How is Ductile Iron pipe joined together and sealed from leakage?
The proprietary VRS-T® Restrained Joint is designed with bell and spigot ends sealed by a thick rubber gasket. The tight manufacturing specifications produce a joint that is leak-free over the entire range of operating pressures (up to 1,450 psi). Inherent in the joint design is the ability to accommodate deflection up to 5° without having to use fittings or making field cuts. The joint is locked in place with Ductile Iron “joggles” (locking segments). All Ductile Iron pipe and fittings use the VRS-T® Restrained Joint.
