Double Spheres Reducing Floating Flanged Rubber Expansion Joint Connector
DN50-DN350
The Double Spheres Reducing Floating Flanged Rubber Expansion Joint Connector is a high-performance, multi-functional piping solution engineered to absorb vibration, compensate for misalignment, and accommodate thermal expansion and contraction in complex fluid systems. Featuring a unique dual-sphere reducing design, this connector efficiently transitions between different pipe diameters while providing exceptional flexibility, noise reduction, and pressure resistance. Its floating flanged ends ensure easy installation and maintenance, making it ideal for demanding industrial, municipal, and marine applications.
Delivery
FOB
Supply Ability
100piece / Month
Country of Origin
CCHINA
Stock Time
30Day
Quantity:
US $50.00 - US $1000.00 / piece
Key Design Features
Double Sphere Reducing Configuration – The two-sphere profile enables large angular, lateral, and axial movements while smoothly transitioning from a larger to a smaller nominal bore size, eliminating the need for separate reducers.
Floating Flanged Ends – Rotating, loose flanges (compatible with ANSI, DIN, JIS, or BS standards) simplify bolt alignment and reduce installation stress, allowing for quick disconnection without pipe strain.
High-Strength Reinforcing Layers – Multiple piles of nylon or aramid cord fabric, embedded within the rubber body, provide burst resistance and dimensional stability under high pressures and vacuum conditions.
Versatile Elastomer Options – Available in EPDM, NBR, Neoprene, or Hypalon to suit various media, including water, seawater, oil, chemicals, hot air, and slurries, with temperature ranges from –40°C to +120°C (depending on material).
Integral Control Rods (Optional) – Limit axial extension and protect the joint from excessive movement, ensuring safe operation during pressure surges or system transients.
Operational Benefits
Superior Vibration Damping & Noise Reduction – The elastomeric body effectively absorbs pump, compressor, and flow-induced vibrations, reducing mechanical stress on adjacent equipment and piping supports.
Large Movement Absorption – Accommodates axial compression, extension, lateral deflection, and angular rotation simultaneously, protecting rigid components from fatigue and fracture.
Pressure & Vacuum Resistance – Engineered with a robust arch profile and reinforcement to withstand working pressures up to 16 bar (higher on request) and full vacuum service without collapsing.
Corrosion & Abrasion Resistance – The rubber inner liner resists scaling, corrosion, and erosion, ensuring long service life even with abrasive or slightly aggressive fluids.
Easy Alignment & Maintenance – Floating flanges allow rotation to match bolt holes on site, reducing installation time and eliminating the need for precise angular positioning of fixed flanges.
Typical Applications
Pump suction and discharge lines
Chiller and HVAC systems
Cooling water and firefighting networks
Shipbuilding and offshore platform piping
Chemical processing and wastewater treatment plants
Power generation and district heating/cooling systems
Technical Specifications (Reference)
Nominal Sizes: DN50 to DN600 (larger sizes available on request)
Pressure Rating: PN10 / PN16 / Class 150 / Class 300 (customizable)
Temperature Range: –40°C to +120°C (depending on rubber compound)
End Connections: Floating flanges with drilled holes per customer standard
Axial Compression: 20–50 mm (depending on size and pressure)
Axial Extension: 10–30 mm
Lateral Deflection: ±15° to ±30°
Manufacturing Standards: BS EN 1594, ISO 1307, or equivalent
