EPDM/NBR/Hypalon Double Spheres Floating Flanged Rubber Expansion Joint
DN50-DN1200.
The EPDM/NBR/Hypalon Double Sphere Floating Flanged Rubber Expansion Joint is a highly engineered flexible connector designed to absorb multi-directional movement, reduce vibration, and compensate for pipe misalignment in demanding piping systems. Its distinct double-sphere configuration provides greater movement capability than a standard single-sphere design, making it ideal for applications involving significant thermal expansion, equipment vibration, or complex piping layouts.
Delivery
FOB
minimum order
1 piece
Supply Ability
100piece / Month
Country of Origin
China
Stock Time
30Day
Quantity:
US $1.00 - US $5000.00 / piece
Key Features & Benefits
Superior Movement Absorption: The double-sphere design allows for substantial axial (compression and extension), lateral (transverse), and angular deflection, accommodating system shifts caused by thermal changes, pressure surges, or settling.
Superior Movement Absorption: The double-sphere design allows for substantial axial (compression and extension), lateral (transverse), and angular deflection, accommodating system shifts caused by thermal changes, pressure surges, or settling.
Effective Noise & Vibration Dampening: The elastomeric body significantly isolates mechanical noise and dampens vibration from pumps, compressors, and other rotating equipment, protecting sensitive components and extending system life.
Floating Flange Design: Equipped with loose (floating) steel flanges that rotate freely, this design simplifies alignment and installation by accommodating mismatched bolt holes without needing to twist the rubber body. This also eases maintenance and replacement.
High-Strength Construction: The joint is constructed from a robust combination of an inner rubber liner, multiple plies of high-tensile nylon tire cord reinforcement, and a durable outer elastomeric cover. This vulcanized composite provides exceptional pressure resistance and burst strength.
Material Specifications & Media Compatibility
The selection of the inner liner and outer cover materials is crucial for ensuring chemical compatibility and long service life.
The selection of the inner liner and outer cover materials is crucial for ensuring chemical compatibility and long service life.
EPDM (Ethylene Propylene Diene Monomer):
Best for: Hot and cold water, steam, dilute acids and alkalis, glycol solutions, and HVAC systems. Suitable for potable water applications.
NBR (Nitrile Butadiene Rubber):
Best for: Oils, fuels, lubricants, greases, and other petroleum-based fluids. Offers excellent resistance to aliphatic hydrocarbons and mineral oils.
Hypalon (Chlorosulfonated Polyethylene - CSM):
Best for: Chemical resistance, particularly to strong acids, bases, and oxidizing agents. Also exhibits excellent ozone and UV resistance for outdoor applications.
Construction & Design Details
Body: Double-sphere elastomeric bellows composed of inner tube, reinforcement layers, and outer cover.
Body: Double-sphere elastomeric bellows composed of inner tube, reinforcement layers, and outer cover.
Reinforcement: Nylon tire cord fabric, providing strength and flexibility without compromising movement.
Flanges: Floating (loose) type, typically in carbon steel (zinc-plated or coated for corrosion resistance). Flanges are drilled to standard specifications like ANSI, DIN, or BS Table. Optional materials like stainless steel are available for specialized applications.
Root Ring (Optional): An external retaining or root ring can be incorporated into the design to provide additional pressure support and structural integrity for larger sizes or higher pressures.
Typical Applications
HVAC & Refrigeration: Chilled and hot water systems, cooling towers.
HVAC & Refrigeration: Chilled and hot water systems, cooling towers.
Water & Wastewater: Pump connectors, treatment plants, potable water lines.
Power Generation: Cooling water circuits, steam systems.
Industrial Process: Chemical plants, pulp and paper, manufacturing facilities.
Oil & Gas: Pump stations, compressor connections, lubrication systems.
General Industry: Fire protection, marine piping, compressed air systems.
Note: Standard operating limits typically range from PN10 to PN16 bar, with temperatures from -40°C up to +130°C depending on the elastomer selection. For specific pressure ratings and dimensions, please consult the detailed data sheet.
