
Marine Center Worm Manual Butterfly valve is operated by worm gear, used to adjust the flow rate, open and close the pipe system in the marine pipe system. The connection type also can be Lug type or Flange type.
GB Marine Butterfly Valve
Marine Center Worm Manual Butterfly valve is operated by worm gear, used to adjust the flow rate, open and close the pipe system in the marine pipe system. The connection type also can be Lug type or Flange type. T...

Marine Center Worm Manual Butterfly valve is operated by worm gear, used to adjust the flow rate, open and close the pipe system in the marine pipe system. The connection type also can be Lug type or Flange type.
| Nominal Pressure | Norminal Diameter | Structure& Flange Dimension | Hole of Nut | ||||||||||||||||||||
| ISO、JIS、GB | ISO(GB2501-89) | JIS | GB(GB569-65) | ISO | JIS | GB | |||||||||||||||||
| Mpa | mm | H | H1 | L1 | D0 | L | D | D1 | D2 | L | D | D1 | D2 | L | D | D1 | D2 | n | Th. | n | Th. | n | Th. |
| 1 | 50 | 280 | 90 | 160 | 140 | 43 | 165 | 125 | 102 | 40 | 155 | 120 | 88 | 43 | 135 | 103 | 84 | 4 | 18 | 4 | 19 | 6 | 16 |
| 65 | 295 | 100 | 160 | 140 | 46 | 185 | 145 | 122 | 40 | 175 | 140 | 112 | 46 | 155 | 123 | 104 | 4 | 18 | 4 | 19 | 6 | 16 | |
| 80 | 340 | 130 | 160 | 140 | 46 | 200 | 160 | 133 | 60 | 185 | 150 | 125 | 46 | 170 | 138 | 118 | 8 | 18 | 8 | 19 | 8 | 16 | |
| 100 | 360 | 135 | 160 | 140 | 52 | 220 | 180 | 158 | 60 | 210 | 175 | 144 | 52 | 190 | 158 | 138 | 8 | M16 | 8 | M16 | 8 | M14 | |
| 125 | 395 | 155 | 160 | 140 | 56 | 250 | 210 | 184 | 60 | 250 | 210 | 178 | 56 | 215 | 183 | 164 | 8 | M16 | 8 | M20 | 10 | M14 | |
| 150 | 430 | 170 | 190 | 220 | 56 | 285 | 240 | 212 | 70 | 280 | 240 | 207 | 56 | 240 | 208 | 190 | 8 | M20 | 8 | M20 | 12 | M14 | |
| 200 | 480 | 190 | 190 | 220 | 60 | 340 | 295 | 268 | 80 | 330 | 290 | 260 | 60 | 310 | 273 | 250 | 8 | M20 | 12 | M20 | 12 | M16 | |
| 250 | 550 | 225 | 225 | 300 | 68 | 395 | 350 | 320 | 90 | 400 | 355 | 316 | 68 | 380 | 336 | 310 | 12 | M20 | 12 | M22 | 14 | M20 | |
| 300 | 630 | 260 | 225 | 300 | 78 | 445 | 400 | 370 | 90 | 445 | 400 | 361 | 78 | 435 | 391 | 364 | 12 | M20 | 16 | M22 | 16 | M20 | |
| 350 | 680 | 270 | 225 | 380 | 78 | 505 | 460 | 430 | 100 | 490 | 445 | 404 | 78 | 485 | 441 | 414 | 16 | M20 | 16 | M22 | 18 | M20 | |
| 400 | 795 | 315 | 265 | 380 | 102 | 565 | 515 | 482 | 110 | 560 | 510 | 462 | 102 | 545 | 496 | 466 | 16 | M24 | 16 | M24 | 18 | M24 | |
| 450 | 860 | 340 | 265 | 380 | 114 | 615 | 565 | 532 | 130 | 620 | 565 | 530 | 114 | 600 | 551 | 520 | 20 | M24 | 20 | M24 | 20 | M24 | |
| 500 | 980 | 375 | 265 | 380 | 126 | 670 | 620 | 585 | 140 | 675 | 620 | 585 | 126 | 650 | 601 | 572 | 20 | M27 | 20 | M24 | 20 | M24 | |