Robertshaw 4590-171 Flush Bushing 1/2" MPT x 3/8" FPT

The Robertshaw 4590-171 Flush Bushing is used to connect and adapt different threaded pipe sizes within control and fluid handling assemblies. The 1/2-inch male pipe thread and 3/8-inch female pipe thread specifications define its compatibility with varying connection points, allowing proper transition between fittings. Commonly applied in HVAC systems, it is positioned between threaded ports in valves, regulators and control lines to maintain secure alignment of connected components. Its flush-effective construction supports a compact connection layout while ensuring stable fitting between adjoining threaded sections in compatible equipment assemblies.