Specifications include, but are not limited to: Mechanical Joint Resilient seated gate valves. Valves shall conform to the latest revision of AWWA resilient seated gate valve standard C-515. Domestic manufacture only. Min. design working pressure shall be 200 p.s.i. for 2”-12” sizes. Valves shall have mechanical joint ends and be furnished complete with all M.J. accessories. Valves shall be non-rising stem type, opening by turning left and provided with a 2” square operating nut. Operating stem shall be manganese bronze only. The internal diameter of the water passageway shall, at a min. be as large as the connecting pipe inside diameter. All internal parts shall be accessible without removing the main body from the pressure line. All cast iron surfaces of the body and bonnet shall be completely coated with a corrosion resistant coating.