19 | 218 | 19 | 220 | 22 | 224 | 19 | 220 | 22 | 248 |
| 200 | 8" | 140 | 26 | 270 | 26 | 270 | 29 | 284 | 29 | 276 | 28 | 304 |
| 250 | 10" | 188 | 29 | 328 | 29 | 330 | 38 | 341 | 29 | 336 | 38 | 358 |
| 300 | 12" | 216 | 38 | 378 | 38 | 384 | 48 | 401 | 38 | 406 | 51 | 419 |
| 350 | 14" | 263 | 38 | 438 | 38 | 444 | 48 | 458 | 44 | 446 | 51 | 482 |
| 400 | 16" | 305 | 48 | 489 | 48 | 495 | 48 | 515 | 51 | 510 | 51 | 536 |
| 450 | 18" | 356 | 48 | 539 | 48 | 555 | 60 | 565 | 60 | 545 | 76 | 593 |
| 500 | 20" | 406 | 58 | 594 | 58 | 618 | 70 | 620 | 64 | 602 | 83 | 650 |
| 600 | 24" | 482 | 68 | 690 | 68 | 730 | 78 | 732 | 68 | 714 | 85 | 770 |
| 700 | 28" | 562 | 70 | 810 | 70 | 800 | 80 | 825 | ||||
| 800 | 32" | 664 | 75 | 915 | 75 | 910 | 95 | 940 | ||||
| 900 | 36" | 738 | 75 | 1015 | 75 | 1010 | 95 | 1030 | ||||
| 1000 | 40" | 846 | 90 | 1120 | 90 | 1120 | 100 | 1150 | ||||
Technical Documentation
1.execution standardJB/T 8937-2010
Product Parts List
| serial number | name | material |
| 1 | valve body | WCB/CF8 |
| 2 | valve disc | WCB/CF8 |
| 3 | valve seat | WCB/CF8 |
| 4 | rings | WCB/CF8 |
| 5 | O-ring | WCB/CF8 |
| 6 | Screw/gasket | WCB/CF8 |
Related Information
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