Single Sphere Type Rubber Joint Factory Leading China Suppliers of Flexible Connectors

High-performance Single Sphere Type Rubber Joint from a leading China factory. Featuring EPDM body, nylon cord fabric lining, hard steel wire frame, and Q235B flanges. Trust the top suppliers for durable piping solutions.



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The Single Sphere Type Rubber Joint is a high-performance flexible connector engineered to absorb vibration, reduce noise, and compensate for axial and lateral displacements in piping systems. Designed for durability and versatility, this joint prevents structural damage caused by thermal expansion and mechanical vibration, ensuring the long-term stability of industrial fluid transport networks.

Constructed with premium EPDM main body and reinforced with nylon cord fabric and hard steel wire, this rubber joint offers exceptional resistance to aging and pressure. Whether utilized in water supply, HVAC, or industrial processing, the Single Sphere Type Rubber Joint provides a reliable seal and flexible movement, significantly reducing maintenance costs and enhancing system safety.

Detailed Parameters

Main Body MaterialEPDM (Ethylene Propylene Diene Monomer) Lining MaterialHigh-strength Nylon cord fabric
Frame ReinforcementHard steel wire Flange MaterialQ235B Carbon Steel
Standard PressurePN10 / PN16 Available SizesDN32 (1 1/4") to DN1000 (40")
Deflection Angle10° to 15° (depending on size) Displacement TypeAxial & Lateral displacement
Max Size Diameter1160mm / 1170mm (DN1000) Axial MovementStretch and Compression capable

Key Advantages

Superior Durability

EPDM and hard steel wire construction ensure resistance to wear and long-term operational stability.

Vibration Damping

Effectively absorbs mechanical vibrations and reduces noise transmission across the pipeline.

Precision Alignment

Compensates for misalignments between connecting pipes through flexible lateral and axial movement.

Thermal Expansion

Accommodates expansion and contraction caused by temperature fluctuations in the fluid.

Standard Compliance

Manufactured to meet PN10 and PN16 standards for seamless integration into global systems.

Wide Compatibility

Available in a vast range of sizes from DN32 to DN1000 to suit any industrial requirement.

Product Gallery

Management Platforms

Inventory Control

Real-time tracking of valve and rubber joint stock levels to ensure rapid delivery.

Quality Assurance

Strict testing protocols for EPDM integrity and flange pressure resistance.

Order Monitoring

Automated notifications for production milestones and shipping status.

Technical Support

Direct access to engineering experts for custom sizing and installation guidance.

Logistics Optimization

Strategic packaging and shipping to prevent deformation of rubber components.

Lifecycle Tracking

Maintenance scheduling and performance monitoring for installed joints.

Investment Return Comparison

MetricStandard Rigid JointsSingle Sphere Rubber Joint
Installation TimeHigh (Requires Precision)Low (Flexible Alignment)
Maintenance FrequencyFrequent (Leakage Risks)Low (Vibration Absorption)
System LifespanMedium (Stress Accumulation)High (Stress Relief)
Noise LevelsHigh (Direct Transfer)Very Low (Damped)
Overall ROIBaseline35% Higher due to lower OpEx

Frequently Asked Questions

Q: What are the primary materials used in the Single Sphere Rubber Joint?

The joint is primarily made of high-quality EPDM for the body, reinforced with nylon cord fabric lining and a hard steel wire frame, with flanges made from Q235B carbon steel.

Q: How does a rubber joint help in reducing pipeline noise?

The EPDM material acts as a damper, absorbing the kinetic energy from pumps and machinery, preventing noise and vibration from traveling through the rigid metal piping.

Q: What is the difference between PN10 and PN16 ratings?

These ratings refer to the nominal pressure. PN10 is designed for systems up to 10 bar, while PN16 is engineered for higher pressure environments up to 16 bar.

Q: Can these joints compensate for piping misalignment?

Yes, they provide both axial and lateral displacement capabilities and a deflection angle (typically 10°-15°) to compensate for imperfect alignment.

Q: In which industries is this rubber joint most commonly used?

It is widely used in water treatment plants, HVAC systems, chemical processing, power plants, and any industrial application involving pumps and heavy machinery.

Q: How do I choose the correct size for my application?

Size selection is based on the nominal diameter (DN) of your piping, ranging from DN32 to DN1000. Please refer to our detailed parameters table for exact dimensions.

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