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ASSE/ANSI 1004-2024
Performance Requirements for Backflow Prevention Requirements for Commercial Dishwashing Machines
ASSE/ANSI 1004-2024 applies to the backflow prevention device used on the potable water supply connected to a commercial dishwashing machine. The backflow prevention device shall be one of the following in compliance with Section 1.2.2: (a) An air gap; (b) An air gap fitting; (c) An atmospheric type vacuum breaker; (d) A hose connection vacuum breaker; (e) A pressure vacuum breaker; (f) A hose connection backflow preventer; or (g) A spill-resistant vacuum breaker.
American Society of Sanitary Engineering [asse-sanitary]