(A) All materials shall conform to the latest standards issued by the American Water Works Association and shall be NSF rated for potable water.
(B) Watermain pipe shall be either ductile-iron pipe or polyvinyl chloride pipe, unless directed otherwise by the village’s maintenance superintendent, as described in the following divisions.
(1) Ductile-iron watermain pipe shall be standard pressure Class 350 ductile-iron pipe, with push-on joints and cement lining, as described and manufactured in accordance with AWWA Standards C150 and C151. Gaskets must properly match bell configuration. Rubber gasket joints shall be in accordance with AWWA Standard CI 11. The pipe shall be cement lined per AWWA Standard C104.
(2) Plastic watermain pipe shall be shall be SDR-PR pressure rated PVC pipe with single gasket joints. The pressure rating shall be SDR-21. The PVC pipe shall generally conform to ASTM Standard D-2241. The joints shall be push-on compression joints with rubber gaskets generally conforming to ASTM Standards D-3139 and F-477. The joint shall have a built-in stop to maintain proper pipe end separation to allow for thermal expansion and contraction.
(C) (1) Fittings used with ductile-iron pipe shall be Pressure Class 350 psi ductile-iron fittings, with push-on joints and cement lining, as described and manufactured in accordance with AWWA Standards C110 or C153, and C111. Mechanical joint end connections and retainer glands may be required where site conditions require joint restraint. Tapped and solid plugs shall have set screws for securing plug in bell of pipe or fittings.
(2) Fittings used with PVC SDR-21 plastic pipe shall be ductile iron fittings, as described in division (C)(1) above, with transition gaskets to fit the smaller outside diameter PVC pipe.
(D) Gate valves shall be either resilient wedge type gate valves or double-disc type gate valves as described in the following divisions.
(1) Resilient wedge type gate valves shall be iron body resilient-seat gate valves manufactured in accordance with AWWA Standard C509. End connections shall be mechanical joint or push-on joint as necessary to meet the abutting pipe or fitting. The operating nut shall be two square inches. An arrow showing the direction in which the valve opens shall be cut in the operating nut. Valves shall open counter-clockwise. These valves shall be of the non-rising stem type. All internal parts shall be accessible without removing the main body from the pressure line. Valve body and bonnet shall be manufactured of cast iron and shall have a fusion bonded epoxy coating inside and out. Valve shall have a manganese bronze stem and “O” ring stem seals. Gates shall be a wedge shape design. Wedges shall be constructed of ductile iron, fully encapsulated in synthetic rubber except for the guide and wedge nut areas. Wedge rubber shall be molded and bonded to the ductile iron portion, and shall not be mechanically attached with screws or similar fasteners. Wedges shall seat symmetrically about the centerline of the operating stem, so that seating is equally effective regardless of direction of pressure unbalance across the wedge. The waterway shall be full size, smooth, and have no depressions or cavities in the seat area.
(2) Double-disc type gate valves, three inches through 48 inches in diameter, shall conform to the requirements of AWWA Standard C500. The gate valves shall be double disc, parallel seat valves. All valves shall be of the non-rising stem type unless otherwise shown on the drawings. The valve stem shall be made of bronze and the screw threads shall be accurately cut and worked smooth and true throughout the entire lift. The valve stem shall have a two-square inch opening nut. An arrow showing the direction in which the valve opens shall be cut on the opening nut. Valves shall open counter clockwise. Gate valves in exposed locations shall be fitted with appropriate handwheels unless otherwise specified.
(E) Valve boxes shall be adjustable, screw type, and made of best quality cast iron. Valve boxes for four-inch through 12-inch gate valves shall have a minimum five and one-quarter inch diameter shaft and consist of a base, bottom section, top section, and a lid. Minimum thickness of metal shall be three- sixteenths of an inch. Boxes shall be installed over the outside of all gate valves and shall be of length that can be adapted, without full extension, to depth of cover required. The word “water” shall be cast in the cover. A plastic centering insert shall be provided.
(F) Fire hydrants shall generally conform to the requirements of AWWA Standard C-502. These hydrants shall be the two-piece break-away type. Hydrants shall be equipped with two two and one-half inch hose nozzles and one four and one-half inch pumper nozzle. Outlets shall have national standard threads. The hydrant’s main valve shall open with watermain pressure and have a minimum opening of five-and-one-quarter of an inch. Inlet connections shall be as shown on the drawings. Inlet to hydrant shall be at a minimum depth of four feet, six inches, measured from the existing ground surface to the top of the barrel of the pipe. Hydrants shall be Mueller Super Centurian 2000 Fire Hydrants; or equivalent, as authorized by the village’s Maintenance Superintendent. Anchoring pipe and couplings shall be used to install each hydrant.
(G) (1) All service lines shall be either copper water tubing or polyethylene tubing, minimum one inch in diameter:
(a) Copper water tubing shall be Type K, soft temper for underground service, conforming to ASTM Standards B-88 and B-251. The pipe shall be marked with the manufacturer’s name or trademark and a mark indicative of the type of pipe. The outside diameter of the pipe and minimum weight per foot of the pipe shall not be less than that listed in ASTM Standard B-251, Table 2; and
(b) Polyethylene tubing shall be CTS tubing, made with PE-3408 material, with an SDR rating of 9, conforming to ASTM Standard D-2737.
(2) All taps for water services in plastic watermains shall be made using bronze, two-section service clamps, designed for use with plastic pipe.
(3) All corporation stops for one inch in diameter services shall be ground key corporation stops with a straight through design. Fabricated of brass, the inlet shall be AWWA taper thread and the outlet shall be a compression connection for CTS O.D. tubing, Mueller Model H-15008; or equivalent.
(4) All curb stops for one inch in diameter services shall be Mueller Oriseal III Model H-1504-2; or equivalent. These stops shall have top and port “O”rings for sealing, have a quarter turn check, and have compression connections for CTS O.D. tubing on both ends. The stops shall be quarter turn, with an integral foot piece. Each curb stop shall be set on a concrete pad, approximately 12 inches by 12 inches by two inches thick.
(5) Curb boxes shall be placed over all curb stops. They shall be cast iron extension type boxes with arch pattern base, designed to fit over the specified curb stop. The boxes shall be one or one and one-quarter of an inch in diameter, generally 48 inches in length when fully retracted and 60 inches in length with fully extended. Boxes shall be furnished with a combination cast iron lid and a pentagon plug.
(H) Blowoff valve assembly shall have materials as specified in Typical Blowoff Valve Assembly sketch attached.
(I) Rock for hydrant drains shall be coarse aggregate, gradation CA-1 or CA-3, complying with the provisions of the Standard Specifications for Road and Bridge Construction, IDOT.
(Ord. 97-7, passed 7-1-1997, § 5.17)