How it works
Spring-return rotary 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
- Oils
- Hydrocarbons
- Water Supply
- Heating
- Chemical Industry
- Oil And Gas Industry
- Food Industry
Butterfly valves are designed for use as shut-off or regulating valves to control 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.
PA-DA double-acting pneumatic rotary actuators and PA-SA double-acting pneumatic rotary actuators with return spring are designed to automate the process of controlling industrial valves with maximum torque up to 2128 Nm.
Technical parameters of Water Butterfly Valve DNOVA WBV3131N-2W-Fb-H, body material - Stainless steel AISI 304, disk material - Stainless steel AISI 304, seal - NBR, pneumatic actuator PA-SA with return springs:
| Characteristic | Meaning |
| Gate type | rotary disk |
| Diameter | 50-150 mm |
| Nominal pressure | 16 bar |
| Working medium temperature | -10 to +900°C |
| Application | water supply, heat supply, chemical industry, oil and gas industry, food industry, pulp and paper industry |
| Connection type | interflange |
| Control type | pneumatic actuator |
| Sealing class | A |
| Manufacturer's country | China |
| Service life | 10 years |
| Warranty | 12 months. |
Butterfly valves WBV3131N-2W-Fb-H, body material - Stainless steel AISI 304, disk material - Stainless steel AISI 304, seal - NBR, pneumatic actuator PA-SA with return springs
Dimensions and dimensions of butterfly valves DNOVA WBV3131N-2W-Fb-H, body material - Stainless steel AISI 304, disk material - Stainless steel AISI 304, seal - NBR, pneumatic actuator PA-SA with return springs:
| 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 |
Sketch Butterfly valves WBV3131N-2W-Fb-H, body material - Stainless steel AISI 304, disk material - Stainless steel AISI 304, seal - NBR, pneumatic actuator PA-SA with return springs
Materials of butterfly valves DNOVA WBV3131N-2W-Fb-H, body material - Stainless steel AISI 304, disk material - Stainless steel AISI 304, seal - NBR, pneumatic actuator PA-SA with return springs:
| № | Part name | Material |
| 1 | Body | stainless steel 304 |
| 2 | Disk | stainless steel 304 |
| 3 | Seat seal | NBR |
| 4 | Stem | stainless steel SS 416 |
| 5 | Handle | carbon steel |
Sketch of parts and materials Butterfly valves WBV3131N-2W-Fb-H, body material - Stainless steel AISI 304, disk material - Stainless steel AISI 304, seal - NBR, pneumatic actuator PA-SA with return springs
Technical data of PA-SA pneumatic actuators
| Design | with return springs |
| Nominal pressure PN, bar | 12 |
| Working pressure, bar | 2...8 |
| Working medium | Filtered compressed air or non-aggressive gases, oils |
| Maximum particle diameter | less than 30 µm2 |
| Operating temperature t, °C | - 20 to +80 - 40 to +80 (low temperature version) - 20 to +160 (in dry air) |
| Adjustment range | ± 5 ° for rotation at 0 ° and 90 ° |
| Manual override | is |
| Position indicator | open/closed |
| Operating environment | indoors and outdoors. (All internal and external parts are anti-corrosion coated) |
Materials of PA-SA pneumatic actuator parts:
| № | Name | Material |
| 1 | Enclosure | extruded aluminum |
| 2 | Side plugs | 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 housing | plastic |
| 17 | Bearing | engineering plastic |
| 18 | Cam | steel |
| 19 | Bearing | NBR |
| 20 | Bearing | engineering plastic |
| 21 | Bearing | engineering plastic |
| 22 | Sealing ring | NBR |
| 23 | Sealing ring | NBR |
| 24 | Bearing | stainless steel |
| 25 | Adjustment nut | stainless steel |
| 26 | Adjustment screw | stainless steel |
| 27 | Sleeve | aluminum |
Material sketch of PA-SA pneumatic actuator
- Body material
- Stainless steel AISI 304
- Maximum allowable temperature
- 90 °C
- Connection type
- Compact flanged
- Control type
- Pneumatic actuator
- Operating environment
- Water, Oils, and Hydrocarbons
- Applications
- Water Supply, Heating, Chemical Industry, Oil And Gas Industry, Food Industry, and Pulp And Paper Industry
- Nominal pressure
- 16 bar
- Type of seal
- NBR
- Disc material
- Stainless steel AISI 304
- Manual override
- No
- Limit switches
- No
- Type of pneumatic actuator
- with return springs
- 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