Specifications include, but are not limited to: All valves shall be constructed with a high strength cast iron body and bonnet and coated with a corrosion resistant finish. All bolts will be of corrosion proof steel. Flange dimensions and drilling shall comply with ANSI B16.1, class 125. Mechanical joint type valve dimensions shall comply with the latest revision of ANSI A21.11 and AWWA C-111. Operating nuts for all valves shall be square, two (2) inches, face-to-face unless otherwise noted. All valves shall be "open left" or open counter-clockwise. The bid quantities specified are approximate and are used as a basis for bidding only. These quantities were determined from past experience, and do not obligate the City to purchase these amounts. Resilient Seat Gate Valves All Resilient Seat valves shall meet or exceed AWWA Standard C509, as manufactured by American Flow Control or approved equal. Valves shall be finished, inside and outside, with an epoxy coating. The solid bronze stem shall have two O-ring stem seals; one above and one below the thrust collar. The area between these seals shall be filled with lubricant to provide permanent lubrication for the thrust collar and O-rings. Valve stems for all gate valves in this section shall be of the non-rising stem type (unless otherwise noted), machined from a solid bronze rod. Butterfly Valves All valves in this section shall be designed, manufactured, and tested in accordance with AWWA C504, latest revision. Valves shall be rated and tested for absolute zero leakage shut-off. Valve body shall be ductile iron (ASTM A536 Grade 65-45-12) with flanged ends drilled per ANSI B16.1. Valve disc shall be solid type ductile iron with resilient seat with 360° uninterrupted contact. Valve shaft shall be per AWWA stainless steel. Bearings shall be self lubricating. Manual actuators shall be directly mounted to the valve by the valve manufacturer. Actuator shall have field adjustable stops and be capable of holding disc stationary in any position under full rated pressure. Stop limiting devices must withstand 300 ft-lbs of input torque without failure.