Parts
How it works
Manual quarter-turn gearbox
Butterfly disc
The number that matters
Nominal pressure
16bar
The pressure class of the valve body at 20 °C. Working limits depend on the medium and its temperature.
Construction
Parts and materials
Applications
Media and industries
- Mineral And Vegetable Oils
- Animal Fats
- Greases And Fuels
- Hot Air
A water butterfly valve is a type of valve used to control the flow of water or other fluids through a pipeline. It gets its name from the butterfly-shaped disc inside the valve that rotates to open or close the flow. When the valve is fully open, the disc is positioned parallel to the flow direction, allowing unobstructed passage of water. When the valve is closed, the disc is turned perpendicular to the flow, effectively blocking the flow of water. Water butterfly valves are commonly used in various industries and applications, including water treatment plants, sewage systems, irrigation systems, and industrial processes. They are known for their compact design, lightweight construction, and ease of installation. These valves are often preferred for their quick operation, as the disc can be opened or closed with a simple quarter-turn motion. Butterfly valves can be operated manually with a handle or lever, or they can be automated using electric, pneumatic, or hydraulic actuators to control the valve remotely. They are known for their low-pressure drop and relatively low cost compared to other types of valves. It's worth noting that water butterfly valves are specifically designed for use with water and compatible fluids. Different materials and designs may be required for valves intended for use with corrosive or high-pressure fluids. It's important to select the appropriate type of butterfly valve based on the specific application and fluid requirements.
General parameters of disc gate valves DNOVA WBV3432V-2W-Fb RDN DN50-300:
| Nominal diameter DN, mm | 50 – 300 |
| Nominal pressure PN, MPa (kg/cm2) | 1.6 (16) |
| Direction of flow | bilateral |
| Ambient temperature t, °C | From -20 to +200: for VITON |
| Working environment | VITON: mineral and vegetable oils, animal fats, plastic lubricants and fuel, hot air, steam |
| Connection to the pipeline | interflange |
Butterfly valves DNOVA WBV3432V-2W-Fb DN50-300 Ru16, body - carbon steel WCB, disc - stainless steel 316L, seal - Viton, with RDN RQN reducer
Material specification of disc gate valves DNOVA WBV3432V-2W-Fb RDN DN50-300:
| № | Name | Material |
| 1 | Body | WCB steel or AISI 316L stainless steel |
| 2 | Cuff | VITON |
| 3 | Disc | AISI 316L stainless steel |
| 4 | Stem | SS 416/2Cr13 stainless steel |
| 5 | Pin | AISI 316L stainless steel |
| 6 | Bushing | EPDM |
| 7 | Sealing ring | EPDM |
| 8 | Fixing plate | Carbon steel |
Sketch Butterfly valves DNOVA Water Butterfly Valve DNOVA
Maximum torques of disc gate valves DNOVA WBV3432V-2W-Fb RDN DN50-300:
| D.N. | Torque at 16 bar, Nm |
| 50 | 50 |
| 65 | 50 |
| 80 | 50 |
| 100 | 50 |
| 125 | 80 |
| 150 | 100 |
| 200 | 300 |
| 250 | 400 |
| 300 | 400 |
General parameters for gearboxes DNOVA:
| Operating temperature t, °C | from –40 to +120 (150) from –60 to +120 (150) (low temperature version) |
| Working environment | Filtered compressed air or non-aggressive gases, oils |
| Degree of protection | IP67 |
| Working pressure, Bar | 16 |
| Application | water supply, heating, ventilation, energy, air conditioning |
| Installation | horizontal/vertical |
| Stroke adjustment | From -5° to 95° |
| Compliance with the standard | DIN/ISO 5211 |
Reducer DNOVA
Gearbox dimensions DNOVA:
| Model | Gear ratio | A | B | ØC | D | J | G | T | ØF | 4M | HxH | ISO flange | Weight |
| mm | |||||||||||||
| RDN-1 | 24:1 | 170 | 130 | 160 | 100 | 45 | 120 | 50 | 50 | 4-M8 | 9x9 | F05 | 2.2 |
| RDN-2 | 24:1 | 170 | 130 | 160 | 100 | 45 | 120 | 50 | 50 | 4-M8 | 11x11 | F05 | 2.18 |
| RDN-3 | 24:1 | 170 | 130 | 160 | 100 | 45 | 120 | 50 | 70 | 4-M8 | 14x14 | F07 | 2.2 |
| RDN-4 | 30:1 | 240 | 160 | 260 | 130 | 55 | 150 | 70 | 100 | 4-M10 | 17x17 | F10 | 5.355 |
| RDN-5 | 30:1 | 240 | 160 | 260 | 130 | 55 | 150 | 70 | 100 | 4-M12 | 22x22 | F10 | 6 |
- Body material
- Carbon steel
- Maximum allowable temperature
- 200 °C
- Connection type
- Compact flanged
- Control type
- Gear
- Operating environment
- Mineral And Vegetable Oils وAnimal Fats وGreases And Fuels وHot Air
- Nominal pressure
- 16 bar
- Type of seal
- Viton
- Disc material
- Stainless steel AISI 316L/1.4404
- Torque
- 420 Nm
- Pneumatic actuator
- No
- Manual override
- Yes
- Limit switches
- No
- Country of origin
- China
Production. Usually 7–14 business days after you approve the quotation and pay. Made-to-specification items are confirmed in the quotation.
Freight. Not charged at checkout. A manager quotes air and sea freight to your port or airport, and nothing ships until you approve the price and the freight.
To North America. From approval and payment to the destination port or airport: air 14–24 days, sea 32–60 days. Estimates, not guarantees.
Terms. EXW Ningbo or FOB Ningbo Port; CIF on request. The agreed term is written on the Proforma Invoice.