Parts
How it works
Double-acting rotary actuator
Butterfly disc
5/2 single-solenoid pilot
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
A water butterfly valve is a type of valve used to control the flow of water or other fluids through a pipeline. It gets its name from the butterfly-shaped disc inside the valve that rotates to open or close the flow. When the valve is fully open, the disc is positioned parallel to the flow direction, allowing unobstructed passage of water. When the valve is closed, the disc is turned perpendicular to the flow, effectively blocking the flow of water. Water butterfly valves are commonly used in various industries and applications, including water treatment plants, sewage systems, irrigation systems, and industrial processes. They are known for their compact design, lightweight construction, and ease of installation. These valves are often preferred for their quick operation, as the disc can be opened or closed with a simple quarter-turn motion. Butterfly valves can be operated manually with a handle or lever, or they can be automated using electric, pneumatic, or hydraulic actuators to control the valve remotely. They are known for their low-pressure drop and relatively low cost compared to other types of valves. It's worth noting that water butterfly valves are specifically designed for use with water and compatible fluids. Different materials and designs may be required for valves intended for use with corrosive or high-pressure fluids. It's important to select the appropriate type of butterfly valve based on the specific application and fluid requirements.
DNOVA pneumatic actuators are designed for automation of industrial valve control process with maximum torque up to 2128 Nm. Pneumatic actuators can be mounted on various quarter-turn valves according to the instructions. The flanges must comply with iso 5211.
Pneumatic actuators are used for control in pneumatic systems with NAMUR docking surface, to install the actuators through through holes in the body.
The limit switch unit is designed for visual and electrical signalling of the valve end positions. It is mounted on top of the pneumatic actuator surface and connected to the actuator shaft - DIN standard. The sealed box usually contains two sensors which monitor the position of the actuator shaft and signalise the end positions. The visual indication of the position can be seen on the housing of the unit there is a 3D visual indicator RED-CLOSED and GREEN-OPEN.
The HDM worm gear manual doubleturn actuator with reduction gearbox allows manual setting of the required positioning of the shut-off valve by a quarter turn, acting as an alternative to pneumatic, electric or hydraulic quarter-turn actuators. Suitable for both indoor and outdoor installation. The modular design of the manual override is intended to provide the most efficient and effective solution to the full range of manual override applications.
Basic parameters of gates:
| Nominal diameter DN, mm | 50 – 300 |
| Nominal pressure PN, MPa (kg/cm2) | 1.6 (16) |
| Direction of flow | bilateral |
| Ambient temperature t, °C | From -20 to +200: for VITON |
| Working environment | VITON: mineral and vegetable oils, animal fats, plastic lubricants and fuel, hot air, steam |
| Connection to the pipeline | interflange |
Basic parameters of pneumatic actuators:
| Nominal pressure PN, MPa (kg/cm2) | 1,2 (12) |
| Working pressure, bar | 2...8 |
| Working environment | Filtered compressed air or non-aggressive gases, oils |
| Maximum particle diameter | Less than 30 µm2 |
| Operating temperature, °C | from -20 to +80 |
| from -40 to +80 (low temperature version) | |
| from -20 to +160 (in dry air) | |
| Adjustment range | ±5° for rotation at 0° and 90° |
| Manual duplication | There is |
