Description
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 for automation of industrial valves control process with maximum torque up to 2128 Nm.
The limit switch unit is designed for visual and electrical signaling of the end positions of the valve shut-off body: valve, crane or disk gate. It is mounted on top of the pneumatic actuator surface and is connected to the actuator shaft in DIN standard. The sealed box usually contains two sensors, which monitor the position of the actuator shaft and signalize in extreme positions. OMRON microswitches, inductive sensors or reed switches are used as sensors. The visual indication of the position can be observed on the housing of the unit there is a 3D visual indicator RED-CLOSED and GREEN-OPEN.
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, LSU APL-210N:
| 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, LSU APL-210N
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, LSU APL-210N:
| 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, LSU APL-210N
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, LSU APL-210N:
| № | 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, LSU APL-210N
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
Technical parameters of limit switch unit APL-210N:
| Name | Value |
| Model of limit switch unit | APL-210N |
| Maximum voltage of limit switch, V | 250 |
| Working environment temperature, °C | -40 to +80 |
| Service life, years | 10 |
Limit switch unit APL-210N
Dimensions and dimensions of the APL-210N limit switch unit:
| Model | H, mm | L, mm | B, mm | D, mm | D1, mm | M |
| APL-210N | 77 | 112 | 88 | 10 | 5 | 20x1.5 |
Sketch of dimensions and dimensions of limit switch unit APL-210N
Specifications
Delivery
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