Seismic Flex Coupling™

McWane Ductile’s Seismic Flex Coupling™ offers a dependable and cost-effective solution for ground displacement, liquefaction, and strain along fault lines or structures. Its time-proven TR Flex^® joint design ensures high pull-out strength, even when fully extended, making it suitable for use in seismic activity areas. Constructed of Ductile iron, the coupling has a working pressure rating of 350 psi for sizes 4-inch through 24-inch and 250 psi for sizes 30-inch through 36-inch. This product complies with all AWWA C153 requirements.