Click to zoomU Section Butterfly Valve
For the U-Type Butterfly Valve,The flange holes will be drilled according to international flange standards, and the valve will be equipped with a non-corrosive bushing and a self-adjusting stem seal. Flange locating holes will be provided on the U-section body to ensure quick and accurate alignment during installation
Description
The valve body shall adopt a one-piece U-section design and a concentric disc and seat configuration to accommodate 2" - 56" of piping insulation, have flange holes drilled in accordance with international flange standards, and be equipped with a non-corrosive bushing and self-adjusting stem seal. Flange locating holes shall be provided on U-section bodies to facilitate quick and precise alignment during valve installation. The edge and hub of the valve disc on metal discs shall be spherically machined and hand polished for minimum torque and maximum sealing capability. The disc-to-stem connection shall be an internal square design without any possible leak paths in the disc-to-stem connection. External disc-to-stem connections such as screws or pins are prohibited. The valve seat shall have a tongue-and-groove design. The seat shall completely encapsulate the body, isolating the body from the line media, and no flange gaskets shall be necessary. The U-section valve shall be rated for bubble-tight shut-off in bidirectional service at 16 Bar for sizes 2" - 12" (50mm - 300mm) and at 10 Bar for sizes 14" - 56" (350mm - 1400mm). The valve shall be tested for tight shut-off at 110% of the rated pressure.
Product Features
- Compact and lightweight design facilitates easy installation and maintenance.
- Can be mounted in any required location; features a simple, compact construction with quick 90-degree on-off operation.
- Operating torque is minimized for enhanced energy efficiency.
- Provides bubble-tight sealing with no leakage during pressure testing.
- A wide range of materials available, suitable for various media applications.
- Long service life, proven to withstand tens of thousands of opening and closing cycles without failure.
- Flow curve approaches a straight line, demonstrating excellent regulation performance.
Working/Testing Pressure
| Size | DN | 40mm-300mm | 350mm-1200mm |
| Inch | 1-1/2"-12" | 14"-24" | |
| Working | 16bar | 10bar | |
| Testing | Shell | 24bar | 15bar |
| Seal | 17.6bar | 11bar | |
Working Temperature
| Seat Material | EPDM | NBR | FKM | PTFE |
|---|---|---|---|---|
| Temperature | -10°C to 120°C | -10°C to 80°C | -15°C to 200°C | -25°C to 180°C |
Material Specification
| Part | Material |
|---|---|
| Body | Cast Iron Ductile Iron WCB CF8 CF8M CF3M Duplex Steel Al-Bronze |
| Disc | Ductile Iron CF8 CF8M CF3M Duplex Steel Al-Bronze Harlar Coated |
| Shaft | SS410 SS416 SS420 SS431 SS316 17-4PH |
| Seat | EPDM NBR PTFE FKM Silicone |
| Bushing | FRP PTFE Bronze |
| Lever | Malleable Iron Carbon Steel Aluminum SS316 |
| Gear Box | Ductile Iron Aluminum SS316 |
Corrosion Protection
Epoxy Resin Powder Spray, minimum thickness not less than 300 microns
Disc Options
- Through shaft with Pin
- Pinless disc
- Slim disc concentric design (DN50–DN350)
Seat Options
- Cartridge rubber seat
- Tongue and Groove / Replaceable Seat
Main Dimensions (mm)
| SIZE | A | B | C | D | φ2 | ISO5211 | K | E | n-φ | D1 | n-φ1 | &° | HxH |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 50 | 161 | 80 | 43 | 52.6 | 12.6 | F07 | 90 | 70 | 4-10 | 125 | 4-19 | 90 | 11X11 |
| 65 | 175 | 89 | 46 | 64.3 | 12.6 | F07 | 90 | 70 | 4-10 | 145 | 4-19 | 90 | 11X11 |
| 80 | 181 | 95 | 46 | 78.8 | 12.6 | F07 | 90 | 70 | 4-10 | 160 | 8-19 | 45 | 11X11 |
| 100 | 200 | 114 | 52 | 104 | 15.77 | F07 | 90 | 70 | 4-10 | 180 | 8-19 | 45 | 11X11 |
| 125 | 213 | 127 | 56 | 123.3 | 18.92 | F07 | 90 | 70 | 4-10 | 210 | 8-19 | 45 | 14X14 |
| 150 | 226 | 139 | 56 | 155.7 | 18.92 | F07 | 90 | 70 | 4-10 | 240 | 8-23 | 45 | 14X14 |
| 200 | 260 | 175 | 60 | 202.4 | 22.1 | F10 | 125 | 102 | 4-12 | 295 | 8-23 | 45 | 17X17 |
| 250 | 292 | 203 | 68 | 250.42 | 28.45 | F10 | 125 | 102 | 4-12 | 350 | 12-23 | 30 | 22X22 |
| 300 | 337 | 242 | 78 | 301.5 | 31.6 | F10 | 125 | 102 | 4-12 | 400 | 12-23 | 30 | 22X22 |
| 350 | 368 | 267 | 78 | 333.5 | 31.6 | F10 | 125 | 102 | 4-12 | 460 | 16-23 | 22.5 | 22X22 |
| SIZE | A | B | φD | C | D1 | n-φ1 | 4-M | & | ISO5211 | D3 | D4 | n-φ | H | W |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 400 | 400 | 309 | 389.6 | 102 | 515 | 12-28 | 4-M24 | 22.5 | F14 | 175 | 140 | 4-18 | 27 | 36 |
| 450 | 422 | 328 | 440.5 | 114 | 565 | 16-28 | 4-M24 | 18 | F14 | 175 | 140 | 4-18 | 27 | 36 |
| 500 | 480 | 361 | 491.6 | 127 | 620 | 16-28 | 4-M24 | 18 | F14 | 175 | 140 | 4-18 | 36 | 36 |
| 600 | 562 | 459 | 592.5 | 154 | 725 | 16-31 | 4-M27 | 18 | F16 | 210 | 165 | 4-22 | 36 | 46 |
Note:
- *The shaft end can be double D and key connection. From DN700 and above, the shaft end is double key type.
- *The flange connection of the above table can be DIN2501 PN16, ASME B16.47-A 125/150LB, BS4504 PN10/PN16, JIS 10K, Table D, Table E
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