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
Butterfly valves are designed for use as shut-off or regulating valves to control flows in heat supply systems, water supply systems, in technological processes of food, chemical, oil and gas, pulp and paper and other industries.
Principle of operation: The valves are opened and closed by turning the disk by 90°. Opening is performed by turning the handle counterclockwise, closing - clockwise.
Installation dimensions and sizes of water butterfly valve DNOVA WBV1631N-2W-Fb-R, body material - cast iron QT450, disk material - stainless steel AISI 304, seal - NBR, gearbox:
| Model | A, mm | B, mm | C, mm | D, mm | N-M | L, mm | W, mm |
| DN200 | 166 | 246.5 | 60 | 295 | 12-M20 | 205 | 270 |
| DN250 | 203 | 283 | 68 | 355 | 12-M24 | 205 | 270 |
| DN300 | 236 | 318 | 78 | 410 | 12-M24 | 190 | 270 |
Details and materials of water butterfly valve DNOVA WBV1631N-2W-Fb-R, body material - cast iron QT450, disk material - stainless steel AISI 304, seal - NBR, gearbox:
| № | Part name | Material |
| 1 | Body | Cast iron QT450 |
| 2 | Disk | Stainless steel 304 |
| 3 | Seat seal | NBR |
| 4 | Stem | Stainless steel SS 416 |
| 5 | Gearbox | - |
- Body material
- cast iron QT450
- Maximum allowable temperature
- 90 °C
- Connection type
- Compact flanged
- Control type
- Gearbox
- Nominal pressure
- 16 bar
- Type of seal
- NBR
- Disc material
- Stainless steel AISI 304
- 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