SharkBite, 3/4 in. PEX-A x 3/4 in. brass expansion ball valve. Designed for use with PEX-A pipe and expansion rings. SharkBite expansion fittings are designed for use in potable water distribution systems. Expansion fittings require an expansion tool in ordered to make the connection. Lead-free dezincification resistant brass construction. Compatible with PEX-A pipe only. Requires PEX expansion tool and expansion rings to make connection. Approved for water service lines and burial applications including concrete. Meets ASTM F-1960 and ASTM F-877 standard.