Universal installation box for use in dryer vent systems and in water supply and drain systems

Claim 1

A universal box for use selectively with dry-vent and water supply-drain systems; siad box having top and bottom walls joined by a pair of side walls and a rear wall, and a substantially open front; said box including a plurality of knock-outs located in the side, bottom, top and rear walls; a certain, at least, of said knock-outs being removable for the reception in said box of a vent means; and others of said knock-outs being removable for the reception in said box of water supply valve means and drain means; whereby when said box is selected for use in a dryer-vent system only said certain knock-out is removed and whereby when said box is selected for use in a water supply-drain system only said others of said knock-outs are removed; and drain means located in the said bottom wall when the said knock-out for said bottom wall is removed; and including supply valve means located in at least a selected wall when the said knock-out for the said selected wall is removed; said drain means being adapted to receive a hose discharging waste and including a test seal washer, said washer having a top surface and a bottom surface and comprising a blank of relatively stiff material to cover the discharge end of said hose, said blank having a groove in the said top surface and initially extending only part way therethrough and configured to the outer periphery of the discharge end and slightly smaller than said outer periphery, and a plurality of other grooves in the said top surface and extending radially from said first mentioned groove towards but short of the outer periphery of said blank and initially extending only part way through said blank; whereby when all of said grooves are extended clear through said blank, said blank is provided with a central circular opening surrounded by a plurality of gripping segments and said hose may extend through said blank and be gripped by said gripping segments.