A one-piece shower waste includes a drain cover and a trap connected to the drain cover. The trap is a waterless flexible membrane trap arranged to allow passage of fluids from the drain cover through the trap and to prevent passage of fluids through the trap towards the drain cover.

The present invention provides valve assembly for use in a floor drain. In various embodiments, the valve assembly comprises a substantially cylindrical seal frame, the seal frame defining a seal frame wall and at least one support wall extending in the longitudinal direction of the seal frame, a flexible sealing member located proximate a distal end of the seal frame, and an attachment tab configured to secure the flexible sealing member to the seal frame, wherein the seal frame and the support wall are further configured to create a resting deflection of the flexible sealing member, such that fluid may flow through the valve assembly in one direction, and the flow of gasses through the valve assembly is prevented in the opposite direction.

A backflow valve assembly for preventing gas and backup waste from escaping a floor drain includes a tube that is configured to fluidically couple to a drain line. A pipe is coupled to and axially positioned in the tube. The pipe has upper and lower ends that are closed. At least one gasket is coupled to an inner surface of the pipe and defines upper and lower chambers. Penetrations are positioned through the pipe to allow flow of gasses and liquids into the pipe. First and second balls, which are less dense than water, are positioned in the upper and lower chambers, respectively. The first ball prevents escape of the gasses from the tube. The first ball floats to open the gasket to permit the flow of the liquids to the drain line. The second ball floats to close the gasket to prevent escape of waste from the tube.

A waterless trap for use in a drain assembly includes flow enhancing features to promote the vortex water flow of water received in the trap, an improved sealing arrangement to enhance the seal between a seal member and the housing to inhibit sewer gas leaks from an attached drain pipe by maintaining an evaporation barrier that assists in retaining water in a corresponding p-trap, and a plurality of air passages can allow the trap seal to open with ease when the drain pipe is pressurized. These features may be used in combination with one another or may be independently employed.

The present invention provides valve assembly for use in a floor drain. In various embodiments, the valve assembly comprises a substantially cylindrical seal frame, the seal frame defining a seal frame wall and at least one support wall extending in the longitudinal direction of the seal frame, a flexible sealing member located proximate a distal end of the seal frame, and an attachment tab configured to secure the flexible sealing member to the seal frame, wherein the seal frame and the support wall are further configured to create a resting deflection of the flexible sealing member, such that fluid may flow through the valve assembly in one direction, and the flow of gasses through the valve assembly is prevented in the opposite direction.

The present invention relates to a reinforcement valve for preventing a backflow in a drain trap, which can be additionally installed inside a drain trap, which can perform the air backflow phenomenon pre-contributing to the quality of the quality of the drain trap and to performance improvement thereof, and which always has the best backflow blocking function regardless of a strong air pressure generated inside the drain trap and any change thereof. A conventional drain trap has a water gathering portion (20) formed beneath a trap body (10); an inflow-side drain tube (30) and a discharged-side drain tube (40) are connected to one side and the other side thereof, respectively, such that draining occurs therethrough; a blocking membrane (60) is configured between the water inflow opening (31) And the water discharge opening (41); and a water drain hole (51) is bored between the blocking membrane (60) and the bottom surface inside the trap body (10). Th e present invention is configured by installing a backflow-preventing reinforcement valve (100) on the front side of the blocking membrane (60), in which the water drain hole (51) is formed, such that, when water is drained from the corresponding household, the same is automatically opened by the water pressure, thereby allowing water to drain, and, when water draining is completed, the same is automatically closed by self-weight, thereby guaranteeing, through control, that, even if a strong air flow is introduced into the drain trap, no backflow of air occurs.

An in-drain sealing apparatus for being positioned in a drain pipe with an interior surface where the positioning is below a surface mounted grate in a room area. The drain sealing apparatus includes a connector ring defined by a center axis, a lower edge and a peripheral surface, the connector ring positioned in the drain pipe below the grate with a first cylindrical space defined between the drain pipe interior surface and the connector ring peripheral surface. A sealing member is positioned in the first space for sealing the first cylindrical space between the peripheral surface of the connector ring and interior surface of the drain pipe for preventing access from the drain pipe to the room area through the region between the connector ring and the drain pipe. A normally close sealing device is coupled to the connector ring whereby liquid flowing through the grate area into the drain will cause the normally closed sealing device to open allowing the liquid into the drain pipe and then return to its normally closed position when liquid ceases to flow through into the grate.

The present invention relates to an drain insert arrangement for a building having a drain pipe, comprising a connector (2) having an elongated hollow drain pipe insert (21) having a lower end (23) for insertion into a drain pipe and an upper end (22), a sealing flange (24) for creating a seal against a floor surrounding the drain pipe, the sealing flange (24) further being arranged on said upper end (22) and extending radially from the insert (21), the connector further comprising at least one deformable element (25, 21) arranged on the drain pipe insert (21), and a locking mechanism (27) which is configured for cooperating with a corresponding locking mechanism in a valve which can be mounted in the connector thereby locking the valve in place inside the drain pipe insert (21) of the connector. The invention also relates to a drain insert arrangement system.

A backflow valve assembly for preventing gas and backup waste from escaping a floor drain includes a tube that is configured to fluidically couple to a drain line. A pipe is coupled to and axially positioned in the tube. The pipe has upper and lower ends that are closed. At least one gasket is coupled to an inner surface of the pipe and defines upper and lower chambers. Penetrations are positioned through the pipe to allow flow of gasses and liquids into the pipe. First and second balls, which are less dense than water, are positioned in the upper and lower chambers, respectively. The first ball prevents escape of the gasses from the tube. The first ball floats to open the gasket to permit the flow of the liquids to the drain line. The second ball floats to close the gasket to prevent escape of waste from the tube.

The present invention provides valve assembly for use in a floor drain. In various embodiments, the valve assembly comprises a substantially cylindrical seal frame, the seal frame defining a seal frame wall and at least one support wall extending in the longitudinal direction of the seal frame, a flexible sealing member located proximate a distal end of the seal frame, and an attachment tab configured to secure the flexible sealing member to the seal frame, wherein the seal frame and the support wall are further configured to create a resting deflection of the flexible sealing member, such that fluid may flow through the valve assembly in one direction, and the flow of gasses through the valve assembly is prevented in the opposite direction.