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
- Heat Supply
Butterfly valves are designed for use as shut-off or regulating valves for flow control in heat supply systems, water supply systems, in technological processes of food, chemical, oil and gas, pulp and paper and other industries.
Electric quarter-turn actuators QT2-N-xEM-O1-x-U1 with thermal protection and heater are designed for remote and local control of shut-off pipeline valves having a quarter-turn shut-off valve. They are used in various branches of national economy: in gas, oil, metallurgy, food industry, housing and utilities, etc.
Technical parameters of DNOVA WBV0232E-2W-Fb-H, body material - Aluminum alloy, disk material - stainless steel AISI 316L, seal - EPDM, electric actuator QT-N-EM-O1-220VAC-U1 HARK:
| Nominal diameter DN, mm | 25 / 32 |
| Working pressure PN, bar | 16 |
| Working medium temperature t, °C | -20 to +120 |
| Working medium | cold and hot water, air without oil and grease impurities, other media neutral to the material |
| Flow direction | double-sided |
| Connection to pipeline | interflanged |
| Body material | aluminum alloy |
Butterfly valves WBV0232E-2W-Fb-H, body material - Aluminum alloy, disk material - stainless steel AISI 316L, seal - EPDM, electric actuator QT-N-EM-O1-220VAC-U1 HARK
Dimensions and dimensions of DNOVA WBV0232E-2W-Fb-H, body material - Aluminum alloy, disk material - stainless steel AISI 316L, seal - EPDM, electric actuator QT-N-EM-O1-220VAC-U1 HARK:
| DN | Electric actuator model | Dimensions, mm | ||
| B | A | L | ||
| 25 | QT-N-020EMT | 44.5 | 93 | 241.8 |
| 32 | 44.5 | 93 | 241.8 | |
Sketch Butterfly valves WBV0232E-2W-Fb-H, body material - Aluminum alloy, disk material - stainless steel AISI 316L, seal - EPDM, electric actuator QT-N-EM-O1-220VAC-U1 HARK
Materials of parts DNOVA WBV0232E-2W-Fb-H, body material - Aluminum alloy, disk material - stainless steel AISI 316L, seal - EPDM, electric actuator QT-N-EM-O1-220VAC-U1 HARK:
| № | Part name | Material |
| 1 | Body | aluminum alloy |
| 2 | Seat seal | EPDM |
| 3 | Pin | SS304 stainless steel |
| 4 | Disk | 316L stainless steel |
| 5 | Stem | SS410 stainless steel |
| 6 | O-ring | EPDM |
| 7 | Plate | steel 45 |
| 8 | Handle | ductile iron |
| 9 | Bolt | SS201 stainless steel |
| 10 | Gasket | SS201 stainless steel |
| 11 | Nut | SS201 stainless steel |
| 12 | Gasket | stainless steel SS201 |
Sketch of parts and materials Butterfly valves WBV0232E-2W-Fb-H, body material - Aluminum alloy, disk material - stainless steel AISI 316L, seal - EPDM, electric actuator QT-N-EM-O1-220VAC-U1 HARK
Technical actuators QT-N-xEM-O1-x-U1 HARK:
| Electric drive type | quarter-turn |
| Motor type | asynchronous |
| Swivel angle, ° | 90±5 |
| Housing material | aluminum alloy, epoxy powder coated |
| Shaft material | alloy steel |
| Supply voltage | 220VAC |
| Cable gland | 2xM18 gland |
| Connection type | ISO 5211 |
| Self-locking device | self-locking worm and worm gear |
| Automatic shut-off in open, closed and jammed positions | 2 limit switches + 2 additional switches (dry contact); |
| Thermal protection | switching on at 120°C ±5°C; switching off at 97°C ±5°C |
| Mechanical limitation of output shaft rotation | 2 external adjustable stops |
| Enclosure protection class | IP67 |
| Noise level, dB | ≤ 50 |
| Heater power, W | 5 |
| Ambient temperature, °C | -20 to +70 |
| Ambient humidity | ≤95% (25°C) |
| Housing explosion protection | no |
Image of QT-N-xEM-O1-x-U1 HARK actuators
Dimensions and dimensions of QT-N-xEM-O1-x-U1 HARK actuators:
| Dimensions, mm | Stem size, square | ISO 5211 | |||||
| L | H | A | B | C | D | ||
| 241,8 | 157,5 | 119 | 118 | 112,3 | 26 | 22x22 | F07/F10 |
Sketch of overall dimensions of actuators QT-N-xEM-O1-x-U1 HARK
Schematic diagram of QT-N-xEM-O1-x-U1 HARK actuators:
| № | Name |
| 1 | Position indicator |
| 2 | Top cover |
| 3 | Control board |
| 4 | Condenser |
| 5 | Pressure cams |
| 6 | Output shaft with worm wheel |
| 7 | Housing |
| 8 | Output shaft stroke limiters |
| 9 | Worm shaft |
| 10 | Electric motor |
| 11 | Gearbox |
| 12 | Gearbox cover |
Schematic diagram of QT-N-xEM-O1-x-U1 HARK actuators
- Body material
- Aluminum alloy
- Maximum allowable temperature
- 120 °C
- Connection type
- Compact flanged
- Control type
- Electric actuator
- Operating environment
- Water, Air, and Neutral Media
- Applications
- Water Supply and Heat Supply
- Nominal pressure
- 16 bar
- Type of seal
- EPDM
- Disc material
- Stainless steel AISI 316L
- Explosion-proof
- No
- Thermal protection
- Yes
- Manual override
- Hexagon
- Limit switches
- Yes
- Type of electric actuator
- Quarter-turn
- 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