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Regular Flanges

Flexible Joint Flange

  • Flexible Connection: Achieves reliable connection between rigid pipes and flexible joints
  • Vibration Reduction and Noise Reduction: Effectively absorbs vibrations and reduces noise transmission
  • Compensation Function: Compensates for pipe thermal expansion/contraction and installation deviations
  • Good Pressure Resistance: Has excellent pressure resistance to ensure system safety
  • Easy Installation: Standard flange connection with simple installation
  • Wide Application: Suitable for various pipeline system vibration reduction applications
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Flexible Joint Flange is a special flange connector used to connect flexible joints (flexible connectors) with pipeline systems, achieving a transition connection between rigid pipes and flexible connectors. The product is widely used in pump inlet/outlet, pipe compensation, vibration reduction and noise reduction, thermal expansion compensation and other applications, effectively absorbing vibrations, displacements and thermal expansion of pipeline systems, reducing stress concentration and extending pipeline system service life. Flexible joint flanges are typically used with flexible connectors such as rubber flexible joints, stainless steel bellows flexible joints, etc., to form a complete flexible connection system. The flanges are manufactured using high-quality materials with excellent pressure resistance and sealing performance, ensuring connection reliability.

Technical Standards

Item Technical Standard
Material Carbon Steel, Stainless Steel, Cast Iron
Pressure Rating Class150-Class600
Size Range 1/2"-48" (DN15-DN1200)
Temperature Range -30℃ to +180℃
Connection Type Flanged Connection
Facing Type Raised Face (RF), Flat Face (FF)
Manufacturing Standard ASME B16.5, ASME B16.47, GB/T 9113
Inspection Standard ASME B16.47, GB/T 9124

Basic Models

Model Type Features
FJF-150 150LB Flexible Joint Flange Low pressure application, cost-effective
FJF-300 300LB Flexible Joint Flange Medium pressure application, stable performance
FJF-400 400LB Flexible Joint Flange High pressure application, high strength
FJF-600 600LB Flexible Joint Flange Ultra-high pressure application, safe and reliable

Main Components Material Table

No. Part Name Material
1 Flange Body A105, A120 F304, A120 F316
2 Sealing Face Same as flange body or overlay alloy
3 Bolt Holes Machined as per standard requirements
4 Surface Treatment Anti-corrosion coating, galvanized or sand blasting treatment
5 Matching Parts Rubber flexible joint, stainless steel bellows

No drawing available.