| Position indicator | open/closed |
| Operating environment | indoors and outdoors (all internal and external parts have anti-corrosion coating) |
Technical characteristics of the pneumatic distributor 4M310-08 NAMUR
| Design | Spool-type |
| Test pressure (body strength test. Not for operation!), bar | 10 |
| Working pressure (recommended range for normal operation), bar | 1.5 ÷ 8 |
| Valve type | 5/2 five-port, two-position |
| Working medium | purified air (40 µm filter fineness) |
| Operating temperature, °C | 0 to +60 |
| Actuation frequency | 5 cycles per second |
| Manual override | yes |
| Protection rating/insulation class | IP65/F |
| Connection to pneumatic actuator | NAMUR-compliant mounting surface (VDI/VDE3845) |
| Body material | anodized aluminum |
| Effective cross-sectional area, mm2 | 25 (Cv = 1.4) |
| Exhaust port dimensions (vent to atmosphere) | 2 - PT1/4” |
| Air inlet port size (to pneumatic valve) | G1/4” |
| Air outlet port size (to pneumatic actuator) | 2 x Ø19.2 mm |
| Response time, sec | 0.05 |
| Supply voltage, V | 220AC/24DC |
| Coil power | 220VAC – 5.5 VA/24VDC – 4.8 W |
| Weight, kg | 0.35 |
| Average service life, cycles | 10,000,000 |
Overall and installation dimensions of the pneumatic distributor 4M310-08 NAMUR
| A | C | D | E | F | G | H | I | K | L | J | N | M |
| mm | ||||||||||||
| 40 | 24 | 28 | 32 | 40 | 21,5 | 69 | 45 | 17,5 | 135 | 29,3 | 40 | 27 |
Sketch of the dimensions of the pneumatic distributor 4M310-08 NAMUR
Basic materials and parts of the pneumatic distributor 4M310-08 NAMUR
| № | Part Name | Material |
| 1 | Connector | Engineering plastic |
| 2 | Nut | POM + carbon steel |
| 3 | Coil | Copper |
| 4 | Control Elements | — |
| 5 | Plate | Carbon steel |
| 6 | Piston | POM |
| 7 | Control Valve Seat | Engineering plastic |
| 8 | Valve Body | Aluminum alloy |
| 9 | Spool | Aluminum alloy |
| 10 | O-Ring Seal | HNBR |
| 11 | Rear Cover | Engineering plastic |
| 12 | Filter | Synthetic material |
| 13 | Piston | POM |
| 14 | Spring | Stainless steel |
| 15 | Manual Override | Engineering plastic |
| 16 | Rear Seat | Aluminum alloy |
| 17 | Spring Seat | Aluminum alloy |
| 18 | Type C Towing Shackle | 65Mn |
Sketch of the dimensions of the pneumatic distributor 4M310-08 NAMUR
Basic parameters of the limit switch unit:
| Meaning | Execution | Option |
|---|---|---|
| Maximum current | 5 A | - |
| Maximum voltage | 250 V | - |
| Explosion protection | No | - |
| Protection | All-weather IP65 | IP67 |
| Ambient temperature | From -40°C to +80°C | From -50°C to +80°C |
| Cable entry thread | 2 x NPT1/2” | PF1/2′′, P1/2′′M20x15, PG13.5 |
| Terminal block | 8 cells 0.08-2.6mm2 | - |
| Indicator position | CLOSED: red OPEN: green | CLOSED: red OPEN: yellow |
| Sensor | 2 SPDT Electromechanical Microswitches OMRON V151-1C25 | 2 NPN inductive sensors, 2 NAMUR proximity switches |
| External coating | Polyester coating (black) | red, green, yellow, blue |
| Shaft | Standard shaft (17mm) | Extended shaft |
Materials of parts of the limit switch unit:
| Frame | Cast aluminum |
| Indicator cap | Polyester plastic |
| 3D indicator | ABC plastic |
| Cam | Polyester plastic |
| Spring | Stainless steel |
| Screws | Stainless steel |
| Sealing rings | NBR |
| Sleeve | Bronze |
| Ground terminal | Stainless steel |
| Shaft | Stainless steel |
- Body material
- Carbon steel
- Maximum allowable temperature
- 200 °C
- Connection type
- Compact flanged
- Control type
- Pneumatic actuator
- Nominal pressure
- 16 bar
- Type of seal
- Viton
- Disc material
- Stainless steel AISI 316L/1.4404
- Voltage
- 110/220V
- Valve feedback
- Limit switches
- Explosion-proof
- No
- Torque
- 350 Nm
- Pneumatic actuator
- Yes
- Manual override
- Yes
- Limit switches
- Yes
- 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.