PTFE Lining Flanged Stainless Steel Metal Bellows Expansion Joint Compensator
DN25 1''-DN3000 120''.
The PTFE Lining Flanged Stainless Steel Metal Bellows Expansion Joint Compensator is a high-performance pipeline component designed to absorb axial, lateral, and angular movements in piping systems while providing superior corrosion resistance. The combination of a stainless steel bellows with a PTFE (polytetrafluoroethylene) lining creates an ideal solution for handling aggressive chemical media in demanding industrial environments.
Delivery
FOB
minimum order
1 piece
Supply Ability
100piece /
Country of Origin
China
Stock Time
30Day
Quantity:
US $1.00 - US $10000.00 / piece
Construction and Materials
The compensator features a stainless steel bellows as the core flexible element, typically manufactured from grades such as SS304, SS316L, or other corrosion-resistant alloys. The bellows is formed through precision hydraulic or mechanical forming processes, ensuring consistent wall thickness and reliable fatigue life. Each bellows is lined with a seamless PTFE layer that serves as an effective barrier against corrosive fluids, preventing direct contact between the process medium and the stainless steel substrate.
The flanged connections are available in standard configurations including ANSI, DIN, JIS, and EN standards, with flange materials matching the stainless steel grade of the bellows. The PTFE lining extends across the flange face to ensure a continuous protective barrier and reliable sealing performance.
Key Features
Excellent corrosion resistance is achieved through the PTFE lining, which is chemically inert to virtually all industrial chemicals, including strong acids, alkalis, and organic solvents. The stainless steel bellows provides mechanical strength and pressure containment, while the PTFE lining handles the chemical compatibility requirements. The expansion joint offers effective compensation for thermal expansion, vibration, and misalignment in piping systems, reducing stress on equipment and extending service life. The smooth PTFE surface minimizes friction and prevents material buildup, making it suitable for applications requiring high purity or sanitary conditions.
Technical Specifications
The compensator is available in nominal diameters ranging from DN25 to DN1200 or larger upon request. Pressure ratings typically range from PN10 to PN25, depending on the diameter and bellows design. Operating temperature limits are generally from -20°C to 150°C for standard PTFE lining, with special grades available for higher temperatures. The bellows fatigue life typically exceeds 1000 cycles under rated conditions. Movement capabilities include axial compression and extension, lateral offset, and angular deflection, with specific values depending on the nominal diameter and bellows configuration.
Applications
This product is widely used in chemical processing plants, petrochemical facilities, pharmaceutical manufacturing, water treatment systems, power generation, and other industries where corrosive media are present. Typical installations include pipeline connections between pumps and valves, tank inlet and outlet lines, heat exchanger connections, and any location where thermal movement or vibration isolation is required in combination with chemical resistance.
Installation and Maintenance
The expansion joint should be installed in accordance with the manufacturer's instructions, with proper alignment maintained and anchors and guides installed as specified in the piping design. The PTFE lining should be inspected periodically for signs of wear, cracking, or deformation. The bellows should be checked for corrosion or mechanical damage during routine maintenance. Proper handling during installation is essential to avoid damage to the PTFE lining and the bellows convolution.
Quality Assurance
Each unit is manufactured under a quality management system conforming to ISO 9001 standards. Pressure testing, dimensional inspection, and material certification are performed before shipment. Third-party inspection and certification can be arranged upon request.
The compensator features a stainless steel bellows as the core flexible element, typically manufactured from grades such as SS304, SS316L, or other corrosion-resistant alloys. The bellows is formed through precision hydraulic or mechanical forming processes, ensuring consistent wall thickness and reliable fatigue life. Each bellows is lined with a seamless PTFE layer that serves as an effective barrier against corrosive fluids, preventing direct contact between the process medium and the stainless steel substrate.
The flanged connections are available in standard configurations including ANSI, DIN, JIS, and EN standards, with flange materials matching the stainless steel grade of the bellows. The PTFE lining extends across the flange face to ensure a continuous protective barrier and reliable sealing performance.
Key Features
Excellent corrosion resistance is achieved through the PTFE lining, which is chemically inert to virtually all industrial chemicals, including strong acids, alkalis, and organic solvents. The stainless steel bellows provides mechanical strength and pressure containment, while the PTFE lining handles the chemical compatibility requirements. The expansion joint offers effective compensation for thermal expansion, vibration, and misalignment in piping systems, reducing stress on equipment and extending service life. The smooth PTFE surface minimizes friction and prevents material buildup, making it suitable for applications requiring high purity or sanitary conditions.
Technical Specifications
The compensator is available in nominal diameters ranging from DN25 to DN1200 or larger upon request. Pressure ratings typically range from PN10 to PN25, depending on the diameter and bellows design. Operating temperature limits are generally from -20°C to 150°C for standard PTFE lining, with special grades available for higher temperatures. The bellows fatigue life typically exceeds 1000 cycles under rated conditions. Movement capabilities include axial compression and extension, lateral offset, and angular deflection, with specific values depending on the nominal diameter and bellows configuration.
Applications
This product is widely used in chemical processing plants, petrochemical facilities, pharmaceutical manufacturing, water treatment systems, power generation, and other industries where corrosive media are present. Typical installations include pipeline connections between pumps and valves, tank inlet and outlet lines, heat exchanger connections, and any location where thermal movement or vibration isolation is required in combination with chemical resistance.
Installation and Maintenance
The expansion joint should be installed in accordance with the manufacturer's instructions, with proper alignment maintained and anchors and guides installed as specified in the piping design. The PTFE lining should be inspected periodically for signs of wear, cracking, or deformation. The bellows should be checked for corrosion or mechanical damage during routine maintenance. Proper handling during installation is essential to avoid damage to the PTFE lining and the bellows convolution.
Quality Assurance
Each unit is manufactured under a quality management system conforming to ISO 9001 standards. Pressure testing, dimensional inspection, and material certification are performed before shipment. Third-party inspection and certification can be arranged upon request.
