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 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.
PA-DA double-acting pneumatic rotary actuators are designed to automate the process of controlling industrial valves 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 WBV1631N-2W-Fb-H, body material - cast iron QT450, disk material - stainless steel AISI 304, seal - NBR, with pneumatic actuator double action PA-DA, LSU APL-210N:
| Nominal diameter DN, mm | 50-150 |
| Nominal pressure PN, bar | 16 |
| Working medium temperature t, °C | NBR - -10 to +90 EPDM - -20 to +150 |
| Working medium | NBR - water, mineral oils, hydrocarbons, oils, fats EPDM - cold and hot water, air without oil and grease impurities, other media. oil and grease impurities, other environments material neutral |
| Flow direction | double-sided |
| Connection to pipeline | interflanged |
| Body material | cast iron QT450 |
| Disk material | cast iron QT450 / stainless steel 304 |
| Seal material | NBR / EPDM |
| Service life, years | 10 |
Butterfly valves WBV1631N-2W-Fb-H, body material - cast iron QT450, disk material - stainless steel AISI 304, seal - NBR, with pneumatic actuator double action PA-DA, LSU APL-210N
Dimensions and dimensions of butterfly valves DNOVA WBV1631N-2W-Fb-H, body material - cast iron QT450, disk material - stainless steel AISI 304, seal - NBR, with pneumatic actuator double action PA-DA, LSU APL-210N:
| DN | H, mm | A, mm | E, mm |
| 50 | 203 | 174 | 89 |
| 65 | 224 | 174 | 89 |
| 80 | 248 | 216 | 109 |
| 100 | 277.5 | 216 | 109 |
| 125 | 317.5 | 279 | 134 |
| 150 | 354.5 | 279 | 134 |
Sketch Butterfly valves WBV1631N-2W-Fb-H, body material - cast iron QT450, disk material - stainless steel AISI 304, seal - NBR, with pneumatic actuator double action PA-DA, LSU APL-210N
Materials of butterfly valves DNOVA WBV1631N-2W-Fb-H, body material - cast iron QT450, disk material - stainless steel AISI 304, seal - NBR, with pneumatic actuator double action PA-DA, LSU APL-210N:
| № | Details | Material |
| 1 | Body | cast iron QT450 |
| 2 | Disk | stainless steel AISI 304 |
| 3 | Seat seal | NBR |
| 4 | Rod | stainless steel SS 316 |
Sketch of parts and materials Butterfly valves WBV1631N-2W-Fb-H, body material - cast iron QT450, disk material - stainless steel AISI 304, seal - NBR, with pneumatic actuator double action PA-DA, LSU APL-210N
Technical data of PA-DA pneumatic actuators:
| Design | Double action |
| 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) |
PA-DA pneumatic actuator
PA-DA pneumatic actuator component materials:
| № | 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 |
Parts and material sketch of the PA-DA 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
- Body material
- cast iron QT450
- Maximum allowable temperature
- 90 °C
- Connection type
- Compact flanged
- Control type
- Pneumatic actuator
- Nominal pressure
- 16 bar
- Type of seal
- NBR
- Disc material
- Stainless steel AISI 304
- Explosion-proof
- No
- Torque
- 24.2 Nm
- Manual override
- No
- Limit switches
- Yes
- Feedback sensor
- Limit switches
- Type of pneumatic actuator
- double action
- 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