Hangzhou Bright Rubber Plastic Product Co., Ltd. is one of the leading manufacturers and suppliers of 304 stainless steel threaded twin-sphere rubber expansion joint in China. If you're going to buy 304 stainless steel threaded twin-sphere rubber expansion joint made in China, welcome to get more information from our factory. We also accept customized orders.
Engineered for Flexibility and Space-Saving Installation
Unlike bulky flanged connectors, this twin-sphere joint is specifically designed for compact piping layouts. The 304 stainless steel threaded unions allow for rapid, tool-light installation and easy future maintenance without the need for welding. The dual-sphere rubber body provides a significant advantage over single-ball designs: it offers greater movement capability (axial compression, elongation, and lateral offset) while maintaining a smaller overall face-to-face length.
Core advantages:
Superior Vibration Damping: The double-bellows structure acts as an excellent shock absorber, isolating pump vibration and water hammer noise from the rest of the pipeline.
Corrosion-Resistant Connections: The 304 stainless steel unions are highly resistant to rust and corrosion, making them suitable for hot water, sanitary plumbing, and light chemical applications.
High-Pressure Stability: Inside the EPDM/NBR rubber body, high-tensile synthetic cord fabric is embedded, ensuring the joint holds its shape under PN16 working pressure.
Thread Compatibility: Available with BSPP (G) or NPT female threads to match standard pipe systems across different regions.
Products Description
This threaded expansion joint is a practical solution for residential, commercial, and light industrial plumbing. It is widely used at pump inlets/outlets, HVAC water lines, water heaters, and sanitary pipework where space is limited and vibration isolation is critical.
Technical Overview:
Size Range: 1/2" to 2" (DN15 - DN50)
Working Pressure: PN16 (16 Bar) standard
Rubber Options: EPDM (for hot water/steam), NBR (for oils/fuels), or NR (for general water)
Operating Temperature: -20°C to +120°C (depending on the rubber compound)
Marking & Customization: Each joint is permanently marked with the size and pressure rating. We accept custom sizes, specific thread standards, and OEM branding upon request.
Quality Assurance: Produced in our ISO 9001 and IATF 16949 certified facility, with full material traceability and third-party inspection options available.
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Company Information
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