SE-4300. Speakman SE-4300 GravityFlo® Portable Eye Wash Speakman® GravityFlo® portable Eye-Wash units are the industry's only gravity-fed portable Eye-Washes that offers an optional side fitting drench hose for spot body washing. The SE-4300 has a 20 gallon capacity tank which provides a run time in excess of the ANSI Z328.1 required 15 minutes while offering an exceptional performing spray. A simple pull of an elastomeric strap activates the unit and provides hands free operation. The integral drain allows flushing fluids to be contained avoiding slip hazards. The SE-4300 meets the ANSI Z385.1 standard.