A retrofit body for a faucet that provides an airgap vent is disclosed. The retrofit body may work with any faucet where the faucet body projects through a countertop. The airgap vent is in fluid communication with a drainpipe and a wastewater stream from an appliance.

A faucet that can be equipped with an air gap device, which includes a base, a main body and a control valve, wherein a chamber is formed inside the base, and an air gap device is arranged in the chamber accordingly. The main body is set on the top edge of the base, and the control valve is set inside the main body; a gap is formed between the base and the main body, the gap communicates with the chamber, and the air enters or leaves the chamber through the gap. The overall appearance of the faucet has no visually attractive vents, so the integrity of the appearance can be maintained.

An anti-backflow plumbing fitting (10) includes an annular body (12) which bounds an interior area (20). The body includes a body outlet (28) and a plurality of cup portions (40) each of which includes an inlet opening (46). An annular body side wall (22) includes at least one radially extending side wall air gap (36). Each cup portion further includes a pair of angularly disposed cup air gaps (54). An inlet end wall (30) includes a plurality of body flow inlets (52) which are each associated with a respective cup portion. Each body flow inlet underlies a respective cup portion and is elongated in aligned relation with each cup air gap, to enable liquid to flow from the respective inlet opening of a cup portion into the interior area. The inlet end wall is sloped and includes a plurality of drain holes (66, 68) therein. A plurality of vanes (60) extend in the interior area intermediate of immediately adjacent body flow inlets.

A WC cistern (1) with a wall (2) which forms a substantially cuboidal water tank (3). An intake (5) with which the water tank (3) can be filled is guided through the wall (2). A shutoff valve (7) is arranged in the intake (5), the shutoff valve interacting with a switch-off device (8) which triggers the shutoff valve (7) when a switch-off level (14) in the water tank (3) is reached. An injector (15) is arranged in the water tank (3) in a construction space (13) above the switch-off level (14). The outflow-side outlet (16) of the injector (15) is led out of the water tank (3).

A faucet that can be equipped with an air gap device, which includes a base, a main body and a control valve, wherein a chamber is formed inside the base, and an air gap device is arranged in the chamber accordingly. The main body is set on the top edge of the base, and the control valve is set inside the main body; a gap is formed between the base and the main body, the gap communicates with the chamber, and the air enters or leaves the chamber through the gap. The overall appearance of the faucet has no visually attractive vents, so the integrity of the appearance can be maintained.

An anti-backflow device and a bidet are provided. The anti-backflow device includes a housing, an anti-siphon member, and a non-return assembly. A top of a water-passing chamber of the housing is provided with a vent. A bottom of the water-passing chamber is provided with a water inlet. A side wall of the water-passing chamber is provided with a water outlet. A sealing sheet of the anti-siphon member is movable to block the vent. The non-return assembly allows water to flow through the water inlet in only one direction.

An air gap adapter for use with a water treatment faucet constructed and arranged for being mounted in a standard countertop faucet opening. The adapter includes an adapter base with an underside, defining a base throughbore for a standard faucet inlet nipple, having an RO retentate inlet port and a separate RO retentate outlet port. A cone insert has a platform covering at least a portion of the base, and a cone formation vertically projecting from the platform and being in fluid communication with the inlet port. An outlet opening is on the cone formation in fluid communication with the outlet port. An adapter cover disposed over the cone insert and the base includes a cone cover portion and a base cover portion, as well as a cover throughbore in registry with the throughbore. The adapter is constructed and arranged to be optionally mounted to a countertop with the faucet.

The disclosure provides a bidet washing apparatus equipped with a backflow preventer and methods for using the apparatus for preventing backflow of potentially contaminate water into the bidet washing apparatus. The methods utilizing the apparatus include applying water pressure on a backflow preventer in-line with a reservoir dispenser outlet; and releasing the water pressure on the backflow preventer, thereby allowing air to enter the reservoir dispenser outlet, wherein any contaminated water cannot be pulled back into the apparatus by reduced pressure.

This invention relates to a cistem (1010): More specifically, the invention relates primarily to concealed cisterns for toilets having integrated, and preferably adjustable, dual-flushing and odour extraction capability. The cistem (1010) includes a primary chamber (1020) for storing a volume of liquid, a liquid inlet (1026) for the primary chamber (1020) of the cistem (1010) with liquid, an air outlet (1028) for exhausting air from the primary chamber (1020) of the cistem (1010) operatively during filling; and a liquid outlet (30) through which liquid operatively stowed in the primary chamber (1020) of the cistem is dischargeable. The cistem (1010) further includes a fill valve for controlling liquid supply into the primary chamber from the liquid inlet (1026) and a flush valve (60) for controlling flow through the liquid outlet (30). The flush valve (60) comprises of a flush valve seat and a flush plug (1064) being moveable relative to the flush valve seat between an open position, wherein the flush plug (1064) is displaced from the flush valve seat thereby to open the liquid outlet (30) and enable the liquid in the primary chamber (1020) to discharge there through during flushing, and a closed position, wherein the flush plug (1064) is seated on the flush valve seat thereby to close the liquid outlet (30) and prevent the passage of liquid there through. The cistern (1010) also includes at least one actuator (1070) for actuating displacement of the flush plug (1064) from the closed position to the open position, and a controller (1123) for controlling one or more of a group of flushing conditions including: (i) flush type, wherein the cistem (1010) is adjustable between a single flush, dual-flush, on-demand flush or a combination of such flush type conditions; and (ii) flush time, wherein the time of the displacement of the flush plug (1064) by the actuator (1070) for each flush type condition is adjustable.

A decorative air gap cap cover is disclosed. An example embodiment can include: a hollow decorative shell configured with upper and lower interior regions relative to an internal ridge, the internal ridge configured to rest on an upper surface of a ring gasket installed around an air gap cap, the air gap cap being captured within the upper and lower interior regions of the hollow decorative shell; a fluid channel within the hollow decorative shell configured with an entry opening above the internal ridge and an exit opening below the internal ridge, the exit opening terminating at an exit port of the hollow decorative shell; and a top vent hole providing an air channel between the upper interior region and the exterior of the hollow decorative shell. An embodiment can also include an auxiliary fluid channel configured with an entry opening below the internal ridge and an exit opening below the internal ridge.