Custom Ductile Iron Wafer Butterfly Valve With Gear Box Factories, Factory
Product Description
Technical Specifications
Characteristics
Gear box operated butterfly valve, the valve is clamped between two pipeline flanges with double headed bolts.
The structure is compact, small in size, and light in weight. The transmission mechanism is a worm gear, usually installed at the top of the valve. The center of the valve stem, the center of the butterfly plate, and the center of the valve body are on the same axis, designed as a concentric structure.
Advantages
- 1 With only a small amount of force applied, the turbine can amplify the huge torque that drives the butterfly plate to rotate, making it easy to open/close butterfly valves with large diameters (such as DN300 or above) and high pressure differentials - avoiding the problem of "not being able to turn" when manually driving the valve stem, significantly reducing labor costs.
- 2 The worm gear has a reverse self-locking function to ensure the safety and stability of the system, especially suitable for unmanned pipeline systems.
- 3 The streamlined design of the butterfly plate reduces fluid resistance loss, making it an energy-saving product.
- 4 The gear box are usually made of cast iron, ductile iron, or stainless steel materials, which can withstand industrial environments such as high temperature, humidity, and slight corrosion. They are highly compatible with the application scenarios of turbine butterfly valves (such as water supply and drainage, chemical industry, and electricity) and can operate stably without additional protection.
Application Scenarios
Widely used in general industrial fields such as petroleum, gas, chemical, and water treatment, as well as in cooling water systems for thermal power plants. It can also be used in pipeline systems for industries such as metallurgy and municipal construction to cut off or control the flow of media such as air, water, steam, and oil.
Packing
Standard export wooden case packaging
Material Specifications
| Body | Plate | Rotating Shaft | Bushing | Seat | Operating Temperature (℃) |
|---|---|---|---|---|---|
| Material Name | Electroplated Nodular Cast Iron | Material Name | Material Name | Material Name | |
| Ductile Iron | Ductile Iron | Stainless Steel | PTFE | EPDM Rubber | -45～+135 Short-time -50～+150 |
| Ductile Iron | Stainless Steel | Carbon Steel | PTFE | Hypalon | -18～+135 Short-time -18～+149 |
| Aluminum Bronze | Titanium Steel | EPDM Rubber | -45～+135 Short-time -50～+150 | ||
| Stainless Steel | CF8M Stainless Steel | Neoprene Rubber | -7～+93 Short-time -7～+107 | ||
| CF8M Stainless Steel | Carbon Steel | NBR Rubber | -12～82 Short-time -12～+93 | ||
| Carbon Steel | CF8M Stainless Steel | Abrasion-Resistant Rubber | -10～+50 | ||
| Fluororubber | -23～+150 | ||||
| Heat-Resistant EPDM Rubber | -20～+150 | ||||
| PTFE | +10～+150 |
Dimensions
| DN | A | B | C | D | L | H | D1 | n- φ | K | E | n1- φ 1 | φ 2 | G | n2-M | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | inch | ||||||||||||||
| 50 | 2” | 161 | 80 | 42 | 52.9 | 32 | 84.84 | 120 | 4- φ 23 | 77 | 57.15 | 4- φ 6.7 | 12.6 | 118 | - |
