A water saving dual flush system of valving assembly for toilet
water-closets of the gravity flow type. This system of valving is designed
to fit existing hardware in typical water-closets and convert single flush
designs to dual flush water saving systems. Comprised of a flapper type
bottom valve having a port located at a position above the discharge pipe
of a common water-closet. The port edge of the bottom valve being molded
to receive and mate to a flanged pipe end and thereby forming a watertight
seal between the pipe and the bottom valve. A floatation collar being
attached about the outside of the pipe. The upper end of the pipe having a
upper valve seat sleeve attached. The upper valve seat sleeve being a
slip-fit sleeve with a valve seat formed on the upper end and having a
hinge portion incorporated on one side. The upper valve seat sleeve hinge
is designed to mate to the upper valve and form together a hinged mount.
The bottom end of the valve seat sleeve being flared to retain the
floatation collar. The upper valve having a mating hinge mount attachment
point to mate with the upper valve seat sleeve hinge. The upper valve
being non-buoyant (depending on the application). The upper valve having a
chain attachment point for flush actuation connection to the flush arm and
thereby to the flush handle. The chain also having attached a float by
which the upper valve is operatively adjusted.
