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NHFLEX-B
Ninghao
NHFLEX-B TYPE High Pressure Double Sphere Rubber Flexible Joint with ANSI Flanges
The double sphere rubber joint is a reliable and versatile component widely applied in piping systems. Its primary function is to absorb movement, minimize vibration, and compensate for misalignment, ensuring smooth operation and extending the service life of the pipeline. Constructed from premium rubber materials, it offers excellent durability and strong resistance to corrosion, chemicals, and extreme temperature conditions, making it a dependable choice for demanding environments.
Double Sphere Design – Greater Flexibility
The dual-sphere structure provides increased axial, lateral, and angular movement capability compared to single sphere joints, making it especially suitable for high-movement pipeline systems.
High Pressure Performance
Reinforced with high-strength nylon cord or steel wire layers, the rubber body withstands elevated working pressures while maintaining excellent elasticity and fatigue resistance.
ANSI Standard Flanges
Equipped with ANSI B16.5 flanges for precise fit, easy installation, and compatibility with international piping systems.
Excellent Vibration & Noise Isolation
Effectively absorbs mechanical vibration and reduces noise transmission, extending the service life of connected equipment.
Size Range: DN25–DN1200
Pressure Rating: 150 PSI / 300 PSI / higher on request
Flange Standard: ANSI B16.5
Rubber Materials: EPDM, NBR, Neoprene, NR
Flange Materials: Carbon steel, stainless steel, galvanized steel
Temperature Range: −30°C to +150°C (depending on rubber type)
Designed for high pressure and heavy-duty operation
Reduces maintenance and operating costs
Improves system safety and stability
Long service life with proven industrial performance

NHFLEX-B TYPE High Pressure Double Sphere Rubber Flexible Joint with ANSI Flanges
The double sphere rubber joint is a reliable and versatile component widely applied in piping systems. Its primary function is to absorb movement, minimize vibration, and compensate for misalignment, ensuring smooth operation and extending the service life of the pipeline. Constructed from premium rubber materials, it offers excellent durability and strong resistance to corrosion, chemicals, and extreme temperature conditions, making it a dependable choice for demanding environments.
Double Sphere Design – Greater Flexibility
The dual-sphere structure provides increased axial, lateral, and angular movement capability compared to single sphere joints, making it especially suitable for high-movement pipeline systems.
High Pressure Performance
Reinforced with high-strength nylon cord or steel wire layers, the rubber body withstands elevated working pressures while maintaining excellent elasticity and fatigue resistance.
ANSI Standard Flanges
Equipped with ANSI B16.5 flanges for precise fit, easy installation, and compatibility with international piping systems.
Excellent Vibration & Noise Isolation
Effectively absorbs mechanical vibration and reduces noise transmission, extending the service life of connected equipment.
Size Range: DN25–DN1200
Pressure Rating: 150 PSI / 300 PSI / higher on request
Flange Standard: ANSI B16.5
Rubber Materials: EPDM, NBR, Neoprene, NR
Flange Materials: Carbon steel, stainless steel, galvanized steel
Temperature Range: −30°C to +150°C (depending on rubber type)
Designed for high pressure and heavy-duty operation
Reduces maintenance and operating costs
Improves system safety and stability
Long service life with proven industrial performance

Compensating for Thermal Expansion and Contraction: Rubber expansion joints compensate for thermal expansion and contraction caused by temperature variations in the pipeline. They prevent excessive stress on the pipeline system due to temperature changes, thereby protecting the pipes from damage.
Absorbing Vibrations and Impacts: Rubber expansion joints absorb stresses caused by vibrations and impacts in the pipeline system, reducing the transmission of vibrations and noise. This helps protect the pipeline and related equipment from damage.
Compensating for Pipe Movements: During installation and operation, pipeline systems may experience certain degrees of pipe movement. Rubber expansion joints compensate for these movements, ensuring the proper functioning of the pipeline system.
Leak Prevention: Rubber expansion joints provide sealing performance in pipeline systems, reducing the risk of leaks and ensuring the safe operation of the pipelines.
Compensating for Thermal Expansion and Contraction: Rubber expansion joints compensate for thermal expansion and contraction caused by temperature variations in the pipeline. They prevent excessive stress on the pipeline system due to temperature changes, thereby protecting the pipes from damage.
Absorbing Vibrations and Impacts: Rubber expansion joints absorb stresses caused by vibrations and impacts in the pipeline system, reducing the transmission of vibrations and noise. This helps protect the pipeline and related equipment from damage.
Compensating for Pipe Movements: During installation and operation, pipeline systems may experience certain degrees of pipe movement. Rubber expansion joints compensate for these movements, ensuring the proper functioning of the pipeline system.
Leak Prevention: Rubber expansion joints provide sealing performance in pipeline systems, reducing the risk of leaks and ensuring the safe operation of the pipelines.








No.2 Taishan Road, Development Zone, Ningjin County, Shandong Province
Phone: +86-15806526381
+86-18561954252
Skype: rubberjoint1
Email: njninghaojixie@163.com