TR Flex Restrained Joint Ductile Iron Pipe


TR Flex Restrained Joint Ductile Iron Pipe is the most-widely accepted and installed integrally-cast restraint joint system in the ductile iron pipe industry. Proven as a versatile and easy-to-use item, this joint is flexible, sure, and watertight to and beyond its 350-psi pressure rating while preventing longitudinal separation of the joints whether installed above or below ground. TR Flex utilizes the Tyton joint gasket for a watertight seal along with a factory adapted spigot and extended bell casting to provide positive and permanent joint restraint.

The information found on this page may contain errors and/or omissions and is designed to be used as a reference only.


Imperial Sizes:
  • 3 in,
  • 4 in,
  • 6 in,
  • 8 in,
  • 10 in,
  • 12 in,
  • 14 in,
  • 16 in,
  • 18 in,
  • 20 in,
  • 24 in,
  • 30 in,
  • 36 in,
Joint Connection Type:
Material Types:
Pipe Size Control:
Pressure Class (PSI):
  • 350 psi,
  • 250 psi,

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