3717-1-05.1(D) / Backflow prevention - air gap.
Critical Corrected During Inspection Observed the spray nozzel in the dishroom without a proper air gap. Person-in-charge was able to raise the hose. Observed the air gap between a plumbing fixture and a piece of equipment that was not sufficient to prevent back siphonage of contaminated water.
To prevent contamination, 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 one inch (25 millimeters).