Fire hydrants shall be manufactured in accordance with AWWA Standard C502, be listed by Underwriter’s Laboratories, Inc. and have Factory Mutual Research approval. Fire hydrants shall be designed for 250 psi working pressure and tested to 400 psi hydrostatic pressure. Fire hydrants shall be backed by manufacturer’s ten-year limited warranty. Fire hydrants shall be dry-top center stem construction having an O-ring sealed lubrication reservoir. Fire hydrants shall be manufactured with operating nut and thrust made of bronze, with bearings located both above and below the thrust collar and with operating nuts protected by a cast iron weather shield. Fire hydrants shall be manufactured with nozzles mechanically locked into the barrel and having O-ring pressure seals. Fire hydrants shall be a “Traffic Model”, complete with safety flanges and steel stem coupling. Nozzle section must rotate 360 degrees. Fire hydrant shoe bolts and juts shall be made of 304 stainless steel. Fire hydrants shall be manufactured with a main valve seat ring of bronze threaded into a bronze drain ring. A 360 degree drain channel shall have a minimum of two drain outlets. Fire hydrants shall have an upper valve plate and two urethane rubber facings that activate the drain ports. Fire hydrants shall be manufactured with a lower valve plate that bottoms out in the shoe for maximum opening. Fire hydrants shall have a one and one-half inch pentagon operating nut and open left. Fire hydrants shall have three-way with two and one-half inch and four and one-half inch NSHT nozzles. Fire hydrants shall be painted red. Fire hydrants shall have six inch mechanical joint inlet. Fire hydrants shall be manfutured with a minimum main valve opening of five and one-fourths inch. Fire hydrants shall be five and one-half foot bury. Fire hydrant shall be East Jordan Iron Works 5CD250 or Mueller Super Centurion 250 A-423.