
How it works
Spring-return rotary actuator
Butterfly disc
5/2 single-solenoid pilot
The number that matters
Nominal pressure
10bar
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
- Steam
- Neutral Media
- Food Industry
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. Operating principle: The valves are opened and closed by turning the disk by 90°. Opening is performed by turning the handle counterclockwise, closing - clockwise.
Pneumatic DNOVA pneumatic double-acting rotary actuators PA-DA-XXX and pneumatic rotary actuators with return spring PA-SA-XXX are designed for automation of industrial valves control process with maximum torque up to 2128 Nm.
Pneumatic valves are used for control in pneumatic systems with NAMUR docking surface, for installation of valves through holes in the body. Electromagnetic control, is realized by means of voltage coils 12-AC, 12-DC, 24-AC, 24-DC, 110-AC, 220-AC. Depending on the model, the valves have one-way or two-way control. Solenoid operated pneumatic valves have a wide range of models and include common switching types for three (3/2) and five (5/2 and 5/3) line pneumatic valves. They are designed for use with quarter-turn pneumatic actuators.
Technical characteristics of butterfly valves DNOVA WBV3131E-2W-C-H food grade stainless steel 304, seal - EPDM, with pneumatic actuator DNOVA PA-SA-XXX and pneumatic distributor DNOVA 4M310-08 24V:
|
Characteristic |
Value |
|
Type of valve |
Rotary disc |
|
Diameter |
15–100 mm |
|
Nominal pressure |
10 bar |
|
Working medium temperature |
From -20 to +135°C |
|
Application |
Food industry |
|
Type of connection |
Clamp |
|
Type of control |
Pneumatic actuator |
|
Tightness class |
A |
|
Warranty |
12 months |
Technical data of pneumatic rotary actuators with return springs DNOVA PA-SA-XXX:
|
Characteristic |
Value |
|
Type of pneumatic actuator |
With return springs |
|
Actuator torque |
14–30 Nm |
|
Nominal pressure |
12 bar |
|
Operating pressure |
2...8 bar |
|
Maximum particle diameter |
Less than 30 µm² |
|
Working medium |
Filtered compressed air or non-aggressive gases, oils |
|
Adjustment range |
±5° for rotation at 0° and 90° |
|
Air supply |
G1/4" |
|
Working medium temperature |
From -20 to +80 °C |

Technical characteristics of pneumatic valves DNOVA 4M310-08 24V:
| Characteristics | Value |
| Model of pneumatic valve | 4M310-08 24V |
| Supply voltage | 24V |
| Construction | Spool type |
| Nominal pressure | 12 bar |
| Working pressure | 1.5...8 bar |
| Ambient temperature | From +5 to +50 °C |
| Working medium | Filtered compressed air |
| Response frequency | 5 cycles/s |
| Degree of protection | IP65 |
| Fastening | Through holes in the housing |
| Body material | Anodized aluminum |
| Response time | 0.05 sec. |

Overall and installation sizes of butterfly valves DNOVA WBV3131E-2W-C-H food grade stainless steel 304, seal - EPDM, with pneumatic actuator DNOVA PA-SA-XXX and pneumatic distributor DNOVA 4M310-08 24V:
| Diameter | D, mm | D1, mm | A, mm | H, mm | J, mm | K, mm |
| DN15 | 34 | 78 | 66 | 86 | 126 | 8x8 |
| DN20 | 34 | 78 | 66 | 86 | 126 | 8x8 |
| DN25 | 50.5 | 78 | 66 | 86 | 126 | 8x8 |
| DN32 | 50.5 | 86 | 66 | 90 | 126 | 8x8 |
| DN40 | 50.5 | 90 | 70 | 92 | 126 | 8x8 |
| DN50 | 64 | 106 | 76 | 104 | 133 | 10x10 |
| DN65 | 91 | 124 | 80 | 113 | 144 | 10x10 |
| DN80 | 106 | 139 | 84 | 123.5 | 160 | 10x10 |
| DN100 | 119 | 159 | 104 | 133.5 | 160 | 10x10 |

