SECTION 310:257-9-15. Backflow prevention, air gap

Latest version.

An air gap between the water supply inlet and the flood level rim of the plumbing fixture, equipment, or nonfood equipment shall be at least twice the diameter of the water supply inlet and may not be less than 25 mm (1 inch).

[Source: Added at 23 Ok Reg 2358, eff 6-25-06]

                    
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