In detail
What it is made of
How it works
Quarter-turn lever
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
Water Butterfly Valve DNOVA is intended for use as shut-off or control valves for flow control in heat supply systems, water supply systems, in technological processes in the food, chemical, oil and gas, pulp and paper and other industries.
Basic technical data and characteristics of butterfly valves
| Parameter | Value |
| Nominal diameter DN, mm | 40 – 300 |
| Nominal pressure PN, bar | 16 |
| Flow direction | Bidirectional |
| Operating medium temperature, °C | -20 to +120 |
| Ambient temperature, °C | -20 to +100 |
| Shut-off tightness | Class A |
| Working medium | Cold and hot water, oil-free and grease-free air, stationary air conditioning, mildly aggressive media, other media neutral to material |
| Body material | Cast iron GGG50 |
| Disc material | Cast iron GGG40 |
| Pipeline connection | interflange |
| Control type | Handle |
| Average service life, years | 5 |
| Average cycle life (open/close cycles) | 20,000 (under non-aggressive media and average pressure and temperature conditions) |
Gate dimensions DNOVA Water Butterfly Valve DNOVA WBV1432E-2W-Fb-H
| DN | H | H1 | H2 | L | L1 | ØDm | ØDk | D2 (flow section) |
| mm | ||||||||
| 40 | 146 | 74 | 25 | 43 | 216 | 73 | 75 | 50 |
| DN | H | H1 | H2 | L | L1 | ØDm | ØDk |
| mm | |||||||
| 50 | 146 | 74 | 25 | 43 | 216 | 73 | 84.5 |
| 65 | 156 | 80 | 25 | 46 | 216 | 86 | 104.5 |
| 80 | 163 | 100 | 25 | 46 | 216 | 103 | 123.5 |
| 100 | 180 | 116 | 25 | 52 | 255 | 131 | 139.5 |
| 125 | 189 | 123 | 25 | 56 | 255 | 155 | 169.5 |
| 150 | 206 | 137 | 25 | 56 | 255 | 183 | 196 |
| 200 | 232 | 165 | 35 | 60 | 370 | 235 | 247 |
| 250 | 275 | 203 | 35 | 68 | 370 | 286 | 304 |
| 300 | 314 | 235 | 35 | 78 | 370 | 338 | 358 |
Sketch of gates DNOVA Water Butterfly Valve DNOVA WBV1432E-2W-Fb-H
Materials of parts of rotary disc valves DNOVA Water Butterfly Valve DNOVA WBV1432E-2W-Fb-H
| № | Name | Material |
| 1 | Body | cast iron GGG50 |
| 2 | Cuff | EPDM |
| 3 | Disk | cast iron GGG40 |
| 4 | Stock | stainless steel SS 416/2Cr13 |
| 5 | Hairpin | stainless steel AISI 316L |
| 6 | Sleeve | NBR |
| 7 | Sealing ring | NBR |
| 8 | Fixing plate | carbon steel |
| 9 | Handle with lock | carbon steel |
Sketch of materials for rotary disc valves DNOVA Water Butterfly Valve DNOVA WBV1432E-2W-Fb-H
- Body material
- Cast iron GGG50/EN-GJS-500-7
- Maximum allowable temperature
- 110 °C
- Connection type
- Compact flanged
- Control type
- Handle
- Nominal pressure
- 16 bar
- Type of seal
- EPDM
- Disc material
- Cast iron GGG40/EN-GJS-400-15
- 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.