EYE WASH STATION PORTABLE 6GAL OR 16GAL GRAVITY FLOW. Gravity Flow Eye Wash Station Portable 16 GAL Gravity Fed with Drain Hose. Eye wash wall units with specifically engineered designs, provide maximum flow, to insure fast, effective aid. Emergeny Eye wash Station Flow activated in less than 1 second. Gravity Flow times: 16 Gallon – over 15 minutes. Emergeny Eye wash Station Meets ANSI Z358 Standards.Gravity Flow Eye Wash Station – Meets OSHA regulations. EYE WASH