Location:Home / Product / Check valve / Butterfly check valve H77X-16
Butterfly check valve has low flow resistance coefficient, reliable and compact structure, and lightweight body. By using a clamp connection, the valve disc has a short closing stroke and spring loading, which can significantly reduce water hammer phenomenon. This valve is mainly used for urban, industrial, and high-rise building water supply, drainage pipe networks, and marine applications. Due to its shorter structural length compared to general check valves, it is suitable for places with installation space limitations.
Product drawing

Product dimensions
| DN | 10P | 16P | 25P | 150LB | 300LB | ||||||
| L | D | L | D | L | D | L | D | L | D | ||
| 40 | 1 1/2" | 60 | 93 | 60 | 93 | 60 | 93 | 60 | 83 | 60 | 93 |
| 50 | 2" | 60 | 108 | 60 | 108 | 60 | 108 | 60 | 103 | 60 | 109 |
| 65 | 2 1/2" | 67 | 128 | 67 | 128 | 67 | 128 | 67 | 122 | 67 | 127 |
| 80 | 3" | 73 | 142 | 73 | 142 | 73 | 142 | 73 | 135 | 73 | 146 |
| 100 | 4" | 73 | 162 | 73 | 162 | 73 | 167 | 73 | 172 | 73 | 178 |
| 125 | 5" | 86 | 192 | 86 | 192 | 86 | 194 | 86 | 195 | 86 | 213 |
| 150 | 6" | 98 | 218 | 98 | 218 | 98 | 224 | 98 | 218 | 98 | 248 |
| 200 | 8" | 127 | 273 | 127 | 273 | 127 | 284 | 127 | 276 | 127 | 304 |
| 250 | 10" | 146 | 328 | 146 | 330 | 146 | 340 | 146 | 336 | 146 | 358 |
| 300 | 12" | 181 | 378 | 181 | 384 | 181 | 400 | 181 | 406 | 181 | 418 |
| 350 | 14" | 184 | 438 | 184 | 444 | 184 | 456 | 184 | 446 | 222 | 482 |
| 400 | 16" | 191 | 490 | 191 | 495 | 191 | 515 | 191 | 510 | 232 | 536 |
| 450 | 18" | 203 | 540 | 203 | 555 | 203 | 565 | 203 | 545 | 264 | 593 |
| 500 | 20" | 219 | 594 | 219 | 616 | 219 | 618 | 219 | 600 | 292 | 650 |
| 600 | 24" | 222 | 695 | 222 | 728 | 222 | 728 | 222 | 714 | 318 | 771 |
| 700 | 28" | 305 | 810 | 305 | 798 | 305 | 827 | 305 | 770 | 368 | 821 |
| 800 | 32" | 305 | 916 | 305 | 908 | 305 | 942 | 305 | 876 | 368 | 936 |
| 900 | 36" | 368 | 1016 | 368 | 1008 | 368 | 1036 | 368 | 980 | 483 | 1044 |
| 1000 | 40" | 432 | 1124 | 432 | 1122 | 432 | 1152 | 432 | 1090 | 546 | 1140 |
| 1200 | 48" | 524 | 1338 | 524 | 1336 | 524 | 1362 | 524 | 1300 | 629 | 1365 |
Technical Documentation
1.execution standardJB/T 8937-2010
Product Parts List
| serial number | name | material |
| 1 | valve body | ductile cast iron/carbon steel/stainless steel/aluminum bronze |
| 2 | valve disc | carbon steel/stainless steel/aluminum bronze |
| 3 | valve seat | 304/316/STL |
| 4 | spring | stainless steel/INCONEL X-750 |
Related Information
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