| 65 | 2.5" | 175 | 89 | 44.7 | 64.5 | 32 | 96.2 | 136.2 | 4- φ 26.5 | 77 | 57.15 | 4- φ 6.7 | 12.6 | 137 | - |
| 80 | 3” | 181 | 95 | 45.2 | 78.8 | 32 | 61.23 | 160 | 8- φ 18 | 77 | 57.15 | 4- φ 6.7 | 12.6 | 143 | - |
| 100 | 4” | 200 | 114 | 52.1 | 104 | 32 | 70.80 | 185 | 4- φ 24.5 | 92 | 69.85 | 4- φ 10.3 | 15.77 | 156 | - |
| 125 | 5" | 213 | 127 | 54.4 | 123.3 | 32 | 82.28 | 215 | 4- φ 23 | 92 | 69.85 | 4- φ 10.3 | 18.92 | 190 | - |
| 150 | 6" | 226 | 139 | 55.8 | 155.6 | 32 | 91.08 | 238 | 4- φ 25 | 92 | 69.85 | 4- φ 10.3 | 18.92 | 212 | - |
| 200 | 8" | 260 | 175 | 60.6 | 202.5 | 45 | 112.89 76.35 | 295 | 4- φ 25 4- φ 23 | 115 | 88.9 | 4- φ 14.3 | 22.1 | 268 | - |
| 250 | 10" | 292 | 203 | 65.6 | 250.5 | 45 | 92.40 | 357 | 4- φ 29 | 115 | 88.9 | 4- φ 14.3 | 28.45 | 325 | - |
| 300 | 12" | 337 | 242 | 76.9 | 301.6 | 45 | 105.34 | 407 | 4- φ 29 | 140 | 107.95 | 4- φ 14.3 | 31.6 | 403 | - |
| 350 | 14" | 368 | 267 | 76.5 | 333.3 | 45 | 91.11 | 467 | 4- φ 30 | 140 | 107.95 | 4- φ 14.3 | 31.6 | 436 | - |
| 400 | 16’ | 400 | 309 | 86.5 | 389.6 | 51.2 72 | 100.47 102.42 | 515 525 | 4- φ 26 4- φ 30 | 197 | 158.75 | 4- φ 20.6 | 33.15 | 488 | - |
| 450 | 18" | 422 | 328 | 105.6 | 440.51 | 51.2 72 | 88.39 91.51 | 565 585 | 4- φ 26 4- φ 30 | 197 | 158.75 | 4- φ 20.6 | 38 | 539 | - |
| 500 | 20" | 480 | 361 | 131.8 | 491.6 | 64.2 82 | 95.99 101.68 | 620 650 | 4- φ 26 4- φ 33 | 197 | 158.75 | 4- φ 20.6 | 41.15 | 593 | - |
| 600 | 24" | 562 | 459 | 152 | 592.5 | 70.2 82 | 113.42 120.46 | 725 770 | 20- φ 30 20- φ 36 | 276 | 215.9 | 4- φ 22.2 | 50.65 | 816 | - |
| 700 | 28" | 624 | 520 | 163 | 695 | 66 82 | 109.65 840 | 840 | 24- φ 30 20- φ 36 | 300 | 254 | 8- φ 18 | 55 63.35 | 895 | 4-M33 |
| 800 | 32" | 672 | 591 | 188 | 794.7 | 66 82 | 124 950 | 950 | 24- φ 33 24- φ 39 | 300 | 254 | 8- φ 18 | 55 63.35 | 1015 | - |
| 900 | 36" | 720 | 656 | 203 | 864.7 | 118 | 117.57 | 1050 | 24- φ 33 | 300 | 254 | 8- φ 18 | 75 | 1115 | 4-M30 |
| 1000 | 40" | 800 | 721 | 216 | 965 | 142 | 129.89 | 1160 | 24- φ 36 | 300 | 254 | 8- φ 18 | 85 | 1230 | 4-M33 |
Frequently Asked Questions (FAQ)
It is a quarter-turn valve where the stem, disc, and body share a central axis (concentric). It is clamped between pipeline flanges (wafer type) and operated via a gear box mechanism for smooth manual opening and closing with minimal effort.
A gear box provides high torque amplification, allowing operators to open or close large-diameter valves (DN300+) or high-pressure differential valves effortlessly. It also offers self-locking capabilities to maintain stability in flow control.
This valve is designed and manufactured according to the EN593 standard using high-precision investment casting to guarantee reliable performance and zero-leakage sealing.
Yes, the concentric wafer butterfly valve features a bidirectional sealing design, offering zero leakage regardless of the fluid direction under normal working pressures.
It is suitable for controlling fluids like water, steam, air, oil, and gas across industries such as chemical processing, petroleum, water treatment, HVAC cooling systems, power plants, and municipal utilities.
