SECTION 252:626-19-4. Water main design for systems providing domestic water only

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  This section applies only to water systems without full fire protection capabilities.
(1)   Sizing of mains. Size all water mains after a hydraulic analysis based on flow demand of not less than 1 gal/min per service connection. The minimum size of water mains is 2 inches in diameter.
(2)   Hydrants. Fire hydrants with pumper outlets shall not be connected to water systems or mains unless the system is designed to carry fire-flows.
(3)   Valves. Locate valves at not more than 1 mile intervals and at all branch lines from the main line.

[Source: Added at 18 Ok Reg 1612, eff 6-1-01; Amended at 25 Ok Reg 2304, eff 7-11-08]

                    
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