3717-1-05.1(D) / Backflow prevention - air gap.
Critical Observed the air gap between a plumbing fixture and a piece of equipment that was not sufficient to prevent back siphonage of contaminated water.OBSERVED PREP SINK WAS DIRECT PLUMBED INTO DRAIN
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).PROVIDE PORPER AIR GAP DISTANCE AS BACKFLOW PREVENTION Correct By: 09-Jan-2018