Anti-back siphoning water supply valve and mixer

摘要: A low cost portable mixer-dispenser device connectable to a garden hose and supplied with potable water from municipal dispensing system in which non-contamination safety back flow check valve located at the inlet of chamber along vent therebeyond coacts therewith atmosphere point upstream solution mixing chamber. manual is outlet closure venting occurs when pressure on supply drops predetermined gauge below maximum degradation dilution ratio not tolerable for an aspirating jet pump that between nozzle, thereby serving dual function protecting against contamination preventing operation if becomes inadequate maintain proper mixture ratio.