Theodore B Dennis , MA March 31, 2017 Appliance: Jenn-Air Refrigerator JRSD209TW Jenn-Air Refrigerator Jrsd209tw: Waterline leaking at the connection union. How to replace Kit Dual Water Valve. Waterline leaking at the connection union. Replaced 3/8" - 5/16" union, good as new. 3 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes