- New
51197 is an Elkhart Supply BestPEX 90° brass elbow fitting designed for compatible potable water plumbing applications. It features a 3/8" PEX barbed end and a 1/2" female NPT swivel nut, allowing the connection to change direction by 90 degrees. The fitting is made of brass and is supplied as a single unit. It is suitable for compatible RV and plumbing repairs where these connection sizes and configurations are required.