- New
51123 BestPEX by Elkhart Supply is a straight brass adapter designed to connect a 1/2-inch hose-barb connection to a 3/4-inch male pipe thread. It is intended for compatible plumbing installations, including recreational vehicle freshwater systems. The barbed end accommodates the appropriate hose, while the threaded end connects to a compatible female pipe fitting. Before installation, verify the hose diameter, thread type and connection requirements of your existing plumbing system.