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 DNOVA 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 DNOVA 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 water butterfly valve DNOVA WBV1631E-2W-Fb-H, body material - cast iron QT450, disk material - Stainless steel AISI 304, seal - EPDM, electric actuator QT-N-EM-O1-220VAC-U1 HARK:
|
Nominal diameter DN, mm |
50–150 |
|
Operating pressure PN, bar |
16 |
|
Working medium temperature t, °C |
From -20 to +100 |
|
Working medium |
Cold and hot water, air without oil and grease, other media neutral to the material |
|
Flow direction |
Two-way |
|
Tightness class |
Class A |
|
Connection to pipeline |
Interflanged |
|
Body material |
Cast iron QT450 |
|
Disc material |
Stainless steel 304 |
|
Seal material |
EPDM |
|
Service life, years |
10 |
Dimensions and sizes of water butterfly valve DNOVA WBV1631E-2W-Fb-H, body material - cast iron QT450, disk material - Stainless steel AISI 304, seal - EPDM, electric actuator QT-N-EM-O1-220VAC-U1 HARK:
|
DN |
Model |
Size, mm |
|||||
|
A |
B |
C |
D |
N-M |
L |
||
|
50 |
QT-N-020EMT |
72.5 |
130.5 |
43 |
125 |
4-M16 |
123 |
|
65 |
77.5 |
146.5 |
46 |
145 |
4-M16 |
241.8 |
|
|
80 |
92 |
156 |
46 |
160 |
8-M16 |
241.8 |
|
|
100 |
109 |
168.5 |
52 |
180 |
8-M16 |
241.8 |
|
|
125 |
127 |
190.5 |
56 |
210 |
8-M16 |
241.8 |
|
|
150 |
141 |
213.5 |
56 |
240 |
8-M16 |
241.8 |
|
Materials of parts of water butterfly valve DNOVA WBV1631E-2W-Fb-H, body material - cast iron QT450, disk material - Stainless steel AISI 304, seal - EPDM, electric actuator QT-N-EM-O1-220VAC-U1 HARK:
|
№ |
Part name |
Material |
|
1 |
Body |
Cast iron QT450 |
|
2 |
Disc |
Stainless steel 304 |
|
3 |
Seat seal |
EPDM |
|
4 |
Stem |
Stainless steel SS 316 |
Technical characteristics of electric actuators DNOVA:
|
Parameter |
Value |
|
Type of electric actuator |
Quarter-turn |
|
Type of motor |
Asynchronous |
|
Angle of rotation, ° |
90±5 |
|
Body material |
Aluminum alloy with epoxy powder coating |
|
Shaft material |
Alloy steel |
|
Supply voltage |
24V/DC |
|
Cable entry |
Sealed gland 2xM18 |
|
Type of connection |
ISO 5211 |
|
Self-locking mechanism |
Worm and worm gear self-locking |
|
Automatic shut-off |
2 limit switches (open/closed positions and in case of jamming) |
|
Thermal protection |
Activation at 120°C ±5°C |
|
Insulation class |
F |
|
Mechanical output shaft rotation limit |
2 external adjustable stops |
|
Protection rating |
IP67 |
|
Noise level, dB |
≤ 50 |
|
Heater power, W |
5 |
|
Ambient temperature, °C |
From -20 to +70 |
|
Ambient humidity |
≤ 95% (at 25°C) |
|
Explosion-proof protection |
No |
Dimensions and sizes of electric actuators DNOVA:
| Size, mm | ISO 5211 | ||||||
| L | H | A | B | C | D | Stem size, square | |
| 241,8 | 157,5 | 119 | 118 | 112,3 | 26 | 22x22 | F07/F10 |
Device diagram of actuators DNOVA QT-N-EM-O1-220VAC-U1 HARK:
|
№ |
Name |
|
1 |
Position indicator |
|
2 |
Upper cover |
|
3 |
Control board |
|
4 |
Capacitor |
|
5 |
Actuating cam followers |
|
6 |
Output shaft with worm gear |
|
7 |
Body |
|
8 |
Output shaft travel limiters |
|
9 |
Worm shaft |
|
10 |
Electric motor |
|
11 |
Gearbox |
|
12 |
Gearbox cover |
- Body material
- cast iron QT450
- Maximum allowable temperature
- 150 °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 304
- 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