- New
16821 is an Elkhart Supply Flair-It swivel tee designed for compatible fresh-water plumbing systems. It features two 1/2" PEX connections and one 1/2" female pipe thread (FPT) swivel connection. The tee configuration allows a water line to branch into a third connection while the swivel end provides installation flexibility. Made of plastic, it is suitable for compatible RV, trailer and other potable-water applications. Verify the tubing and thread specifications before installation.