This device is ideally deck-mounted next to a sink. When needed, simply swing the safety aid over the sink. When not in use, it swivels out of the way. Complete with two bright yellow heads, 1/2" IPS (Iron Pipe Size) male inlet, stay-open ball valve. No drain necessary since the device is mounted next to a sink. Left or right mounting. Self-adjusting regulator assures an even water flow rate of 2.4 gallons per minute. Counter top eyewash sign included. Eyewash is ANSI Z358.1–2009, SEI certified.