Description
The butterfly valve is designed to be used as a shut-off or control valve to control flows in heat supply systems, water supply, in technological processes in the food, chemical, oil and gas, pulp and paper and other industries.
Operating principle: The valves open and close by turning the disk by 90°. Opening is done by turning the handle counterclockwise, closing - clockwise.
The DNOVA HGBF reducer allows you to manually set the required positioning of the shut-off element by a quarter of a turn, acting as an alternative to pneumatic, electric or hydraulic quarter-turn actuators. Suitable for ball valves, butterfly valves, valves with a rotation angle of 90°, as well as for controlling air dampers.
Technical characteristics of butterfly valves DNOVA WBV3131N-2W-Fb DN50-300 PN16, stainless steel 304, NBR:
| Characteristic | Meaning |
| Shutter type | rotary disc |
| Diameter | 50-300 mm |
| Nominal pressure | 16 bar |
| Working environment temperature | from -10 to +90°C |
| Application | water supply, heat supply, chemical industry, oil and gas industry, food industry, pulp and paper industry |
| Connection type | interflange |
| Control type | Manual (handle, gearbox) |
| Sealing class | A |
| Service life | 10 years |
| Guarantee | 12 months |
Technical characteristics of DNOVA HGBF RQN gearboxes:
| Characteristic | Meaning |
| Working environment temperature | from -30 to +120 °C |
| Application | water supply, heat supply, chemical industry, oil and gas industry, food industry, pulp and paper industry |
| Connection type | ISO 5211 |
Sketch of dimensions of butterfly valves DNOVA WBV3131N-2W-Fb DN50-300 PN16, stainless steel 304, NBR
Overall and installation dimensions of butterfly valves DNOVA WBV3131N-2W-Fb DN50-300 PN16, stainless steel 304, NBR:
| Diameter | A, mm | B, mm | C, mm | PCD, mm | ØD, mm | H, mm | Q° |
| DN50 | 72.5 | 130.5 | 43 | 125 | 19 | 220 | 45 |
| DN65 | 77.5 | 146.5 | 46 | 145 | 19 | 220 | 45 |
| DN80 | 92 | 156 | 46 | 160 | 19 | 220 | 22.5 |
| DN100 | 109 | 168.5 | 52 | 180 | 19 | 260 | 22.5 |
| DN125 | 127 | 190.5 | 56 | 210 | 19 | 260 | 22.5 |
| DN150 | 141 | 213.5 | 56 | 240 | 23 | 260 | 22.5 |
| DN200 | 166 | 246.5 | 60 | 295 | 23 | - | 15 |
| DN250 | 203 | 283 | 68 | 355 | 28 | - | 15 |
| DN300 | 236 | 318 | 78 | 410 | 28 | - | 15 |
Sketch of dimensions of gearboxes DNOVA HGBF RQN
Overall and installation dimensions of DNOVA HGBF RQN gearboxes:
| Model | A, mm | B, mm | C, mm | D, mm | E, mm | F, mm | H, mm | d1, mm | D2, mm | D3, mm |
| HGB-1 | 165 | 127 | 84 | 66 | 12 | 47 | 73 | 35 | 81 | 50/70 |
| HGB-2 | 185 | 142 | 102 | 79 | 12 | 52 | 78 | 42 | 92 | 70(89) |
| HGB-3 | 250 | 190 | 140 | 112 | 16 | 68 | 108 | 55 | 125 | 70/102/125 |
| HGB-4 | 300 | 220 | 164 | 120 | 20 | 71 | 111 | 70 | 140 | 102/140(125) |
Sketch of materials of butterfly valves DNOVA WBV3131N-2W-Fb DN50-300 PN16, stainless steel 304, NBR
Materials of parts of butterfly valves DNOVA WBV3131N-2W-Fb DN50-300 PN16, stainless steel 304, NBR:
| No. | Part name | Material |
| 1 | Frame | stainless steel 304 |
| 2 | Disk | stainless steel 304 |
| 3 | Saddle seal | PTFE |
| 4 | Stock | Stainless steel SS 416 |
| 5 | Lever | carbon steel |
Sketch of gearboxes DNOVA HGBF RQN
Design of DNOVA HGBF RQN gearboxes:
| No. | Name | Material |
| 1 | Transparent indicator cover | PC Plycarton resin |
| 2 | Screw | steel 304 |
| 3 | Screw | steel 304 |
| 4 | Lid | aluminum ADC 12 |
| 5 | Worm gear reducer | cast iron QT450 |
| 6 | Adjusting screw | steel 304 |
| 7 | Rack | steel 45 |
| 8 | Case | butadiene-acrylonityl rubber |
| 9 | Sleeve | PZ2175 based on ketones |
| 10 | Bearing | alloy steel |
| 11 | Frame | aluminum ADC 12 |
| 12 | Bearing | alloy steel |
| 13 | Seal | rubber |
| 14 | Washer | steel 304 |
| 15 | Screw | steel 304 |
| 16 | Axis | steel 45 |
| 17 | Limit switch | - |
| 18 | Sealing ring | butadiene-acrylonityl rubber |
Specifications
Delivery
The cost and delivery time for your order depend on several factors, including the specific product you are ordering, the quantity, and the country of destination. Each product may have different manufacturing lead times and shipping requirements, which can affect the overall delivery schedule.
To get the most accurate and up-to-date information on delivery costs and timelines, we recommend contacting our sales managers. They will be happy to provide you with a detailed quote and estimated delivery time based on your specific requirements.
Please feel free to reach out to us for any questions or further assistance regarding your order.