Description
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, ⁰C | - 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
Specifications
Delivery
The cost and delivery time for your order depend on several factors, including the specific product you are ordering, the quantity, and the country of destination. Each product may have different manufacturing lead times and shipping requirements, which can affect the overall delivery schedule.
To get the most accurate and up-to-date information on delivery costs and timelines, we recommend contacting our sales managers. They will be happy to provide you with a detailed quote and estimated delivery time based on your specific requirements.
Please feel free to reach out to us for any questions or further assistance regarding your order.