Earthquake Joint System
The AMERICAN Earthquake Joint System (Patent 10,436,367) combines the rugged, tough, and time-proven deflection performance of AMERICAN’s Flex-Ring restrained joint pipe with the capacity to expand and contract.
The system is built around a ductile iron Earthquake System casting that features in its design an extended socket depth allowing the specially placed Flex-Ring weld ring an expansive range of motion.
The ductile iron Earthquake System casting and Flex-Ring connecting piece arrive at the jobsite pre-assembled by our professional staff at our manufacturing plant. The extended socket receives a special Flex-Ring spigot end with a specially located restraining ring. The pre-assembled Earthquake System spigot has a double stripe, one showing full insertion and the other mid-point insertion.