DN450 PN16 Full Face Flanged Rubber Expansion Joint Connector
DN450 PN16
The DN450 PN16 Full Face Flanged Rubber Expansion Joint is a high-performance flexible connector engineered to address critical challenges in piping systems, including thermal expansion, vibration transmission, and pipe misalignment. Designed with an integral full-face rubber flange and a single-arch bellows, this joint provides exceptional sealing reliability and stress relief across a wide range of industrial applications.
Delivery
FOB
minimum order
1 piece
Supply Ability
100piece / Month
Country of Origin
CHINA
Stock Time
30Day
Quantity:
US $1.00 - US $10000.00 / piece
Key Design Features
Full Face Flanged Ends
The expansion joint is equipped with integral full-face rubber flanges that are molded to the same thickness as the flange diameter. This design provides a self-sealing function, eliminating the need for separate gaskets when installed between flat-face pipe flanges. The full-face profile ensures optimal load distribution across the entire flange surface, enhancing sealing integrity and protecting the rubber from damage.
Full Face Flanged Ends
The expansion joint is equipped with integral full-face rubber flanges that are molded to the same thickness as the flange diameter. This design provides a self-sealing function, eliminating the need for separate gaskets when installed between flat-face pipe flanges. The full-face profile ensures optimal load distribution across the entire flange surface, enhancing sealing integrity and protecting the rubber from damage.
Robust Construction
The joint is constructed with a rubber bellows reinforced with multiple layers of high-strength synthetic fabric, such as polyester or nylon tire cord, embedded within the rubber matrix. An internal steel wire reinforcing ring at the flange ends ensures the spherical section remains securely engaged within the flange assembly, preventing pull-out under pressure.
The joint is constructed with a rubber bellows reinforced with multiple layers of high-strength synthetic fabric, such as polyester or nylon tire cord, embedded within the rubber matrix. An internal steel wire reinforcing ring at the flange ends ensures the spherical section remains securely engaged within the flange assembly, preventing pull-out under pressure.
Standard Compliance
This product conforms to PN16 pressure rating standards, with flanges designed to mate with PN16 flat-face pipe flanges. The DN450 nominal size ensures compatibility with large-diameter piping systems in heavy industrial settings.
This product conforms to PN16 pressure rating standards, with flanges designed to mate with PN16 flat-face pipe flanges. The DN450 nominal size ensures compatibility with large-diameter piping systems in heavy industrial settings.
Performance Capabilities
Movement Absorption
The single-arch bellows design effectively absorbs axial compression, axial extension, lateral deflection, and angular displacements. This flexibility compensates for thermal expansion and contraction, reduces stress on pipe anchors, and accommodates minor installation misalignments.
Movement Absorption
The single-arch bellows design effectively absorbs axial compression, axial extension, lateral deflection, and angular displacements. This flexibility compensates for thermal expansion and contraction, reduces stress on pipe anchors, and accommodates minor installation misalignments.
Vibration and Noise Dampening
The highly elastic elastomeric construction significantly dampens mechanical vibrations and reduces noise transmission generated by pumps, compressors, and other rotating equipment, protecting downstream piping and sensitive instruments.
The highly elastic elastomeric construction significantly dampens mechanical vibrations and reduces noise transmission generated by pumps, compressors, and other rotating equipment, protecting downstream piping and sensitive instruments.
Pressure and Temperature Ratings
While precise values depend on the selected elastomer, typical configurations support operating pressures up to 16 bar and temperature ranges from -20°C to over +100°C, with specialized materials available for more extreme conditions.
While precise values depend on the selected elastomer, typical configurations support operating pressures up to 16 bar and temperature ranges from -20°C to over +100°C, with specialized materials available for more extreme conditions.
Material Options
The expansion joint can be manufactured in various elastomers to suit specific media and environmental requirements:
The expansion joint can be manufactured in various elastomers to suit specific media and environmental requirements:
EPDM – For hot water, cooling water, seawater, dilute acids, and outdoor weather resistance.
NBR – For oils, fuels, solvents, and compressed air applications.
Natural Rubber – For abrasive slurries and high-wear services.
CR (Neoprene) – For cooling water, mildly oily water, and seawater.
FPM (Viton) – For aggressive chemicals and high-temperature service.
IIR (Butyl) – For hot water, acids, bases, and gases.
Additional options include food-grade, drinking-water-approved, and abrasion-resistant compounds. PTFE linings are available for highly corrosive media.
Installation Considerations
Proper Installation
Install the joint in its natural, uncompressed state to ensure optimal performance. The reinforcing ring at each flange must be fully seated within the mating flange's bolt holes to secure the connection under pressure.
Proper Installation
Install the joint in its natural, uncompressed state to ensure optimal performance. The reinforcing ring at each flange must be fully seated within the mating flange's bolt holes to secure the connection under pressure.
Flange Compatibility
The full-face rubber flange is designed for flat-face pipe flanges. If raised-face flanges are used, equalization measures such as a metal backing plate or custom-molded recess compensation are required to prevent the raised face from cutting into the rubber.
The full-face rubber flange is designed for flat-face pipe flanges. If raised-face flanges are used, equalization measures such as a metal backing plate or custom-molded recess compensation are required to prevent the raised face from cutting into the rubber.
Bolting Guidelines
Use bolts of appropriate length; they should not protrude excessively past the nut, and they must be tightened evenly in a cross pattern to ensure uniform compression. For joints near pump nozzles or with high dynamic loads, consider using stop blocks or limit rods to control axial movement.
Use bolts of appropriate length; they should not protrude excessively past the nut, and they must be tightened evenly in a cross pattern to ensure uniform compression. For joints near pump nozzles or with high dynamic loads, consider using stop blocks or limit rods to control axial movement.
