Henan Liwei Industry Co., Ltd.
| Gas Tightness | Zero Leakage Air Tight |
| Nominal Diameter | DN50-DN600 |
| Temperature Range | -20 deg C to 120 deg C |
| Axis Displacement | Extension, Compression |
| Test Pressure | 1.5 Times Of Working Pressure |
| Vulcanization Process | High-temperature Molded Vulcanization |
| Application | HVAC, Water Supply, Marine, Chemical |
| Flange Standard | DIN, ANSI, JIS 10K |
| Reinforcement Layer | Multi-layer Nylon Cord Fabric + Steel Wire Strand |
| Connection Type | Flange/Threaded |
| Working Pressure | PN10/PN16/PN25 |
| Packaging Details | Inner Plastic Film,outer Wooden Case, If Multiple Compensators Are Packed In One Case, We Will Use Steel Frame To Fix It. |
| Burst Pressure | 6.0 MPa |
| Supply Ability | 100000 Pieces Per Month |
| Delivery Time | After Payment 15-30 Working Days |
| Body Material | EPDM, NBR, Neoprene (CR), NR, PTFE, FPM |
| Payment Terms | T/T,L/C,D/A |
| Model Number | DN50-DN600 |
| Brand Name | Liwei |
| Certification | ISO9001, TUV, WRAS, CO, MTC, PL, IV Etc |
| Place of Origin | China Henan |
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Product Specification
| Gas Tightness | Zero Leakage Air Tight | Nominal Diameter | DN50-DN600 |
| Temperature Range | -20 deg C to 120 deg C | Axis Displacement | Extension, Compression |
| Test Pressure | 1.5 Times Of Working Pressure | Vulcanization Process | High-temperature Molded Vulcanization |
| Application | HVAC, Water Supply, Marine, Chemical | Flange Standard | DIN, ANSI, JIS 10K |
| Reinforcement Layer | Multi-layer Nylon Cord Fabric + Steel Wire Strand | Connection Type | Flange/Threaded |
| Working Pressure | PN10/PN16/PN25 | Packaging Details | Inner Plastic Film,outer Wooden Case, If Multiple Compensators Are Packed In One Case, We Will Use Steel Frame To Fix It. |
| Burst Pressure | 6.0 MPa | Supply Ability | 100000 Pieces Per Month |
| Delivery Time | After Payment 15-30 Working Days | Body Material | EPDM, NBR, Neoprene (CR), NR, PTFE, FPM |
| Payment Terms | T/T,L/C,D/A | Model Number | DN50-DN600 |
| Brand Name | Liwei | Certification | ISO9001, TUV, WRAS, CO, MTC, PL, IV Etc |
| Place of Origin | China Henan | ||
| High Light | EPDM NBR double sphere rubber joint ，Anti-burst vulcanized rubber expansion joint ，Gas tight thermal compensation rubber joint | ||
This Anti-Burst Double Sphere Flexible Rubber Joint is manufactured through high-temperature molded vulcanization, forming a seamless single-body rubber bellows that delivers superior structural integrity and consistent performance across the full service life. The vulcanized rubber body provides high elasticity, reliable sealing and excellent resistance to pressure surge, making it a dependable choice for demanding piping systems.
The joint body is available in EPDM, NBR, Neoprene (CR), NR and PTFE lined options to match different media and working conditions. EPDM offers outstanding weather and chemical resistance, NBR provides reliable oil and fuel resistance, while Neoprene (CR) delivers flame retardance and UV resistance for outdoor and marine installations. The reinforced structure is built with multi-layer nylon cord fabric and steel wire strand, significantly improving burst pressure resistance and extending the service life under high-frequency vibration.
Precision vulcanization and the multi-layer reinforcement ensure gas tightness with zero leakage performance, allowing the joint to be applied to air, gas and vacuum lines as well as liquid systems. The flanged connection supports DIN, ANSI and JIS 10K standards, and the double sphere design offers large axial displacement and angular deflection to compensate for thermal expansion, pipeline misalignment and vibration transmission.
| Working Pressure | PN10/PN16/PN25 |
| Test Pressure | 1.5 Times Of Working Pressure |
| Burst Pressure | 6.0 MPa |
| Body Material | EPDM, NBR, Neoprene (CR), NR, PTFE, FPM |
| Reinforcement Layer | Multi-layer Nylon Cord Fabric + Steel Wire Strand |
| Vulcanization Process | High-temperature Molded Vulcanization |
| Gas Tightness | Zero Leakage Air Tight |
| Temperature Range | -20°C to 120°C |
| Connection Type | Flange/Threaded |
| Flange Standard | DIN, ANSI, JIS 10K |
| Axis Displacement | Extension, Compression |
| Nominal Diameter | DN50-DN600 |
The anti-burst double sphere rubber expansion joint is widely applied to HVAC systems, chilled water loops, pump suction and discharge lines, water supply and drainage networks, compressed air systems, chemical pipelines, and marine seawater systems. Its high elasticity and gas tight structure effectively absorb vibration, reduce noise and compensate for thermal expansion and pipe displacement, protecting pumps, valves and connected equipment from stress damage.
Manufactured in China Henan with ISO9001, TUV, WRAS and other certifications, the joint supports OEM and ODM customization including non-standard sizes, flange drilling and color options. The minimum order quantity is 1 set with negotiable pricing, and products are packed with inner plastic film and outer wooden case for safe shipment within 15-30 working days after payment.
Company Details
Business Type:
Manufacturer
Year Established:
1988
Total Annual:
70000000-120000000
Employee Number:
200~300
Ecer Certification：
Verified Supplier
Henan Liwei Industry Co., Ltd. was founded in 1988, covering an area of 42000 square meters. It is a manufacturing enterprise specializing in the research and development, production, and sales of anti-corrosion pipeline lining, flexible rubber joints, metal joints, rubber p... Henan Liwei Industry Co., Ltd. was founded in 1988, covering an area of 42000 square meters. It is a manufacturing enterprise specializing in the research and development, production, and sales of anti-corrosion pipeline lining, flexible rubber joints, metal joints, rubber p...
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