ALPHA™ Restrained Joint

ALPHA™ Restrained JointFlexible material compatibility, with reduced install times

Two bolt restraint coupling provides connection to a wide range of materials, including ductile iron, cast iron, HDPE and PVC pipe materials. The ease of installation saves time and money.

Alpha Restraints

ALPHA™ Restrained Joint System Benefits

  • Material flexibility
  • Accessibility
  • Ease of installation
  • Significantly reduced installation times


  • 4” – 12” Diameters
  • 350 psi Rating
  • Accommodates up to 8 Degrees of Deflection 
  • Manufactured in the USA
  • Restraint Accessories Factory Installed
  • Stab-fit Design Using Only One Type 304 Stainless Steel Fastener
  • Use with Ductile Iron, Cast Iron, HDPE and PVC Pipe Materials
  • Stronger Hold as Water Pressure Increases


  • Wastewater
  • Potable Water
  • Distribution Systems

ALPHA™ Restrained Joint System Products

  • Standard APLHA™
  • ALPHA™ Transition Coupling

ALPHA™ Restrained Joint Resources and Product Information

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