Hydraulic fitting

socketironflexible

Combining the sealing features of the time-proven Fastite joint, the AMERICAN Field Flex-Ring joint provides flexible, field adaptable restraint against endwise separation due to thrust and is easily assembled. For the 4-inch, 6-inch, 8-inch and 12-inch sizes (small diameter), the AMERICAN Field Flex-Ring is a field adaptable restrained joint utilizing a grooved end and a corrosion-resistant, high-strength, low-alloy (HSLA) steel ring, simulating a weld ring. The restraint is provided by a wedging action that acts between the steel ring and a yellow painted ductile iron split Flex-Ring. Once the grooved fabricated end is created and the steel ring is installed, the Field-Flex Ring spigot end behaves identically to the shop fabricated Flex-Ring spigot end. After the spigot end of the Field Flex-Ring pipe is assembled into the Flex-Ring bell, the split Flex-Ring is inserted and springs into the socket locking groove. The Flex-Ring is securely positioned behind the bolt-on field ring and in the socket locking groove on the inside of the pipe bell providing the flexible restraint. The small diameter AMERICAN Field Flex-Ring is designed to restrain joints with the same allowable working pressures and deflection capabilities as the standard Flex-Ring Joint. Small diameter Field Flex-Rings may be used with a minimum 53 thickness class ductile iron pipe with a maximum working pressure of 350 psi. Restrained joints using the AMERICAN Field Flex-Ring have been factory tested to withstand dead end thrust resulting from more than twice the rated working pressure.