• Finished valve body and poppet assembly are cast from red brass • Abrasion resistant O-ring is precision fitted to the poppet for a positive seal into the tapered self-cleaning valve seat • Check valve has Delrin guide bearing for the poppet stem, assures smooth, noise-free valve operation • Corrosion resistant materials - stainless steel spring, red brass castings, and stainless steel lock nut • Can be used in both vertical and horizontal positions • Merrill red brass check valves are individually cartoned