The Waterline 1/2" Chrome-Plated Brass PEX Barb x 3/8" Compression Quarter-Turn Dishwasher Tee Valve is a unique design that allows flow control to the outlet. Designed with retrofit dishwasher and water filtration installations in mind, simply cut the PEX pipe, install the tee using Waterline fasteners and connect a standard 3/8" compression style water supply line to both the appliance and the valve and the project is complete. The 3/8" compression outlet provides the capability to install 3/8" tubing or 3/8" supply lines.