Dimensions and mounting sizes of rotary pneumatic actuators DNOVA with return springs PA-SA-XXX:
| Model | A, mm | B, mm | C, mm | D, mm | E, mm | F, mm | G, mm | M, mm | N, mm | O, mm | P, mm |
| PA-DA(SA)-052 | 108 | 153 | 30 | 41 | 72 | 26 | 15 | 80 | 30 | 34 | 20 |
| PA-DA(SA)-065 | 125 | 174 | 36 | 46 | 89 | 26 | 15 | 80 | 30 | 34 | 20 |
| PA-DA(SA)-083 | 152 | 216 | 46 | 55 | 109 | 26 | 15 | 80 | 30 | 34 | 20 |
| PA-DA(SA)-105 | 189 | 279 | 55 | 64 | 134 | 26 | 25 | 80 | 30 | 41 | 20 |
| PA-DA(SA)-130 | 210 | 308 | 67.5 | 70 | 157 | 36 | 25 | 80 | 30 | 62 | 30 |
| PA-DA(SA)-140 | 268 | 405 | 76 | 77 | 174 | 36 | 30 | 130 | 30 | 62 | 30 |
| PA-DA(SA)-160 | 310 | 465 | 87.5 | 87.5 | 199 | 38 | 30 | 130 | 30 | 62 | 30 |
| PA-DA(SA)-210 | 390 | 542 | 113 | 113 | 257 | 38 | 40 | 130 | 30 | 79 | 30 |
| PA-DA(SA)-270 | 510 | 722 | 146 | 146 | 333 | 38 | 52 | 130 | 30 | 79 | 30 |

Overall and installation sizes of pneumatic valves DNOVA 4M310-08 24V:
| Depth, mm | 27 |
| Height, mm | 69 |
| Width, mm | 134.5 |

Materials of butterfly valves DNOVA WBV3131E-2W-C-H food grade stainless steel 304, seal - EPDM, with pneumatic actuator DNOVA PA-SA-XXX and pneumatic distributor DNOVA 4M310-08 24V:
|
№ |
Part name |
Material |
|
1 |
Body |
Stainless steel 304 |
|
2 |
Swivel unit |
Stainless steel 304 |
|
3 |
Disc |
Stainless steel 304 |
|
4 |
Seat seal |
EPDM |
|
5 |
Nut |
Steel A2~70 |
|
6 |
Bolt |
Steel A2~70 |
|
7 |
Plug |
Plastic ABS |

Construction of rotary pneumatic actuators DNOVA with return springs PA-SA-XXX:
|
№ |
Name |
Quantity |
Material |
|
1 |
Body |
1 |
Extruded aluminum (hard anodized coating) |
|
2 |
Side plugs |
2 |
Cast aluminum |
|
3 |
Gear |
1 |
Stainless steel (nickel plated) |
|
4 |
Piston |
2 |
Steel/aluminum (oxidized/galvanized) |
|
5 |
Plugs |
8 |
Stainless steel |
|
6 |
Piston ring |
2 |
NBR |
|
7 |
Springs |
0–12 |
Spring steel (epoxy coated) |
|
8 |
Piston bearing |
2 |
Engineering plastic |
|
9 |
Piston ring |
2 |
NBR |
|
10 |
Plug |
2 |
NBR |
|
11 |
Thrust ring |
2 |
Engineering plastic |
|
12 |
Ring |
1 |
Engineering plastic |
|
13 |
Washer |
1 |
Stainless steel |
|
14 |
Spring clip |
2 |
Stainless steel |
|
15 |
Indicator |
1 |
Plastic |
|
16 |
Indicator body |
1 |
Plastic |
|
17 |
Bearing |
1 |
Engineering plastic |
|
18 |
Cam |
1 |
Steel (oxidized/galvanized) |
|
19 |
Bearing |
1 |
NBR |
|
20 |
Bearing |
1 |
Engineering plastic |
|
21 |
Bearing |
1 |
Engineering plastic |
|
22 |
Sealing ring |
2 |
NBR |
|
23 |
Sealing ring |
2 |
NBR |
|
24 |
Bearing |
2 |
Stainless steel |
|
25 |
Adjustment nut |
2 |
Stainless steel |
|
26 |
Adjustment screw |
2 |
Stainless steel |
|
27 |
Bushing |
2 |
Aluminum |

- Body material
- Stainless steel AISI 304
- Maximum allowable temperature
- 135 °C
- Connection type
- Clamp
- Control type
- Pneumatic actuator
- Operating environment
- Water, Steam, and Neutral Media
- Applications
- Food Industry
- Nominal pressure
- 10 bar
- Type of seal
- EPDM
- Disc material
- Stainless steel AISI 304
- Voltage
- 24 V
- 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