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Valves shall be rated for a minimum 150 psi working pressure and a minimum body test pressure of <br />300 psi. When closed, the valve shall be drip -tight under rated pressure differential applied alternately <br />to each side of the gate. <br />The interior of the valve shall be epoxy lined in accordance with AWWA C550. The exterior of the <br />valve shall receive a minimum of two, 2 mill dry film thickness, asphaltic coating. All exterior exposed <br />bolts, studs, and nuts shall be corrosion resistant, zinc -coated in conformance with ASTM A153. <br />2.02 VALVE BOXES <br />All buried valves shall have cast two or three piece valve boxes with cast iron covers. Valve boxes shall <br />be provided with suitable heavy bonnets and extend to an elevation at or slightly above the valve <br />bonnet. The barrel shall be one or two-piece, screw type, having 5 -1/4 inch shaft. Covers shall have <br />"WATER" cast into the top for all water main. All valves shall have actuating nuts extended to within <br />six inches of the top of valve box cover. All valve boxes shall be set in a square concrete valve box <br />bonnet in accordance with the Drawings. <br />PART 3 - EXECUTION OF WORK <br />3.01 Gate valves shall be installed as typical sections of the pipeline. The requirements for pipeline <br />foundation and backfill shall be followed in all regards when installing buried service gate valves. <br />3.02 Care shall be taken so that the valve box does not transmit loads directly to the valve body. Valve boxes <br />shall be installed perpendicular and flush with the ground surface as shown on the Plans. <br />3.03 All gate valves shall be mechanically restrained to the attached pipe sections. Pipe sections both <br />upstream and downstream of each valve shall be restrained the minimum required length as that shown <br />for a plug in the Restraint Length Detail on the Drawings. <br />END OF SECTION <br />02514 — Gate Valves <br />02514- 2 <br />