Joint Restraint, 4"Pipe Ductile Iron Style B

Key Features

• With HARCO pipe to pipe restraints as well as pipe to pipe restraints and valve restraints, underground gasketed piping can be installed without the use of concrete thrust blocks, joint restraint is especially useful for bridge crossings, stream crossings, unstable soils, fill areas, and places where concrete thrust blocks are awkward
• Joint restraint systems tie lengths of pipe to a fitting, relying on the friction of the soil on the pipe to resist fitting thrust forces, there are times when additional lengths of pipe are required to hold the fitting, the pipe to pipe restraint is for this purpose, a simple restrained length calculation program allows a user to input the variables from his application and identify the joint restraint design required for his job
• HARCO pipe grip rings are machined to ensure sharp, consistent serrations, and roundness, this allows perfect gripping of the pipe every time, long term performance is guaranteed, on larger fittings, forces rise considerably, with HARCO style D restraint there is no danger of cocking that can reduce the life of the pipe