The gate plate and valve seat undergo special processing with hard alloy and PTFE spray welding to achieve dual sealing. Grease injection provides auxiliary sealing for dual protection, ensuring more reliable sealing and extended service life. This valve features a unique triple-adjustable packing structure, ensuring reliable sealing with the bonnet and stem. Flat plate gate valves with pilot holes are used in pipelines that need to be balled and cleared, and flat plate gate valves without pilot holes are used in pipelines that do not need to be balled and cleared. When the pressure inside the valve body cavity increases, the valve seat automatically retracts to relieve excessive pressure. The transmission mechanism ensures smooth valve operation, with an opening and closing torque that is only one-third to one-half that of conventional valves. The flat gate valve opens and closes rapidly with a cushioning mechanism, ensuring smooth operation without impact. Its innovative pneumatic-to-manual conversion structure offers flexible, convenient, and reliable operation. Regulating flat gate valves are suitable for pump station outlets and other pipelines requiring medium regulation, serving to regulate and shut off the medium flow.

40 | 165 | 150 | 110 | 84 | 18-2 | 4-18 |
50 | 178 | 165 | 125 | 99 | 20-2 | 4-18 |
65 | 190 | 185 | 145 | 118 | 20-2 | 4-18 |
80 | 203 | 200 | 160 | 132 | 20-2 | 8-18 |
100 | 229 | 220 | 180 | 156 | 22-2 | 8-18 |
125 | 254 | 250 | 210 | 184 | 22-2 | 8-18 |
150 | 267 | 285 | 240 | 211 | 24-2 | 8-22 |
200 | 292 | 340 | 295 | 266 | 24-2 | 12-22 |
250 | 330 | 405 | 355 | 319 | 26-2 | 12-26 |
300 | 356 | 460 | 410 | 370 | 28-2 | 12-26 |
350 | 381 | 520 | 470 | 429 | 30-2 | 16-26 |
400 | 406 | 580 | 525 | 480 | 32-2 | 16-30 |
450 | 432 | 640 | 585 | 548 | 40-2 | 20-30 |
500 | 457 | 715 | 650 | 609 | 44-2 | 20-33 |
600 | 508 | 840 | 770 | 720 | 54-2 | 20-36 |





























