Grinnell® Concentric Reducer, Series: 250, Reducer Fitting/Connector Type, 4 in x 3 in Nominal Size, Grooved, SCH 40/STD, Casting, Ductile Iron, Painted, Orange, Industry Standards: ASTM A536
Grooved fittings provide an economical and efficient method of changing direction, adding an outlet, reducing, or capping piping systems.