attic tank

attic tank

[′ad·ik ‚taŋk]
(building construction)
An open tank which is installed above the highest plumbing fixture in a building and which supplies water to the fixtures by gravity.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

attic tank

An open tank which is installed above the highest plumbing fixture in a building (e.g., in the attic) and which supplies water to the fixtures by gravity; the filling of the tank is controlled by a float valve.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
A couple of minutes per day of riding a bicycle to power a water pump could fill it, and then the attic tank could simply feed the plumbing throughout the day.
On hot summer days with no wind when the attic tank was low on water, we climbed up onto the windmill platform and turned the big wheel by hand.
Your kitchen sink is connected, via a pipe, to the rising main, hence it's safe to drink that water, while the other taps and connections, including the hot water tank, are supplied by a low-pressure, gravity-fed system from the attic tank.
Annie Mitchell, of Oxford, cracked the pipe, causing gallons of water from the attic tank to spray all over her.