Self-contained gravity flow eye wash units use gravity to deliver water through dual spray heads. Units deliver over fourteen gallons (53 liters) of water for fifteen minutes, thus complying with the provisions of ANSI Z358.1-2004 for eye washes. Units have a rugged plastic tank that can be installed in a wide variety of locations. These units are ideal for use where a continuous supply of potable water is not available, especially in remote plant areas, low traffic and/or low hazard areas.