Manual Flanged V-Port Ball Valve is a high-performance valve integrating shut-off and regulating functions. It features a V-port ball design and flanged end connections, operated manually by handle or handwheel.
Unlike conventional full-bore ball valves, the specially designed V-shaped opening provides a gradually increased flow area during rotation, achieving stable flow regulation. The unique V-port structure delivers superior shearing performance, effectively handling media containing solid particles, fibers and viscous fluids.
Working Principle of Manual Flanged V-Port Ball Valve
The valve stem is driven by a handle or handwheel to rotate the V-port ball around the stem axis, which changes the flow area between the V-shaped opening and the valve seat.
Regulating Process: The rotation angle of the ball adjusts the flow area of the V-port. It delivers sensitive fine flow regulation at small openings and smooth flow passage at large openings, achieving precise linear throttling and stable flow control throughout the full stroke.
Shut-off Process: When fully closed, the V-port fits tightly against the valve seat to achieve tight zero-leakage shutoff. The sharp V-edge generates a superior shearing effect during operation to cut off fibers and particulate impurities effectively, preventing blockage and medium deposition and ensuring smooth valve cycling.
Manual ball valves are widely used on piping systems for fast opening and closing, to cut off or connect fluid media stably. Accurate parameter confirmation including working temperature, medium, pressure and caliber is required before ordering for correct valve selection. Customized solutions on valve size, pressure rating, connection standard and body material are available to meet diverse non-standard working conditions.(Unit: mm)

| DN | inch | Type/Class | Part No | L | B | b1 | f | C | T | Y | L | φd | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 25 | 1 | VQ47-150LB | VQ47150XLX1 | 102 | 108 | 15 | 2 | 38 | 81 | 73 | 75 | 16 | |
| 32 | 1.25 | VQ47-150LB | VQ47150XLX1.25 | 102 | 115 | 14.5 | 2 | 45 | 86 | 78 | 75 | 16 | |
| 40 | 1.5 | VQ47-150LB | VQ47150XLX1.5 | 114 | 127 | 14.5 | 2 | 50 | 90 | 80 | 75 | 16 | |
| 50 | 2 | VQ47-150LB | VQ47150XLX2 | 124 | 152 | 16.3 | 2 | 62 | 93 | 90 | 75 | 16 | |
| 65 | 2.5 | VQ47-150LB | VQ47150XLX2.5 | 145 | 180 | 18 | 2 | 73 | 108 | 105 | 75 | 16 | |
| 80 | 3 | VQ47-150LB | VQ47150XLX3 | 165 | 191 | 19.5 | 2 | 90 | 123 | 118 | 75 | 20 | |
| 100 | 4 | VQ47-150LB | VQ47150XLX4 | 194 | 230 | 24 | 2 | 115 | 138 | 130 | 75 | 20 | |
| 125 | 5 | VQ47-150LB | VQ47150XLX5 | 194 | 255 | 243 | 2 | 134 | 148 | 145 | 80 | 25 | |
| 150 | 6 | VQ47-150LB | VQ47150XLX6 | 229 | 280 | 26 | 2 | 164 | 170 | 170 | 94 | 30 | |
| 200 | 8 | VQ47-150LB | VQ47150XLX8 | 243 | 340 | 29 | 2 | 206 | 200 | 201 | 94 | 30 | |
| 250 | 10 | VQ47-150LB | VQ47150XLX10 | 297 | 405 | 30.6 | 2 | 260 | 240 | 237 | 98 | 40 | |
