3 in Butterfly Valve
The size specification of 3 inch butterfly valve is DN80, that is, the diameter is 80mm (3 inches), while its dimensions such as length, width and thickness will vary depending on the manufacturer.
In addition, 3″ butterfly valves can also have different models sorted by different materials and operation methods.
As a commonly used fluid control device, this valve has a wide range of application scenarios and advantages in practical applications. Having an through understanding of its specifications and application characteristics, we can better select suitable valves to meet the engineering requirements.
Outlines of 3 in butterfly valve:
- Compact structure: it realizes opening and closing by rotating the disc plate at an angle of 90°. Therefore, it has a compact structure and a small volume, making it convenient for installation and maintenance.
- Easy to operate: the operation of this valve is simple and quick. Opening and closing pipeline can be achieved just by rotating a handle or an electric actuator.
- Good sealing performance: the sealing surface is made of soft materials such as rubber or polytetrafluoroethylene, which has good sealing performance and can effectively prevent the leakage of the medium.
- Strong corrosion resistance: the valve body and valve seat are usually made of corrosion-resistant materials such as stainless steel or cast iron, and can adapt to various complex medium environments.
Main parts Material
| No | Part | Material |
| 1 | Body | GGG50 / ASTM A126 B |
| 2 | Seal Ring | EPDM / NBR |
| 3 | Pin | ASTM A276 304 |
| 4 | Disc | ASTM A351 CF8 |
| 5 | Stem | ASTM A276 420 |
| 6 | Stem Packing | EPDM |
| 7 | Bolt | ASTM A193 B8 |
| 8 | Nut | ASTM A194 8 |
Dimensions & Weight
| Pressure Rating | Face to Face Dimension(in mm) | Weight | ||
| RF | WAFER | LUG | kg | |
| CLASS 150 | 114 | 46 | 46 | 8 |
The data is for reference only, please consult sales@wayvalve.com for details.
The 3 butterfly valve are widely used in various pipeline systems, include:
Municipal Water Supply System: due to its compact structure and easy operation, this valve plays an important role in the municipal water supply system, which can effectively prevent the waste and pollution of water resources.
Sewage Treatment System: during the sewage treatment process, the 3 in butterfly valve is used to control the flow rate and direction of sewage. It has good corrosion resistance and sealing performance, ensuring the stable operation of the system.
Industrial Pipeline System: In industries such as petroleum, chemical engineering, and electric power, this valve is used to control the flow rate and pressure of various fluid media, guaranteeing the normal operation of the production process.
What size bolts for a 3 butterfly valve?
The size of bolts for a 3 inch butterfly valve typically depends on the valve’s pressure rating and the flange type. For a standard low-pressure butterfly valve, common bolt sizes might be 3/8 inch or 1/2 inch diameter. For higher-pressure applications, 5/8 inch or even larger bolts could be required. It’s crucial to refer to the valve manufacturer’s specifications to ensure the correct bolt size is used for proper installation and safety.
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