JG Speedfit PPSV501222WP 3/8" X 1/4" NPFT Female Elbow Shut Off Valve, White The PPSV Range and Shut-off Valve is offered for tube sizes 1/4" O.D. And 3/8" O.D., produced in polypropylene and fitted EPDM O-Rings. Polypropylene has the advantage of being more chemically resistant than acetal. The valves are use with potable water. JG Speedfit PPSV501222WP 3/8" X 1/4" NPFT Female Elbow Shut Off Valve, White Features: Designed for hot and cold water and radiant heating systems Push fit fittings Twist and lock for added security No tools required Works with copper, CVPC, and PEX pipe Permanent leakproof connection Easy to install Lead free 3/8" x 1/4" NPFT