| 300 | 12 | VQ47-150LB | VQ47150XLX12 | 338 | 485 | 32.2 | 2 | 316 | 286 | 282 | 98 | 40 | |
| 350 | 14 | VQ47-150LB | VQ47150XLX14 | 400 | 535 | 35.4 | 2 | 372 | 330 | 337 | 125 | 50 | |
| 400 | 16 | VQ47-150LB | VQ47150XLX16 | 400 | 595 | 37 | 2 | 420 | 367 | 372 | 172 | 60 | |
| 450 | 18 | VQ47-150LB | VQ47150XLX18 | 520 | 635 | 40.1 | 2 | 470 | 422 | 432 | 170 | 70 | |
| 500 | 20 | VQ47-150LB | VQ47150XLX20 | 600 | 700 | 44 | 2 | 516 | 490 | 498 | 180 | 80 | |
| 25 | 1 | VQ47-300LB | VQ47300XLX1 | 102 | 125 | 18 | 2 | 40 | 88 | 86 | 75 | 20 | |
| 32 | 1.25 | VQ47-300LB | VQ47300XLX1.25 | 102 | 135 | 19.5 | 2 | 48 | 90 | 90 | 75 | 20 | |
| 40 | 1.5 | VQ47-300LB | VQ47300XLX1.5 | 114 | 155 | 21 | 2 | 56 | 95 | 93 | 80 | 25 | |
| 50 | 2 | VQ47-300LB | VQ47300XLX2 | 124 | 165 | 23 | 2 | 65 | 98 | 98 | 80 | 25 | |
| 65 | 2.5 | VQ47-300LB | VQ47300XLX2.5 | 145 | 190 | 26 | 2 | 81 | 130 | 125 | 95 | 30 | |
| 80 | 3 | VQ47-300LB | VQ47300XLX3 | 165 | 210 | 29 | 2 | 95 | 128 | 128 | 95 | 30 | |
| 100 | 4 | VQ47-300LB | VQ47300XLX4 | 194 | 255 | 32.2 | 2 | 115 | 142 | 142 | 95 | 30 | |
| 125 | 5 | VQ47-300LB | VQ47300XLX5 | 194 | 280 | 35.6 | 2 | 138 | 175 | 170 | 100 | 40 | |
| 150 | 6 | VQ47-300LB | VQ47300XLX6 | 229 | 320 | 37 | 2 | 170 | 215 | 215 | 125 | 50 | |
| 200 | 8 | VQ47-300LB | VQ47300XLX8 | 243 | 380 | 42 | 2 | 208 | 228 | 228 | 125 | 50 | |
| 250 | 10 | VQ47-300LB | VQ47300XLX10 | 297 | 445 | 48.1 | 2 | 265 | 260 | 260 | 150 | 60 | |
| 300 | 12 | VQ47-300LB | VQ47300XLX12 | 338 | 520 | 49.3 | 2 | 320 | 310 | 310 | 150 | 60 | |
| 25 | 1 | VQ47-600LB | VQ47600XLX1 | 145 | 125 | 24.5 | 7 | 42 | 100 | 105 | 80 | 25 | |
| 32 | 1.25 | VQ47-600LB | VQ47600XLX1.25 | 145 | 135 | 27.7 | 7 | 50 | 105 | 110 | 80 | 25 | |
| 40 | 1.5 | VQ47-600LB | VQ47600XLX1.5 | 170 | 155 | 29.3 | 7 | 58 | 120 | 120 | 95 | 30 | |
| 50 | 2 | VQ47-600LB | VQ47600XLX2 | 170 | 165 | 32.4 | 7 | 68 | 130 | 135 | 95 | 30 | |
| 65 | 2.5 | VQ47-600LB | VQ47600XLX2.5 | 200 | 190 | 35.6 | 7 | 82 | 140 | 140 | 100 | 40 | |
| 80 | 3 | VQ47-600LB | VQ47600XLX3 | 200 | 210 | 38.8 | 7 | 95 | 153 | 150 | 100 | 40 | |
| 100 | 4 | VQ47-600LB | VQ47600XLX4 | 254 | 275 | 45.1 | 7 | 120 | 160 | 170 | 100 | 40 | |
| 125 | 5 | VQ47-600LB | VQ47600XLX5 | 265 | 330 | 51.5 | 7 | 138 | 190 | 200 | 125 | 50 | |
| 150 | 6 | VQ47-600LB | VQ47600XLX6 | 280 | 355 | 54.7 | 7 | 170 | 230 | 236 | 150 | 60 | |
| 200 | 8 | VQ47-600LB | VQ47600XLX8 | 360 | 420 | 626 | 7 | 218 | 263 | 273 | 170 | 70 | |
| 250 | 10 | VQ47-600LB | VQ47600XLX10 | 390 | 510 | 70.5 | 7 | 275 | 320 | 320 | 170 | 70 | |
| 300 | 12 | VQ47-600LB | VQ47600XLX12 | 420 | 560 | 73.7 | 7 | 320 | 375 | 410 | 180 | 80 |
This valve features excellent regulating performance, stable‑flow characteristics, reliable shut‑off capability, good wear resistance, easy operation and a wide range of compatible media. It is widely used in industrial sectors including petroleum, chemical, power, metallurgy, paper‑making, mining and water‑treatment.