§ 7.5-125. Material specifications.

All materials used in the work including equipment shall be new and unused materials of a reputable U.S. manufacturer conforming to the applicable requirements of the specifications, and no materials shall be used in the work until they have been approved by the city.

(1)

Ductile iron pipe. Ductile iron pipe shall be designed in accordance with ANSI A21.50 (AWWA C150), latest revision, and manufactured in accordance with ANSI A21.51 (AWWA C151), latest revision. Wall thickness class shall be a minimum Class 50.

Ductile iron pipe shall have an outside asphaltic coating per ANSI A21.51 (AWWA C151), latest revision. Pipe shall have standard cement lining inside with asphaltic seal coat per ANSI A21.4 (AWWA C104), latest revision.

Pipe joints, except where restrained or flange joints are specified, shall be push-on or mechanical joint type conforming to ANSI A21.11 (AWWA C111), latest revision. Pipe shall be in eighteen-foot to twenty-foot nominal lengths with standard deflection pipe sockets. Where restrained joints are shown or specified on pipe larger than twelve-inch diameter the joints shall be "Lok-Fast," "Lok-Ring," or equal. Restrained joints for pipe sizes twelve (12) inches diameter and smaller requiring restrained joint construction may utilize "Fast Grip" gaskets as manufactured by American Pipe or an approved equal.

Where river crossing pipe is shown or specified, the pipe shall be "Flex-Lok Boltless Ball Joint Pipe" as manufactured by American Pipe or approval equal.

Where specified, flanged pipe shall meet ANSI A21.51 and be used with fittings meeting ANSI A21.53. (AWWA C153).

(2)

PVC pipe. All PVC pressure pipe used for temporary water mains shall be Class 200, DR 14 pipe rated at two hundred (200) psi working pressure.

(3)

Copper tubing for water service. House service pipe shall be copper service pipe, type K, soft temper, seamless copper tubing, conforming to Federal Specification WW-T-T00. Compression joints shall be used.

(4)

Steel casing pipe. Steel casing pipe shall be steel pipe conforming to A.S.T.M. Designation A-139, Grade B, electric fusion welded steel pipe. The pipe shall have a minimum tensile strength of thirty-five thousand (35,000) psi. Both the exterior and interior of the pipe shall have a coal tar varnish coating.

(5)

Pipe fittings. Fittings shall be ductile iron furnished in accordance with ANSI Specifications A21.53 (AWWA C153), latest revision, and shall have a minimum of two hundred fifty (250) psi pressure class rating. Joints shall be mechanical joint with ductile iron retainer glands conforming to ANSI Specification A21.11 (AWWA C111), latest revision. Ductile iron retainer glands shall be Mega-Lug glands as manufactured by EBAA Iron. All fittings shall be furnished with a cement mortar lining.

(6)

Butterfly valves.

a.

All butterfly valves shall be bubble-tight closing at the rated pressure with flow in either direction, and shall be satisfactory for applications involving throttling service and frequent operations or operations after long periods of inactivity. Valves shall meet the full requirements of AWWA Standard C504, latest revision for one hundred fifty (150) psi working pressure and shall be suitable for above ground or buried service. All interior ferrous surfaces of valves larger than twelve (12) inches shall have a special epoxy coating meeting the requirements of AWWA C550.

Valve bodies shall be equipped with integrally cast mechanical joint ends meeting ANSI A21.11 (AWWA C111). Mechanical joints shall be fitted with retainer glands with set screws on ductile iron pipe. Retainer glands shall be Mega-Lug as manufactured by EBAA Iron. Butterfly valves installed underground shall come equipped with the manual operator specified in the following paragraph.

b.

Manual operators shall be of the traveling nut, self-locking type and shall be designed to hold the valve in any intermediate position between fully open and fully closed without creeping or fluttering. Operators shall be equipped with mechanical stop-limiting devices to prevent over travel of the disc in the open and closed positions. Valves shall close with a clockwise rotation. Operators shall be fully enclosed and designed for buried operation. Provide extensions as necessary to bring the operating nut within eighteen (18) inches of the ground surface.

