These units may be used in low traffic areas, low hazard areas or where installation of plumbed equipment is not cost effective. 15 Gallon unit provides 10 usable gallons of water for effective rinsing of the eyes, face or body. Eyewash unit offers two spray heads with a flip-top dust covers, internal flow control and filter. Pressure regulator controls eyewash flow to 0.65 gpm for 15 minutes in 15 Gallon Unit. Drench hose features a single spray head with flip-top dust cover and a 6' reinforced PVC hose. Tank has built-in carrying handles, air intake fitting, pressure gauge and pressure relief valve.