How it works
Electric quarter-turn actuator
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
- Water
- Air
- Neutral Media
- Water Supply
- Heating
- Chemical Industry
- Oil And Gas Industry
- Food Industry
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.
Operating principle: The valves are opened and closed by turning the disk by 90°. Opening is performed by turning the handle counterclockwise, closing - clockwise.
Electric quarter-turn actuators of explosion-proof version are designed for remote and local control of the rotation of the shut-off body by 0° ~ 270° of such types as ball valve, etc. They are widely used in various branches of national economy: in gas, oil, metallurgical, food industry, housing and communal services, etc. Suitable for use in industrial explosion hazardous areas.
Technical parameters of water butterfly valve DNOVA WBV3131E-2W-Fb-H, body material - Stainless steel AISI 304, disk material - Stainless steel AISI 304, seal - EPDM, electric actuator QT-EX-xEM-O2 380V:
|
Characteristic |
Value |
|
Type of valve |
Rotary disc |
|
Diameter |
50-300 mm |
|
Nominal pressure |
16 bar |
|
Working medium temperature |
From -20 to +120°C |
|
Application |
Water supply, heat supply, chemical industry, oil and gas industry, food industry, pulp and paper industry |
|
Type of connection |
Interflanged |
|
Type of control |
Electric actuator |
|
Tightness class |
A |
|
Country of manufacture |
China |
|
Service life |
10 years |
|
Warranty |
12 months |
Technical characteristics of quarter-turn actuators DNOVA QT-EX-xEM-O2 380V:
| Parameter | Value |
| Enclosure protection class | IP67 |
| Control type | ON / OFF |
| Rotation angle, ° | 90±10 |
| Power supply voltage | 220 VAC, 380 VAC, 24 VDC |
| Motor type | Asynchronous motor with squirrel cage rotor |
| Limit switches | 1xOpen/Close, SPDT, 250VAC 10A |
| Auxiliary limit switches | 1xOpen/Close, SPDT, 250VAC 10A |
| Torque switch | 1xOpen/Close, SPDT, 250VAC 10A (except QT-EX-010EM-O2-x-U1) |
| Internal thermal protection | Off at 115°C ±5°C, on at 97°C ±5°C |
| Visual position indicator | Available |
| Manual override | Handwheel |
| Electric actuator position self-locking | Self-locking by worm gear mechanism |
| Mechanical limit stops | Two external adjustable stops |
| Cable entry | M20×1.5 and M36×2 |
| Ambient temperature, °C | from -20 to +70 |
| Lubrication | Aluminum-based (EP type) |
| Explosion-proof standard | ExdIICT4 |
| Enclosure | Aluminum alloy with powder epoxy anti-corrosion coating |
| Max ambient humidity, % | 90 (non-condensing) |
| Average number of open/close cycles | 60 |
Dimensions and installation sizes of water butterfly valve DNOVA WBV3131E-2W-Fb-H, body material - Stainless steel AISI 304, disk material - Stainless steel AISI 304, seal - EPDM, electric actuator QT-EX-xEM-O2 380V:
| 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 |
Overall and installation sizes of quarter-turn actuators DNOVA QT-EX-xEM-O2 380V:
| Model | W | K | K1 | A | B | D |
| mm | ||||||
| QT-EX-010EM | 160 | 70 | 230 | Ø90 | Ø70 | Ø50 |
| QT-EX-015EM | 160 | 70 | 230 | Ø90 | Ø70 | Ø50 |
| QT-EX-020EM | 160 | 80 | 250 | Ø120 | Ø102 | Ø70 |
| QT-EX-030EM | 160 | 72 | 298 | Ø150 | Ø102 | Ø70 |
| QT-EX-050EM | 160 | 72 | 298 | Ø150 | Ø102 | Ø70 |
| QT-EX-080EM | 160 | 104 | 296 | Ø180 | Ø125 | Ø102 |
| QT-EX-100EM | 160 | 104 | 296 | Ø180 | Ø125 | Ø102 |
| QT-EX-160EM | 160 | 104 | 296 | Ø210 | Ø165 | Ø125 |
| QT-EX-200EM | 160 | 104 | 296 | Ø210 | Ø165 | Ø125 |
| Model | F | L | L1 | H | n-C | n-E |
| mm | ||||||
| QT-EX-010EM | Ø16 | 240 | 68 | 270 | 4-M8 | 4-M6 |
| QT-EX-015EM | Ø16 | 240 | 68 | 270 | 4-M8 | 4-M6 |
| QT-EX-020EM | Ø30 | 260 | 75 | 280 | 4-M10 | 4-M8 |
| QT-EX-030EM | Ø30 | 290 | 82 | 320 | 4-M12 | 4-M8 |
| QT-EX-050EM | Ø30 | 290 | 82 | 320 | 4-M12 | 4-M8 |
| QT-EX-080EM | Ø40 | 333 | 82 | 320 | 4-M14 | 4-M12 |
| QT-EX-100EM | Ø40 | 333 | 93 | 350 | 4-M14 | 4-M12 |
| QT-EX-160EM | Ø60 | 333 | 93 | 350 | 4-M16 | 4-M14 |
| QT-EX-200EM | Ø60 | 333 | 93 | 350 | 4-M16 | 4-M14 |
Materials of parts of water butterfly valve DNOVA WBV3131E-2W-Fb-H, body material - Stainless steel AISI 304, disk material - Stainless steel AISI 304, seal - EPDM, electric actuator QT-EX-xEM-O2 380V:
|
№ |
Part name |
Material |
|
1 |
Body |
Stainless steel 304 |
|
2 |
Disc |
Stainless steel 304 |
|
3 |
Seat seal |
EPDM |
|
4 |
Stem |
Stainless steel SS 416 |
|
5 |
Handle |
Carbon steel |
- Body material
- Stainless steel AISI 304
- Maximum allowable temperature
- 120 °C
- Connection type
- Compact flanged
- Control type
- Electric actuator
- 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
- Explosion-proof
- Yes
- Manual override
- Handwheel
- Limit switches
- Yes
- Type of electric actuator
- Quarter-turn
- Supply voltage
- 380 V
- 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