A self-supporting vacuum plumbing assembly for attaching a plumbing fixture to a vacuum-assist waste removal system may include an accumulator associated with the plumbing fixture for receiving and holding wastewater from the plumbing fixture. A wastewater outlet conduit, an air intake conduit, and a sensor conduit are configured with the accumulator as a unit, the unit being substantially rigid sufficiently self-supporting to be transportable in a peripherally frameless configuration.

A vacuum toilet system including a toilet bowl, a wastewater tank under vacuum, an ejection valve for ejecting air from the wastewater tank, means for monitoring the frequency of activation of the ejection valve, and a sensor for activating the ejection valve.

An example vacuum-assisted toilet includes a toilet bowl including an outlet. The outlet of the toilet bowl is fluidly coupled to a first flush valve, for example, using a first pipe. The first flush valve is fluidly coupled to a second flush valve that is positioned downstream from the first flush valve. For example, the first flush valve may be fluidly coupled to the second flush valve using a second pipe. The second flush valve is fluidly coupled to a vacuum source. The vacuum source may include, for example, a holding tank having a vacuum pressure therein, a vacuum pump, or any other suitable vacuum source.

A drainage device is provided. The device includes a novel floating surface drain or skimmer to manage draining of liquid, such as draining of water from stormwater impoundment ponds or structures.

The invention relates to a mobile sanitary device, in particular for a rail vehicle, comprising a vacuum toilet, a flush button, a power supply, a control device, and a control unit. In particular, the invention relates to a mobile sanitary device comprising a vacuum toilet, a flush button, a power supply, a control device, and a control unit, the control unit comprising a standard circuit board for routing signals, having a standard interface comprising a vacuum toilet connecting means for connecting a vacuum toilet, a flush button connecting means for connecting a flush button, and a power supply connecting means for connecting a power supply, a configuration circuit board comprising a configuration interface having a first configuration connection means, wherein the vacuum toilet connection means, the flush button connection means, the power supply connection means, and the first configuration connection means are conductively coupled to each other, wherein the configuration interface is arranged such that the configuration circuit board is coupled to a control device, and at least one signal carried by the standard circuit board and/or by the configuration circuit board can be tapped, processed and/or driven by the control device.

A vacuum sewage system includes a sump pit for receiving sewage, a valve pit, a valve, a sensor-controller, a first sensor pipe, a sump breather and a second sensor pipe. The sensor-controller activates the valve so as to discharge sewage from the sump pit. The first sensor pipe communicates pressure to the sensor-controller as the level of sewage rises within the sump pit. The second sensor pipe communicates pressure to the sump breather to move the sump breather from a first state to a second state to prevent sewage from entering the sensor-controller and valve. Alternatively, the system may be provided with a single sensor pipe that communicates pressure to both the sensor-controller and to the sump breather.

A sewage discharge device detachably and hermetically connected to a sewage tank includes a drain pipe and a main box body. A drain control valve and a self-priming drain pump are provided inside the main box body. One end of the drain control valve is detachably and hermetically connected to the drain pipe. The other end of the drain control valve is detachably and hermetically connected to the self-priming drain pump. The self-priming drain pump is provided with a drain nozzle and a cleaning coupling. The drain nozzle is detachably and hermetically connected to a sewage pipe. The drain nozzle and the cleaning coupling protrude outside the main box body. The sewage discharge device of the present invention prevents users from contacting fecal matter and wastewater. Manual cleaning of the drain pipe is also eliminated, which is convenient to use.

A waste system is disclosed. In some embodiments, the waste system includes a vacuum cell, a flexible waste container, and a vacuum source. The flexible waste container may have at least one flexible membrane at an interface between the flexible waste container and the vacuum cell. The vacuum source may be configured to suction air out of the vacuum cell to generate a negative pressure in the vacuum cell. The vacuum source discharge is generally odorless as it is separated from the waste. This odorless discharge can enter occupied aircraft compartments. The negative pressure in the vacuum cell acts on the flexible waste container to generate a (second) negative pressure in the flexible waste container. The negative pressure in the flexible waste container acts on an interface between a toilet and the flexible waste container to pull waste from the toilet into the flexible waste container.

The present invention relates to an air admittance valve (AAV) that operates automatically at low pressures to selectively open and close an air passageway between an inlet and an outlet. The AAV comprises a valve body having a centrally disposed, internal valve chamber in communication with the ambient environment, and having a valve seat. The AAV includes a sealing member having a flexible diaphragm that is fastened to a support ring, the ring defining one or more lugs on an outer periphery thereof. The AAV further includes a cap member within which the sealing member may be disposed, such that the one or more lugs may interact with an interior surface of the cap. The sealing member may selectively seal or unseal from the valve seat in response to pressure differentials between the inlet and the outlet.

Provided is an automatic excretion disposal device (1) which is configured to automatically perform an excretion disposal of a person (P) to be cared, the device including: a cup (2) which is attached to a body of the person to be cared to receive excretion; a detection unit (3) which is configured to detect excretion in the cup; a feed water pipe which is configured to decompress cleaning water from a water supply (W) to a predetermined pressure and directly supplies the cleaning water, on the basis of detection result of the detection unit; a suction motor (30) which is configured to suck sewage generated when the body and inside of the cup are cleaned with the cleaning water supplied from the feed water pipe (R1). and to discharge the sewage to outside of the cup; a tank (10) which is configured to temporarily store the drainage sucked by the suction motor; and a drainage pump (20) which is configured to cause the drainage to forcibly flow out to a drainage piping connected to a sewer or a septic tank, while pulverizing solid matters contained in drainage in which the sewage stored in the tank is mixed with the cleaning water directly supplied from the feed water pipe.