DN80 metal expansion joint
DN80
The DN80 Metal Expansion Joint is a high-performance flexible component designed to compensate for thermal expansion, contraction, vibration, and other movements in pipeline systems. With a nominal diameter of DN80 (3 inches), this expansion joint is widely used in hot and cold water systems, compressed air, steam, superheated steam, and hot oil applications.
Delivery
FOB
minimum order
1 piece
Supply Ability
30piece / Month
Country of Origin
CHINA
Stock Time
20-25Day
Quantity:
US $60.00 - US $10000.00
/ piece
# DN80 Metal Expansion Joint Product Introduction
## Key Specifications
The DN80 Metal Expansion Joint features a nominal diameter of DN80 and a pressure rating of PN 16 (16 bar). It is capable of operating within a working temperature range of -80°C to +420°C. Connection types available include flanged connections, rotary flanged connections, and welding neck connections. The bellows are manufactured from stainless steel materials such as AISI 304, 321, and 316L, while flange materials can be selected from AISI 304, 321, or carbon steel.
## Dimensional Data
For the DN80 size, the overall length typically ranges from 120mm to 180mm, depending on the required axial movement capacity. The flange outer diameter measures 200mm, with a pitch circle diameter of 160mm. The flange is equipped with 8 bolt holes, each with an 18mm diameter. It should be noted that the length varies according to the specific axial movement requirement, with options available for 30mm, 45mm, or 60mm expansion capability.
## Design Features
This expansion joint incorporates high-quality stainless steel bellows that provide excellent corrosion resistance and high-temperature performance. The multi-ply construction offers enhanced flexibility and fatigue resistance, ensuring a long service life even under demanding operating conditions. Flanged or welding neck connections are available to suit various installation requirements. The design effectively compensates for axial, lateral, and angular movements while also providing vibration absorption and noise reduction to protect connected equipment.
## Performance Characteristics
The DN80 metal expansion joint effectively compensates for thermal expansion and contraction of pipelines, vibration from pumps, compressors, and other rotating machinery, misalignment during installation or due to foundation settlement, as well as bending and angular movements. This comprehensive compensation capability ensures the safe and stable operation of the entire piping system.
## Materials of Construction
The bellows are manufactured from austenitic stainless steel grades including AISI 304, 304L, 316, 316L, and 321. These materials offer excellent resistance to corrosion and high-temperature oxidation, ensuring long service life in demanding applications across various industries.
## Available Options
The DN80 Metal Expansion Joint can be supplied with limiting rods for travel limitation and additional safety protection. For high-pressure applications, an external pressured design is available. The standard configuration is offered without a liner, and customized dimensions can be provided upon request to meet specific project requirements.
## Applications
This expansion joint is widely used in HVAC and chilled water systems, steam and superheated steam piping, compressed air systems, hot oil transfer lines, petrochemical and refinery pipelines, as well as power generation facilities. Its versatility makes it an ideal choice for a broad range of industrial and commercial applications.
## Standards Compliance
The DN80 Metal Expansion Joint is manufactured and tested in accordance with EJMA (Expansion Joint Manufacturers Association) standards, ASME VIII, Division I, Appendix 26, and EN 14917, ensuring reliable performance and quality assurance.
## Key Specifications
The DN80 Metal Expansion Joint features a nominal diameter of DN80 and a pressure rating of PN 16 (16 bar). It is capable of operating within a working temperature range of -80°C to +420°C. Connection types available include flanged connections, rotary flanged connections, and welding neck connections. The bellows are manufactured from stainless steel materials such as AISI 304, 321, and 316L, while flange materials can be selected from AISI 304, 321, or carbon steel.
## Dimensional Data
For the DN80 size, the overall length typically ranges from 120mm to 180mm, depending on the required axial movement capacity. The flange outer diameter measures 200mm, with a pitch circle diameter of 160mm. The flange is equipped with 8 bolt holes, each with an 18mm diameter. It should be noted that the length varies according to the specific axial movement requirement, with options available for 30mm, 45mm, or 60mm expansion capability.
## Design Features
This expansion joint incorporates high-quality stainless steel bellows that provide excellent corrosion resistance and high-temperature performance. The multi-ply construction offers enhanced flexibility and fatigue resistance, ensuring a long service life even under demanding operating conditions. Flanged or welding neck connections are available to suit various installation requirements. The design effectively compensates for axial, lateral, and angular movements while also providing vibration absorption and noise reduction to protect connected equipment.
## Performance Characteristics
The DN80 metal expansion joint effectively compensates for thermal expansion and contraction of pipelines, vibration from pumps, compressors, and other rotating machinery, misalignment during installation or due to foundation settlement, as well as bending and angular movements. This comprehensive compensation capability ensures the safe and stable operation of the entire piping system.
## Materials of Construction
The bellows are manufactured from austenitic stainless steel grades including AISI 304, 304L, 316, 316L, and 321. These materials offer excellent resistance to corrosion and high-temperature oxidation, ensuring long service life in demanding applications across various industries.
## Available Options
The DN80 Metal Expansion Joint can be supplied with limiting rods for travel limitation and additional safety protection. For high-pressure applications, an external pressured design is available. The standard configuration is offered without a liner, and customized dimensions can be provided upon request to meet specific project requirements.
## Applications
This expansion joint is widely used in HVAC and chilled water systems, steam and superheated steam piping, compressed air systems, hot oil transfer lines, petrochemical and refinery pipelines, as well as power generation facilities. Its versatility makes it an ideal choice for a broad range of industrial and commercial applications.
## Standards Compliance
The DN80 Metal Expansion Joint is manufactured and tested in accordance with EJMA (Expansion Joint Manufacturers Association) standards, ASME VIII, Division I, Appendix 26, and EN 14917, ensuring reliable performance and quality assurance.
