(a) The contractor shall furnish and install all gate valves, valve-boxes and valve chambers as called for on the plans. Valves shall conform in all respects with American Water Works Association Specifications C-500 for Gate Valves for Ordinary Water Works Service. The valves shall be R.D. Wood or an approved equal.
(b) All gate valves three inches and larger shall be of the iron-body bronze-mounted type and shall have a nonrising bronze stem, shall open by turning clockwise and shall be operated by a two-inch square operating nut. Nuts shall have an arrow and the word “OPEN” cast thereon to indicate the direction of turning to open the valve. The valve ends shall be mechanical joint or “Bell-Tite” joint type.
(c) All gate valves three inches to sixteen inches in size shall be of the “double disc parallel seat” or “double disc inclined seat” type. All gate valves twenty inches and over in size shall be of the “double disc parallel seat” type. The discs on all valves over three inches in size shall be forced to their seats after the valves are closed by wedges or another acceptable device.
(d) All two-inch gate valves, or smaller, shall be of the best quality brass or bronze, double disc parallel seat, nonrising stem, with screw ends and shall open by turning clockwise.
(e) All twenty-inch and twenty-four inch gate valves shall be provided with four-inch bypass valves, and all thirty-inch to forty-eight inch valves, inclusive, shall be provided with six- inch bypass valves located below the center of the valves.
(f) All gate valves sixteen inches and under shall be constructed to work vertically. Gate valves twenty inches and larger in size shall be constructed to work horizontally.
(g) The manufacturer of the valves to be used shall furnish a sworn statement that the inspections and tests required by the A.W.W.A. Specification C-500 have been made and performed and that the valves furnished comply with that specification in all respects.
(h) Gate valves two inches to twelve inches in size, inclusive, shall be installed with valve boxes of appropriate length and design. Gate valves fourteen inches in size and larger shall be installed in valve chambers.
(i) Valve-boxes shall be Buffalo-Type, either two or three piece, cast-iron, with a five and one-quarter screw-type shaft. Each box shall be complete with a lid with the word “WATER” cast thereon. Boxes furnished shall be Eddy Company, catalog number F-2450, or equal. The lids furnished shall be Eddy Company, catalog number F-2494, or equal. Valve-box bases shall conform to the size of the valves.
(j) Air cocks or air vent valves shall be two inches in size and may be Darling Company, No. 1081, Farman Brass Works, No. W-4695, or their equal.
(Ord. 352. Passed 10-22-62.)