A. Pipe for Water Mains.
1. All proposed water main and water service piping plans must be approved by the Water Department prior to construction.
2. The Water Department will be notified at least 1 week prior to commencing construction.
3. The contractor shall furnish, lay, join, test and disinfect all pressure pipe, fittings, and appurtenant materials and equipment, all as indicated on the drawings and as herein specified.
4. All joints on bends, gates and castings shall be mechanical joint. All mechanical joints shall use approved retaining system, IE: Mega-Lug, Grip Ring, or equivalent.
5. Pipe shall be ductile iron super bell-tite joint, Class 52, double cement lined, bituminous coated, 18-20 foot lengths.
6. Unless otherwise indicated or specified, ductile iron pipe shall be at least Class 52 thickness for pipe 12 inches in diameter and smaller and at least Class 50 thickness for pipe larger than 12 inches in diameter.
7. Pipe for use with sleeve type couplings shall be as specified above except that the ends shall be plain (without bells or beads). The ends shall be cast or machined at right angles to the axis.
8. All pipe and fittings shall be tested at the foundry as required by the standard specifications to which material is manufactured. The contractor shall furnish upon request to the Water Department sworn certificates of such tests.
B. Valves. Gate valves open left. Gate valves for pipe up to and including 12-inch diameter shall be resilient seat type valve designed for underground use. Each buried valve shall be provided with a valve box. Valve boxes shall be of rough, even-grained cast iron and of the adjustable, slip, heavy-pattern type. They shall be designed and constructed to prevent the direct transmission of traffic loads to the pipe or valve. The upper or sliding section of the box shall be provided with a flange having sufficient bearing area to prevent undue settlement. The lower section of the box shall be designed to enclose the operating nut and stuffing box of the valve and shall be adjustable through at least 6 inches vertically without reduction of the lap between the sections to less than 4 inches.
C. Fire Hydrants. Hydrants open left.
1. Hydrants shall meet or exceed all aspects of AWWA C-502 for dry barrel fire hydrants in its latest revision.
2. Hydrant shall open left, with open direction arrow on bonnet.
3. Minimum hydrant bury shall be 5 1/2 feet.
4. Hydrant paint and color shall be Rustoleum Industrial Enamel Regal Red or equivalent.
5. Main valve shall be 5 1/4 inches minimum
6. Hydrant shall have two 2 1/2 inch hose nozzles 180 degrees apart and one 4 1/2 inch steamer nozzle all national standard thread. Operating nut shall be of the pentagon type.
7. Hydrant shall be traffic type connected at ground line by frangible cast coupling. Breakable bolts are not acceptable.
8. Hydrant shall have 2 drains 180 degrees apart and shall be bronzed bushed.
9. Elbow shall have 6-inch mechanical joint with accessories.
10. Hydrant extensions shall be able to be installed without need for excavation.
11. A set of disassembly tools shall be supplied by the manufacturer at no cost to the Town of Winchester, with the acceptance of any hydrant that is not currently in the system.
D. Fittings. Shall be compact, ductile iron, mechanical joint, cement lined or epoxy coated where applicable. Mechanical joint nuts and bolts shall be high strength, low alloy steel or equivalent.
E. Couplings. Shall be made from ductile iron or high quality gray iron. Gaskets shall be designed for use in water applications.
F. Tapping Sleeve and Valve. Tapping sleeves shall be a mechanical joint with outlet flange. Must be of cast, ductile iron or a full bodied stainless steel and must include a test plug so that valve and sleeve may be pressure tested before a tap is made. Rated working pressure for tapping sleeves up to and including 12 inch shall be 200 PSI, larger than 12 inches to be rated at 150 PSI.
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