How it works
Quarter-turn lever
Butterfly disc
Limit-switch box
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
- Water
- Air
- Neutral Media
- Water Supply
- Heating
- Chemical Industry
- Oil And Gas Industry
- Food Industry
The rotary disc valve is designed for use as a shut-off or control valve for flow control 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.
Limit switches are designed to monitor the position of the disk of rotary disc valves with a handle in control and automation systems. The operating principle of the limit switch is based on mechanical action on the actuator, which results in closing or opening of the electrical circuit.
Technical characteristics of butterfly valves DNOVA WBV3131E-2W-Fb DN50-150 PN16, stainless steel 304, EPDM:
| Characteristic | Meaning |
| Shutter type | rotary disc |
| Diameter | 50-250 mm |
| Nominal pressure | 16 bar |
| Working environment temperature | from -20 to +120°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 |
Limit switches DNOVA LS-103 250V 6A
Technical characteristics of limit switches DNOVA LS-103 250V 6A:
| Characteristic | Meaning |
| Limit switch model | LS-103 |
| Nominal voltage | 250V |
| Maximum switching current | 6A |
| Frequency | 50 Hz |
| Contact configuration | N/Z + N/O instant action |
| Ambient temperature | from -5℃ to +65℃ |
| Degree of protection | IP64 |
| Body material | plastic |
| Head movement | linear (plunger) |
| Permissible humidity | 95% |
| Contact resistance | 25 Mohm (initial value) |
| Nominal insulation resistance | 100 Mohm (500 VDC) |
| Cable entry | max Ø12 mm |
Sketch of dimensions of butterfly valves DNOVA WBV3131E-2W-Fb DN50-150 PN16, stainless steel 304, EPDM
Overall and installation dimensions of butterfly valves DNOVA WBV3131E-2W-Fb DN50-150 PN16, stainless steel 304, EPDM:
| 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 limit switches DNOVA LS-103 250V 6A
Overall and installation dimensions of limit switches DNOVA LS-103 250V 6A:
| Model | A, mm | B, mm | C, mm | D, mm | E, mm |
| LS-103 | 30 | 30 | 53 | 30.5 | 24 |
Sketch of materials of butterfly valves DNOVA WBV3131E-2W-Fb DN50-150 PN16, stainless steel 304, EPDM
Materials of parts of butterfly valves DNOVA WBV3131E-2W-Fb DN50-150 PN16, stainless steel 304, EPDM:
| No. | Part name | Material |
| 1 | Frame | stainless steel 304 |
| 2 | Disk | stainless steel 304 |
| 3 | Saddle seal | Viton |
| 4 | Stock | Stainless steel SS 416 |
| 5 | Lever | carbon steel |
- Body material
- Stainless steel AISI 304
- Maximum allowable temperature
- 120 °C
- Connection type
- Compact flanged
- Control type
- Handle
- Operating environment
- Water, Air, and Neutral Media
- Applications
- Water Supply, Heating, Chemical Industry, Oil And Gas Industry, Food Industry, and Pulp And Paper Industry
- Nominal pressure
- 16 bar
- Type of seal
- EPDM
- Disc material
- Stainless steel AISI 304
- Limit switches
- Yes
- 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.
Total items
Product subtotal