How it works
Modulating quarter-turn actuator
Butterfly disc
The number that matters
Nominal pressure
25bar
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
- Steam
- Oil
- Oil Products
- Corrosive Media
- Natural Gas
- Gaseous Media
Butterfly valves are designed for use as shut-off or regulating valves for controlling flows in heat supply systems, water supply systems, in technological processes of food, chemical, oil and gas, pulp and paper and other industries. The valves are opened and closed by turning the disk by 90°. The triple eccentricity design reduces friction at the disk and seat contact points, which increases the reliability and service life of the gate. In this design, the stem is offset relative to the center axis of the disc and the center axis of the pipeline, and the sealing surfaces are asymmetrically shaped. The combination of the three displacements at the moment of pressure and opening of the sealing surfaces ensures that the sealing surfaces are completely frictionless, helping to minimize seat and seal wear throughout the life of the gate.
Electric quarter-turn actuators are designed for remote and local control of 0° ~ 270° rotation of a shut-off valve of such types as ball valve, etc.
Operating principle: electric actuators are mounted directly on pipeline valves. The mounting dimensions comply with the international standard ISO 05211 / DIN3337. Four microswitches are used to limit the travel of the output shaft to the end positions of the valve actuator. The actuators are designed for operation in nominal short-time mode S2.
Technical characteristics of water butterfly valve DNOVA WBV3EX-3432M-1W-F-ISO, body material - Carbon steel, disk material - Stainless steel AISI 316, seal - Metal, electric actuator QT-N-xEM-A1 220V:
|
Parameter |
Value |
|
Type of gate |
Rotary disc |
|
Diameter |
50-125 mm |
|
Nominal pressure |
25 bar |
|
Working medium temperature |
From -45 to +425°C |
|
Application |
Water supply, heat supply, process pipelines |
|
Type of connection |
Flanged |
|
Type of control |
Electric actuator |
|
Tightness class |
A |
|
Service life |
10 years |
|
Warranty |
12 months |
Technical characteristics of quarter-turn actuators DNOVA QT-N-xEM-A1 220V:
|
Parameter |
Value |
|
Type of electric actuator |
Quarter-turn |
|
Supply voltage |
220V |
|
Ambient temperature |
From -20 to +70 °C |
|
Application |
Water supply, heat supply, technological pipelines |
|
Explosion protection |
No |
|
Type of connection |
ISO 5211 |
Overall and installation sizes of water butterfly valve DNOVA WBV3EX-3432M-1W-F-ISO, body material - Carbon steel, disk material - Stainless steel AISI 316, seal - Metal, electric actuator QT-N-xEM-A1 220V:
| Model | DN | L | D | D1 | D2 | n–Ød | b | H1 | H2 |
| mm | |||||||||
| DN50 | 50 | 108 | 160 | 125 | 99 | 4–Ø18 | 20 | 102 | 78 |
| DN65 | 65 | 112 | 180 | 145 | 118 | 8–Ø18 | 22 | 112 | 72 |
| DN80 | 80 | 114 | 195 | 160 | 132 | 8–Ø18 | 24 | 122 | 78 |
| DN100 | 100 | 127 | 230 | 190 | 156 | 8–Ø22 | 24 | 155 | 78 |
| DN125 | 125 | 140 | 270 | 220 | 184 | 8–Ø26 | 26 | 157 | 95 |
| DN150 | 150 | 140 | 300 | 250 | 211 | 8–Ø26 | 28 | 170 | 95 |
| DN200 | 200 | 152 | 360 | 310 | 274 | 12–Ø26 | 30 | 200 | 102 |
| DN250 | 250 | 165 | 425 | 370 | 330 | 12–Ø30 | 32 | 247 | 108 |
| DN300 | 300 | 178 | 485 | 430 | 389 | 16–Ø30 | 34 | 274 | 110 |
Overall and installation sizes of quarter-turn actuators DNOVA QT-N-xEM-A1 220V:
| Model | X, mm | Z, mm | Y, mm | H, mm | G, mm |
| QT-003 | 123 | 113 | 123 | - | - |
| QT-005 | 160 | 121 | 146 | 40 | 114 |
| QT-008 | 188 | 127 | 145 | 40 | 114 |
| QT-010 | 189 | 129 | 163 | 40 | 114 |
| QT-015 | 189 | 129 | 163 | 40 | 114 |
| QT-030 | 268 | 164 | 212 | 40 | 114 |
| QT-040 | 268 | 164 | 212 | 40 | 114 |
| QT-060 | 268 | 164 | 255 | 40 | 114 |
Materials of water butterfly valve DNOVA WBV3EX-3432M-1W-F-ISO, body material - Carbon steel, disk material - Stainless steel AISI 316, seal - Metal, electric actuator QT-N-xEM-A1 220V:
|
№ |
Part name |
Material |
|
1 |
Body |
Steel WCB |
|
2 |
Disc |
Stainless steel 316 |
|
3 |
Stem |
Stainless steel 316 |
|
4 |
Seat seal |
Metal (D507 hardfacing) + graphite |
|
5 |
Gland seal |
Stainless steel 316 + graphite |
Construction of quarter-turn actuators DNOVA QT-N-xEM-A1 220V:
|
№ |
Name |
|
1 |
Output shaft |
|
2 |
Cable lock |
|
3 |
Mechanical limiter |
|
4 |
Manual wrench |
|
5 |
Body |
|
6 |
Modular box |
|
7 |
Cover |
|
8 |
Viewing window |
|
9 |
Dust protection |
- Body material
- Carbon steel
- Maximum allowable temperature
- 425 °C
- Connection type
- Flanged
- Control type
- Electric actuator
- Operating environment
- Water, Air, Steam, Oil, Oil Products, Corrosive Media, Natural Gas, and Gaseous Media
- Applications
- Water Supply, Heat Supply, and Process Pipelines
- Nominal pressure
- 25 bar
- Type of seal
- Metal
- Disc material
- Stainless steel AISI 316
- Explosion-proof
- No
- Manual override
- Hexagon
- Limit switches
- Yes
- Type of electric actuator
- Quarter-turn
- Control signal
- 4-20 mA
- Supply voltage
- 220 V
- Angle of rotation
- 90°
- 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