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r <br /> d <br /> SECTION 02514 <br /> GATE VALVES <br /> PART 1 - SCOPE <br /> 1 . 01 GENERAL <br /> The work to be performed under this item shall include furnishing and installing gate valves as <br /> specified by the Engineer and as shown on the Plans. <br /> x <br /> 1 .02 REFERENCES <br /> ` Standards applicable in this Specification shall be: <br /> A . American Water Works Association (AWWA) <br /> it <br /> 1 . AWWA Cl l l -80 - Rubber-Gasket Joints for Ductile Iron and Gray-Iron Pressure Pipe <br /> and Fittings. <br /> 2 . AWWA C509-87 - Resilient-Seated Gate Valves for Water and Sewerage Systems. <br /> B . American Society of Testing and Material (ASTM) <br /> 1 . ASTM A126-84 - Gray-Iron Castings for Valves, Flanges and Pipe fittings. <br /> 1 .03 SUBMITTALS <br /> A . Shop Drawings - Prior to any fabrication or installation work, the Contractor shall <br /> furnish to the Engineer, for review and approval five (5) sets of shop drawings for the <br /> following items. All drawings shall be reviewed, approved and stamped by the Contractor <br /> pursuant to the provisions of the General Conditions. <br /> 1 . Gate Valve <br /> 2 . Valve Box <br /> PART 2 - MATERIAL <br /> 2 .01 GATE VALVES (SIZES 4" TO 12") <br /> Gate valves shall be of the solid wedge type with resilient seats . Gate valves shall be mechanical <br /> jointed and meet the requirements of AWWA C509-87. <br /> Valves shall be iron bodied, bronze mounted, utilizing "O-ring" seals. Resilient seat shall be applied <br /> to the gate and shall seal against an epoxy coated metallic surface. <br /> The stem shall be of the non-rising type, operated by a standard AWWA, 2-inch wrench nut. All <br /> valves shall open to the left, using a counterclockwise motion. The stem shall be sealed with a dual "O- <br /> ring" system designed such that the seal above the stem collar can be replaced with the valve <br /> under pressure in the fully open position. <br /> 02514 — Gate Valves <br /> 02514- 1 <br />