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 90°. Opening is done by turning the handle counterclockwise, closing - clockwise. A special feature of the valves of this series is the complete coating of the flow part and the disk with PTFE material, which eliminates contact of the working medium with the materials of the main parts.
The DNOVA HGB 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.
A distinctive feature of this series of valves is that the flow path and disc are completely coated with PTFE, which prevents the working medium from coming into contact with the materials of the main components.
Technical characteristics of butterfly valves DNOVA WBV3434Pf-2W-Fb DN50-250 PN16 carbon steel WCB, PTFE:
| Characteristic | Meaning |
| Shutter type | rotary disc |
| Diameter | 50-250 mm |
| Nominal pressure | 16 bar |
| Working environment temperature | from -10 to +150°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 |
Reducers DNOVA HGB RQN
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 WBV3434Pf-2W-Fb DN50-250 PN16 carbon steel WCB, PTFE
Overall and installation dimensions of butterfly valves DNOVA WBV3434Pf-2W-Fb DN50-250 PN16 carbon steel WCB, PTFE:
| Diameter | L, mm | D1, mm | D2, mm | Z-Ød, mm | H1, mm |
| DN50 | 43 | 125 | 100 | 2-Ø18 | 80 |
| DN65 | 46 | 145 | 120 | 2-Ø18 | 90 |
| DN80 | 46 | 160 | 135 | 4-Ø18 | 100 |
| DN100 | 52 | 180 | 155 | 4-Ø18 | 110 |
| DN125 | 56 | 210 | 185 | 4-Ø18 | 120 |
| DN150 | 56 | 240 | 210 | 4-Ø18 | 150 |
| DN200 | 60 | 295 | 265 | 4-Ø18 | 170 |
| DN250 | 68 | 355 | 320 | 4-Ø18 | 190 |
| DN300 | 78 | 410 | 375 | 4-Ø18 | 230 |
Sketch of dimensions of gearboxes DNOVA HGB RQN
Overall and installation dimensions of DNOVA HGB RQN gearboxes:
| Size | HGB RQN1-180Z | HGB RQN2-320Z | HGB RQN3-680Z | HGB RQN4-1200Z |
| D2, mm | 81 | 92 | 125 | 140 |
| D3, mm | 50/70 | 70 | 70/102/125 | 102/140 |
| d1, mm | 35 | 42 | 55 | 70 |
| A, mm | 165 | 185 | 250 | 300 |
| B, mm | 127 | 142 | 190 | 220 |
| C, mm | 84 | 102 | 140 | 164 |
| D, mm | 66 | 79 | 112 | 120 |
| E, mm | 12 | 12 | 16 | 20 |
| F, mm | 47 | 52 | 68 | 71 |
| H, mm | 73 | 78 | 108 | 111 |
Sketch of materials of butterfly valves DNOVA WBV3434Pf-2W-Fb DN50-250 PN16 carbon steel WCB, PTFE
Materials of parts of butterfly valves DNOVA WBV3434Pf-2W-Fb DN50-250 PN16 carbon steel WCB, PTFE:
| № | Part Name | Material |
|---|---|---|
| 1 | Body |
DN50÷200 – Carbon steel WCB, lined with PTFE; |
| 2 | Disc | DN50÷200 – Carbon steel WCB, lined with PTFE; DN150÷200 – Carbon steel WCB, lined with PTFE; DN250÷300 – Carbon steel WCB, lined with PFA (enhanced PTFE) |
| 3 | Shaft | DN50÷200 – Stainless steel 2Cr13; DN150÷250 – Stainless steel 2Cr13; DN300 – Steel 45 |
| 4 | Seat seal | PTFE |
Sketch of gearboxes DNOVA HGBF RQN
Design of DNOVA HGBF RQN gearboxes:
| Item No. | Details | Material |
| 1 | Transparent indicator cover | polycarbonate |
| 2 | Screw | stainless steel 304 |
| 3 | Screw | stainless steel 304 |
| 4 | Lid | ADC 12 aluminum alloy |
| 5 | Worm wheel | malleable iron QT450 |
| 6 | Adjusting screw | stainless steel 304 |
| 7 | Worm shaft | steel 45 |
| 8 | Plug | NBR |
| 9 | Sleeve | polymer PZ2175 |
| 10 | Bearing | alloy steel |
| 11 | Frame | ADC 12 aluminum alloy |
| 12 | Bearing | alloy steel |
| 13 | Seal | rubber |
| 14 | Washer | stainless steel 304 |
| 15 | Screw | stainless steel 304 |
| 16 | Axis | steel 45 |
| 17 | Sealing ring | NBR |
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.