(7)

Gate valves. Valves twelve (12) inches and smaller shall be gate valves. These valves shall be non-rising stem design, iron body, bronze mounted with a compression, resilient seat manufactured in accordance with AWWA Standard C509, latest revision. Valves shall be designed for a minimum working pressure of two hundred (200) psi and shall have two-inch square operating nuts, except in meter vaults where handwheels shall be installed. Valves shall have non-rising stems, shall open when turned counter-clockwise and shall meet AWWA specifications for Class C valves. Valves with flanged connections shall conform to ANSI B16.1. Mechanical joints shall be fitted with retainer glands and set screws on ductile iron pipe. Retainer glands shall be Mega-Lug as manufactured by EBAA Iron. Gate valves shall be as manufactured by American Darling, Mueller, or M&H. Provide extensions as necessary to bring the operating nut within eighteen (18) inches of the ground surface.

(8)

Valve boxes. Each valve shall be provided with a valve box. Valve boxes for valves shall be approved standard cast iron, screw type adjustable-shaft boxes having a minimum shaft diameter of five and one-fourth (5¼) inches adjustable for the necessary depth. The casting shall be coated with two (2) coats of coal tar pitch varnish. The lids of all boxes shall bear the word "water." Boxes shall be equal to Russco Model 562-S with a five and one-fourth (5¼) inch cast iron drop cover. All off-pavement valve boxes shall have concrete collars and valve markers.

(9)

Air and vacuum relief valve assemblies. Air and vacuum relief valves shall be cast iron body and covers with bronze trim, stainless steel float, Buna-N-Seal, and shall be designed for a minimum working pressure of one hundred fifty (150) psi.

The valve shall be designed to exhaust large quantities of air during the filling period, and small quantities of air which collect in the line while operating under pressure. Acceptable manufactures of air/vacuum valves are Golden-Anderson, APCO or Val-Matic.

Valves between the water main and air relief valve shall be two-inch stainless steel ball valves. All air and vacuum relief valves are to be installed in standard meter boxes with gravel bottoms. Provide a minimum gravel layer thickness of twelve (12) inches.

(10)

Fire hydrants. All fire hydrants shall be designed and manufactured to comply with the latest specifications of the AWWA. They shall be designed for one hundred fifty (150) pounds working pressure. The hydrants shall be of simple design, easy to operate, effectively and positively drained and protected from damage by freezing, have bronze seat and drain ring and convenient for repairing and replacing parts.

Hydrants shall be equipped with one (1) four-and-one-half-inch diameter pumper nozzle and two (2) two-and-one-half-inch diameter hose connections, which shall have threads meeting the latest requirements of the state fire insurance commission. Hydrants shall have a three-way pentagonal operating nut, and shall open when turned counter-clockwise. Hydrants shall have a safety flange on the barrel and a safety coupling on the valve stem, to prevent damage to barrel and stem in case of traffic accident. Hydrants shall be either Mueller Company's Centurian Traffic Model, M&H Style Traffic Model, or American Darling Mark 73-1.

The construction to the main line shall be with mechanical joint locked hydrant tee equal to American Cast Iron Pipe Company A-10180. All fire hydrant branches shall be valved. Wherever possible the fire hydrant shall be connected to the gate valve by using a locked hydrant adapter equal to American A-10895. The connection at the base of the hydrant shall be mechanical joint with ductile iron retainer gland, for Class 150, centrifugally cast, six-inch ductile iron pipe. The valve opening shall meet the requirements of the AWWA specifications for four-and-one-half-inch hydrant. The valve, valve seat and inner working parts shall be easily accessible. The distance from the ground to the hose nozzle shall not be less than twenty-four (24) inches. The body of each hydrant shall be neatly painted with a safety yellow reflecting paint and the ears and bonnet painted silver.

Each hydrant shall be tested to two hundred (200) psi with the hydrant foot valve in the closed position. A second test will be conducted on the hydrant at system pressure and the hydrant foot valve in the open position. A cap with a bleed off port will be installed on one (1) ear of the hydrant to bleed of air and allow the hydrant barrel to fill with water. The hydrant will then be observed for signs of leakage.

