Backflow Prevention Device Selection

Degree of Hazard

Hazards shall be divided into the following three categories:

Minor - any cross connection or potential cross connection that constitutes only a nuisance, with no possibility of any health hazard;

Moderate - any minor hazard as defined in time (a) that has a low probability of becoming a severe hazard;

Severe/High - any cross connection or potential cross connection involving any substance that could be a danger to health.

Selection Guide for Backflow Prevention Devices