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
- Heat Supply
Butterfly valves are designed for use as shut-off or regulating valves for controlling flows in heat supply systems, water supply systems, in technological processes of food, chemical, oil and gas, pulp and paper and other industries. The valves are opened and closed by turning the disk by 90°. Opening is performed by turning the handle counterclockwise, closing - clockwise.
Pneumatic rotary actuators with return spring PA-SA are designed to automate the process of controlling industrial valves with maximum torque up to 2128 Nm.
Technical parameters of Water Butterfly Valve DNOVA WBV1616N-2W-Fb-H, body material - cast iron QT450, disk material - cast iron QT450, seal - NBR, pneumatic actuator PA-SA with return springs:
| Name | Significance |
| Nominal pressure PN, bar | 16 |
| Working medium temperature, °C | from -10 to +90 |
| Application | water supply, heat supply |
| Connection to pipeline | Interflange (threaded lugs) |
| Gate type | swivel disk |
| Control type | pneumatic actuator |
| Manufacturer's country | China |
Butterfly valves WBV1616N-2W-Fb-H, body material - cast iron QT450, disk material - cast iron QT450, seal - NBR, pneumatic actuator PA-SA with return springs
Dimensions and dimensions of butterfly valves DNOVA WBV1616N-2W-Fb-H, body material - cast iron QT450, disk material - cast iron QT450, seal - NBR, pneumatic actuator PA-SA with return springs:
| DN | H, mm | A, mm | E, mm |
| 50 | 203 | 216 | 109 |
| 65 | 224 | 279 | 134 |
| 80 | 248 | 279 | 134 |
| 100 | 277.5 | 308 | 157 |
| 125 | 317.5 | 405 | 174 |
| 150 | 354.5 | 465 | 199 |
Sketch Butterfly valves WBV1616N-2W-Fb-H, body material - cast iron QT450, disk material - cast iron QT450, seal - NBR, pneumatic actuator PA-SA with return springs
Materials of butterfly valves DNOVA WBV1616N-2W-Fb-H, body material - cast iron QT450, disk material - cast iron QT450, seal - NBR, pneumatic actuator PA-SA with return springs:
| № | Details | Material |
| 1 | Body | cast iron QT450 |
| 2 | Disk | cast iron QT450 |
| 3 | Seat seal | NBR |
| 4 | Rod | stainless steel SS 316 |
Sketch of parts and materials Butterfly valves WBV1616N-2W-Fb-H, body material - cast iron QT450, disk material - cast iron QT450, 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
- cast iron QT450
- Maximum allowable temperature
- 90 °C
- Connection type
- Interflange (threaded lugs)
- Control type
- Pneumatic actuator
- Operating environment
- Water, Oils, and Hydrocarbons
- Applications
- Water Supply and Heat Supply
- Nominal pressure
- 16 bar
- Type of seal
- NBR
- Disc material
- Cast iron QT450
- Manual override
- No
- Limit switches
- No
- Type of pneumatic actuator
- with return springs
- 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