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
- Industry
- Heating Systems
DNOVA butterfly valves are 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.
Electric quarter-turn actuators DNOVA QT2-N-xEM-O1-x-U1 with thermal protection and heater are designed for remote and local control of shut-off pipeline valves with a quarter-turn shut-off element. They are used in various sectors of the national economy: in the gas, oil, metallurgy, food industry, in housing and communal services, etc.
Butterfly valves DNOVA WBV1331E-2W-FH DN50-200 PN16 flanged, body - cast iron GGG40, disc - stainless steel 304, seal - EPDM, with 1/4-turn electric actuator QT-N-EM-O1-380VAC-U1 380V HARK
Technical characteristics of DNOVA WBV1331E-2W-FH flanged butterfly valves DN50-200 PN16, body - cast iron GGG40, disc - stainless steel 304, seal - EPDM, with 1/4-turn electric actuator QT-N-EM-O1-380VAC-U1 380V HARK:
| Nominal diameter DN, mm | 50 - 200 |
| Working pressure PN, bar | 16 |
| Temperature of working environment t, °C | from -25 to +130 |
| Working environment | cold and hot water, air without impurities of oil and fat, other environments neutral to materials |
| Direction of flow | bilateral |
| Connection to the pipeline | flanged |
| Body material | cast iron GGG40 |
| Application areas | heating and water supply systems, industrial pipelines |
| Service life, years | 10 |
Sketch of dimensions and sizes of DNOVA WBV1331E-2W-FH flanged butterfly valves DN50-200 PN16, body - cast iron GGG40, disc - stainless steel 304, seal - EPDM, with 1/4-turn electric actuator QT-N-EM-O1-380VAC-U1 380V HARK:
Dimensions and sizes of DNOVA WBV1331E-2W-FH flanged butterfly valves DN50-200 PN16, body - cast iron GGG40, disc - stainless steel 304, seal - EPDM, with 1/4-turn electric actuator QT-N-EM-O1-380VAC-U1 380V HARK:
| D.N. |
Electric drive model |
Dimensions, mm | |||||
| D | D1 | D2 | n.d. | L | |||
| 50 | QT-N-020EMT | 165 | 125 | 99 | 4-18 | 241.8 | |
| 65 | QT-N-020EMT | 185 | 145 | 118 | 4-18 | 241.8 | |
| 80 | QT-N-020EMT | 200 | 160 | 132 | 8-18 | 241.8 | |
| 100 | QT-N-020EMT | 220 | 180 | 156 | 8-18 | 241.8 | |
| 125 | QT-N-040EMT | 250 | 210 | 184 | 8-18 | 241.8 | |
| 150 | QT-N-040EMT | 285 | 240 | 211 | 8-22 | 241.8 | |
| 200 | QT-N-040EMT | 340 | 295 | 266 | 12-22 | 241.8 | |
Materials of parts of DNOVA WBV1331E-2W-FH flanged butterfly valves DN50-200 PN16, body - cast iron GGG40, disc - stainless steel 304, seal - EPDM, with 1/4-turn electric actuator QT-N-EM-O1-380VAC-U1 380V HARK:
| No. | Part name | Material |
| 1 | Frame | cast iron GGG40 |
| 2 | Disk | stainless steel 304 |
| 3 | Saddle seal | EPDM |
| 4 | Stock | Stainless steel SS 420 |
Image of electric drives DNOVA
Technical electric drives DNOVA:
| Electric drive type | quarter turn |
| Engine type | asynchronous |
| Rotation angle, ° | 90±5 |
| Body material | aluminum alloy, epoxy powder coated |
| Shaft material | alloy steel |
| Supply voltage | 24V/DC |
| Cable entry | gland 2xM18 |
| Connection type | ISO 5211 |
| Self-locking device | self-locking worm and worm gear |
| Automatic shut-off in the open, closed and jammed positions |
2 limit switches + 2 additional switches (dry contact); |
| Thermal protection |
switch on at 120°C ±5°C; switch off at 97°C ±5°C |
| Mechanical limitation of output shaft rotation | 2 external adjustable stoppers |
| Housing protection class | IP67 |
| Noise level, dB | ≤ 50 |
| Heater power, W | 5 |
| Ambient temperature, °C | from -20 to +70 |
| Ambient humidity | ≤95% (25°C) |
| Explosion protection of the housing | No |
Sketch of overall dimensions of electric drives DNOVA:
Dimensions and sizes of electric drives DNOVA:
| Dimensions, mm | ISO 5211 | ||||||
| L | H | A | B | C | D | Rod size, square | |
| 241.8 | 157.5 | 119 | 118 | 112.3 | 26 | 22x22 | F07/F10 |
Scheme of the device of electric drives DNOVA:
Schematic diagram of the electric drives DNOVA QT-N-xEM-O1-x-U1 HARK:
| Item No. | Name |
| 1 | Position indicator |
| 2 | Top cover |
| 3 | Control board |
| 4 | Capacitor |
| 5 | Push cams |
| 6 | Output shaft with worm wheel |
| 7 | Frame |
| 8 | Output shaft travel limiters |
| 9 | Worm shaft |
| 10 | Electric motor |
| 11 | Reducer |
| 12 | Gearbox cover |
- Body material
- Cast iron GGG40/EN-GJS-400-15
- Maximum allowable temperature
- 130 °C
- Connection type
- Flanged
- Control type
- Electric actuator
- Operating environment
- Water, Air, and Neutral Media
- Applications
- Water Supply, Industry, and Heating Systems
- Nominal pressure
- 16 bar
- Type of seal
- EPDM
- Disc material
- Stainless steel AISI 304
- Explosion-proof
- No
- Thermal protection
- Yes
- Manual override
- Hexagon
- Limit switches
- Yes
- Type of electric actuator
- Quarter-turn
- Supply voltage
- 380 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