(11)

Service saddles. Service saddles shall be Ford F202 with CC threads (three-fourths-inch single, one-inch dual.)

(12)

Pipe couplings. Pipe connections between new pipe and existing pipe shall be made with Dresser Style 90 long steel couplings for pipe sizes two (2) inches and below; use mechanical joint sleeves for pipe sizes above two (2) inches. Field joints shall be made to insure permanently tight joints under all reasonable conditions of expansion, contraction, shifting, etc.

(13)

Yokes. Yokes for three-fourths-inch services shall include iron bar Ford Y502P, ball valve Ford B94-223WR, dual check valve Ford HHS91-323 Dual.

(14)

Corporation stop. Corporation stop shall be Ford F1000 (three-fourths-inch single, one-inch dual).

(15)

Branch piece. One-inch × three-fourths-inch × seven and one-half-inch branch piece shall be Ford U48-43-7 ½, one-inch compression joint inlet × three-fourths-inch MIP outlet.

(16)

PVC casing pipe. PVC casing pipe used for long-side services shall be schedule 40, a minimum of one (1) inch larger in diameter than the service line, but no less than two (2) inches in diameter. Detection wire shall be placed on all non-metal casing pipes and service lines.

(17)

Meter boxes. The meter box shall be plastic and the lid shall be cast iron. The meter box shall be as manufactured by DFW; the lid shall be as manufactured by Kenflow.

(18)

Tapping valves. Tapping valves shall be M.J. Type, two hundred (200) psi minimum rating, acceptable manufactures include Mueller, M&H, and American Darling.

(19)

Tapping sleeves. Tapping sleeves shall be Ford Stainless Steel tapping sleeves with carbon steel flange.

(20)

Water meters. The developer shall install the meter box and yoke on all residential and commercial and industrial services in the three-fourths-inch and one-inch sizes. The city shall provide and install the meter after all fees are paid and service is requested. On larger size commercial and industrial services, the developer shall install the vault and all piping and valves. The city will provide the meter after all fees are paid. No water service will be provided until all required backflow prevention devices are in place.

(21)

Backflow preventers. Backflow preventers for residential services shall consist of a dual check valve and shall be installed by the developer as part of the yoke assembly. Backflow prevention devices for commercial services, as a minimum, shall consist of an ASSE approved double check backflow preventer installed by the developer immediately downstream of the meter assembly. Contact the city water department backflow prevention coordinator for a specific determination of backflow prevention requirements.

(22)

Valve markers. Valve markers shall be made of three thousand (3,000) psi concrete, and shall be four (4) feet long and four (4) inches on each side, with four (4) #4 reinforcing bars. The markers shall be set with an even number of feet between the center line of the valve and the center line of the aluminum disc in the top of the marker, and the distance in feet between the valve and marker shall be stamped in the marker at the time of setting.

(23)

Polyethylene encasement. Polyethylene film shall be manufactured of virgin polyethylene material conforming to ASTM Standard Specifications D-1248-78 Type I, Class A or C, Grade E-1. The polyethylene film shall have a minimum thickness of eight (8) mil. The polyethylene encasement material shall be provided in tube sizes adequate for the various size pipes.

(24)

Insulators for DIP in steel casing. Insulators shall be as manufactured by Cascade Waterworks Manufacturing Company or approved equal. Insulators for twenty-four-inch DIP carrier pipe shall be CCS-2580 and eight (8) inches in width. Insulators for twelve-inch DIP carrier pipe shall be CCS-1320 and eight (8) inches in width. Insulators for eight-inch DIP carrier pipe shall be CCS-905 and eight (8) inches in width. All insulators shall have a stainless steel shell. Insulators shall be located within two (2) feet of each end of the casing and spaced no more than ten (10) feet apart within the casing. The positioning of the casing insulators shall be centered for water mains.

(Ord. No. 32-98, § 1, 8-27-98; Ord. No. 50-98, § 1, 1-7-99)