1" Type A Insert Fitting PEX Ball Valve. Barb x barb connection for PEX-A plumbing systems. Quarter Turn with lever handle used to open or close the flow of water in the system. For use with cold expansion PEX A pipe and sleeve system. Compatible with Uponor (Wirsbo) ProPEX piping systems (ProPEX is a trademark of Uponor). ASTM F1960.