- New
28803 is an Elkhart Supply BestPEX 90-degree elbow fitting designed for compatible RV fresh-water plumbing systems. It features a 1/2" PEX connection and a 1/2" male pipe thread (MPT) connection. The fitting is made of black plastic and provides a practical way to connect PEX tubing to a compatible female threaded fitting at a 90-degree angle. Ideal for RV plumbing repairs and installations where the specified connections are required.