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The Flow Expo is the largest trade show in the Western United States dedicated to Plumbing, Heating, Cooling and related industries. The Flow Expo is where thousands of professionals have been gathering for over 40 years to discover and discuss the newest in technologies, trends, services and code requirements. With over 136 exhibitors representing over 400 brands it has grown to become "THE" event of the year for the PHC trades in the West.