4 x 2 1/2 150# Galvanized Reducing CouplingThe 4 x 2 1 2 150# Galvanized Reducing Coupling is a heavy duty threaded pipe fitting designed to connect pipes of different diameters securely. Made from high strength malleable iron and coated with a hot dip galvanized finish, it offers superior corrosion resistance for water, gas, air, and industrial piping systems. With a 150 PSI pressure rating, this coupling ensures durability and long lasting performance, even in harsh environments.