In the construction of the Hefei Hongrui Jinling Hotel, rubber expansion joints were widely used as essential components of the piping system. With their exceptional vibration dampening, displacement compensation, and sealing capabilities, these joints ensured the long-term stable operation of the hotel’s plumbing, HVAC, and drainage systems.
What Is a Rubber Expansion Joint?
A rubber expansion joint, also known as a rubber soft connector, flexible rubber joint, or rubber bellows, is a high-elasticity piping accessory commonly used to absorb displacement caused by thermal expansion and contraction, reduce pipe vibrations and noise, while also sealing and protecting equipment.
Key Performance Advantages
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Effective Vibration and Noise Reduction: The soft material effectively isolates mechanical vibrations from water pump operation, improving overall comfort.
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Flexible Displacement Compensation: The joint provides multi-directional displacement compensation, adaptable to complex piping layouts.
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Strong Corrosion Resistance: Suitable for environments with hot and cold water, HVAC refrigerants, and mildly corrosive media.
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Easy Installation and Maintenance: With standard flange connections, installation time is reduced, and subsequent maintenance is simplified.
Hotel Project Application
In this project, Shanghai Songjiang Group provided a variety of products, including single-sphere, double-sphere, and high-temperature rubber expansion joints, which were extensively used in the hotel’s water supply, central air conditioning, and heat exchange systems. Notably, the rubber joints with limiters performed particularly well in the basement high-pressure pump area, offering excellent protection and preventing damage from displacement and stretching.
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