How it works
Double-acting rotary actuator
Butterfly disc
Limit-switch box
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
Butterfly valve DNOVA is 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.
Pneumatic actuators DA are designed to automate the process of controlling industrial shut-off valves - gates, ball valves. DNOVA pneumatic actuators are designed for operation both indoors and outdoors. All internal and external parts are anticorrosive coated.
DNOVA APL-510N-EX limit switch unit is an electrotechnical device designed to open and close the working circuit and to visualize the positions of the shut-off body of pipeline valves. In a sealed box, as a rule, there are two mechanical switches designed for voltage up to 250 V, which monitor the position of the actuator stem and signalize in extreme positions. They are mounted on top of the actuator surface. In the upper part of the limit switch unit there is a two-color visual indicator hemisphere. If the connected pipe fitting is closed, only the red part of the hemisphere labeled CLOSED is visible; if it is open, only the yellow part labeled OPEN is visible. This visual indicator is clearly visible from a distance, which simplifies the inspection of the equipment, and the color difference between the open and closed position reduces the probability of misinterpretation of information. Thanks to the use of BCV it Weightomes possible to transmit information about the position of pipeline valves (open/closed) to automated control systems, which increases the reliability of the system as a whole and simplifies diagnostics in case of fault detection.
Technical parameters of water butterfly valve DNOVA WBV0232E-2W-Fb body material - Aluminum alloy AL-316L, disk material - Stainless steel aisi 316l, seal - EPDM with double-acting pneumatic actuator DA and limit switch block APL-510N-EX:
| Parameter | Value |
| Nominal diameter DN, mm | 25-32 |
| Working pressure PN, bar | 16 |
| Operating medium temperature t, °C | from -20 to +120 |
| Operating medium | cold and hot water, air without oil and grease, other media neutral to the material |
| Flow direction | two-way |
| Body material | aluminum alloy |
| Control type | manual (handle) |
| Optional | electric or pneumatic actuator possible (ISO 5211-2001) |
Materials of water butterfly valve DNOVA WBV0232E-2W-Fb body material - Aluminum alloy AL-316L, disk material - Stainless steel aisi 316l, seal - EPDM with double-acting pneumatic actuator DA and limit switch block APL-510N-EX:
|
No. |
Part Name |
Material |
|
1 |
Body |
Aluminum alloy |
|
2 |
Seat seal |
EPDM |
|
3 |
Pin |
Stainless steel SS304 |
|
4 |
Disc |
Stainless steel 316L |
|
5 |
Stem |
Stainless steel SS410 |
|
6 |
Sealing ring |
EPDM |
|
7 |
Plate |
Steel |
|
8 |
Handle |
Malleable iron |
|
9 |
Bolt |
Stainless steel SS201 |
|
10 |
Gasket |
Stainless steel SS201 |
|
11 |
Nut |
Stainless steel SS201 |
|
12 |
Gasket |
Stainless steel SS201 |
Overall and installation dimensions of water butterfly valve DNOVA WBV0232E-2W-Fb body material - Aluminum alloy AL-316L, disk material - Stainless steel aisi 316l, seal - EPDM with double-acting pneumatic actuator DA and limit switch block APL-510N-EX:
| DN | A | C | K | L1 | E |
| 25 | 93 | 89 | 121.4 | 174 | 36 |
| 32 | 93 | 89 | 121.4 | 174 | 36 |
Technical characteristics of DA pneumatic actuators:
| Design | Double-acting | |
| Nominal pressure PN, bar | 12 | |
| Operating pressure, bar | 2…8 | |
| Operating medium | Filtered compressed air or non-aggressive gases, oils | |
| Maximum particle diameter | less than 30 µm2 | |
| Operating temperature t, °C | • from -20 to +80 • from -40 to +80 (low-temperature version) • from -20 to +160 (in dry air) |
|
| Adjustment range | ± 5° for rotation at 0° and 90° | |
| Manual duplication | yes | |
| Position indicator | open/closed | |
| Operating environment | indoors and outdoors. (All internal and external parts have an anti-corrosion coating) | |
Pneumatic actuator component materials DNOVA DA:
| № | Name | Material |
| 1 | Body | extruded aluminum |
| 2 | Side caps | cast aluminum |
| 3 | Gear | stainless steel |
| 4 | Piston | steel/aluminum |
| 5 | Plugs | stainless steel |
| 6 | Piston ring | NBR |
| 7 | Springs | spring steel |
| 8 | Piston bearing | engineering plastic |
| 9 | Piston ring | NBR |
| 10 | Plug | NBR |
| 11 | Thrust ring | engineering plastic |
| 12 | Ring | engineering plastic |
| 13 | Washer | stainless steel |
| 14 | Spring clip | stainless steel |
| 15 | Indicator | plastic |
| 16 | Indicator body | plastic |
| 17 | Bearing | engineering plastic |
| 18 | Cam | steel |
| 19 | Bearing | NBR |
| 20 | Bearing | engineering plastic |
| 21 | Bearing | engineering plastic |
| 22 | O-ring | NBR |
| 23 | O-ring | NBR |
| 24 | Bearing | stainless steel |
| 25 | Adjustment nut | stainless steel |
| 26 | Adjustment screw | stainless steel |
| 27 | Bushing | aluminum |
Characteristics of limit switch unit APL-510N-EX:
| Parameter | Value |
| Body | weatherproof IP67/ NEMA4 4X,7,9 explosion-proof E EX d IIC T6 |
| Compatible devices | - quarter-turn pneumatic actuators; - any actuators with a 90° shaft rotation |
| Full swivel angle | 90° |
| Cable glands | 2 x NPT 3/4” |
| Electrical connection | Screw terminal clamps, 8 points (0.08 – 2.5 mm²) |
| Cable entry thread | 2 x NPT 3/4” |
| Type of visual indicator | two-color hemisphere: OPEN (Open) - yellow CLOSED (Closed) - red |
| Switches/sensors | two mechanical switches two proximity sensors |
| Nominal voltage, V | 250 |
| Nominal current, A | 16 |
| Permissible ambient temperature, °C | from -20 to +66 |
| Average life, cycles | 10 000 000 |
| Weight, kg | 1.8 |
- Body material
- Aluminium alloy
- Maximum allowable temperature
- 120 °C
- Connection type
- Compact flanged
- Control type
- Pneumatic actuator
- Nominal pressure
- 16 bar
- Type of seal
- EPDM
- Disc material
- Stainless steel AISI 316L/1.4404
- Valve feedback
- Limit switches
- Explosion-proof
- Yes
- Torque
- 25 Nm
- Pneumatic actuator
- No
- Manual override
- No
- Limit switches
- Yes
- 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