02485.80 1107 Section 02485 - Hydrant and Appurtenance Materi als Description
02485.00 Scope - This Section includes the requirements for hydrants and hydrant appurtenances
for potable water systems. Materials
02485.10 Hydrants - Furnish hydrants that are dry-barrel conforming to AWWA C502, of standard
manufacture and of a pattern approved by the Agency. Hydrants shall be designed for a minimum working pressure of 150 psi. All Materials in contact with potable water shall conform to ANSI/NSF Standard 61, Drinking Water System Components - Health Effects, or equivalent.
02485.20 End Connections - The end connections shall be mechanical joint or flanged, m eeting the
requirements of AWWA C110 and AWWA C111.
02485.30 Hydrant Dimensions and Nozzle Features :
a.Hydrant Dimen sions - Barrels shall have a 7 inch minimum inside diameter. Hydrant length, measured from the bottom of the hydrant to the sidewalk ring, shall provide proper cover at each installed location. Valve openings shall have a minimum diameter of 5 1/4 inches .
b.Nozzle Features - Hydrants shall have two 2 1/2 inch diameter hose nozzles and one pumper nozzle to match the Agency's connection requirements. Fit nozzles with cast iron threaded caps with operating nuts of the same design and proportions as the hydrant stem nuts. Thread caps to fit the corresponding nozzles and fit with suitable neoprene gaskets of positive water tightness under test pressures. The direction of opening shall be counterclockwise and shall be clearly marked on the operating nut or hydrant top. Hydrants shall have O -ring stem seals. Interior and exterior painting of the hydrant shall conform to AWWA C502.
02485.40 Hydrant Extensions - Hydrant extensions shall be gray cast iron or ductile iron with an
inside diameter of at leas t 6 inches, and shall conform to the AWWA Standards for such castings. The drillings of the connecting flanges on the extensions shall match the drillings of the flanges on the hydrant. Hydrant extensions shall also include the necessary hydrant operating stem extensions.
02485.50 Traffic Flange - Provide hydrants with a traffic flange. Hydrants shall be equipped with
breaking devices at the traffic flange which will allow the hydrant barrel to separate at this point with a minimum breakage of hydrant parts in case of damage. Also provide, at this point, a safety stem coupling on the operating stem that will shear upon impact.
02485.60 Tie Rods - Tie rods shall be 3/4 inch diameter with threaded ends, galvanized according
to 02560.40 and conforming to 02560.30.
02485.80 Acceptance - Acceptance of hydrants and hydrant appurtenances will be according
to 00165.35 and this Section.
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Source: Oregon Standard Specifications for Construction, 2024 Edition. Pages 1173–1173 of 1,268. View official source ↗