The SharkBite UC068LF PEX Barb Threaded Adapter is designed for transitioning between 1/2 inch PEX or PE-RT tubing and 3/4 inch Female National Pipe Thread (FNPT) connections. It is constructed from lead-free, dezincification-resistant (DZR) brass, ensuring corrosion resistance and suitability for potable water systems. The adapter is rated for a maximum working pressure of 200 PSI and an operating temperature range of 33°F to 200°F. This fitting utilizes a barb connection for PEX, compatible with either copper crimp rings or stainless steel clamps, meeting ASTM F1807 standards. It is certified for use in potable water and hydronic heating applications, complying with NSF/ANSI 61, NSF 372, and ASSE 1061. The adapter is approved for underground and behind-the-wall installations, though underground applications require wrappin