A waterless urinal cartridge, for waterless urinals, includes a housing and a cover. The housing includes a waste reservoir configured to hold a predetermined volume of wastewater, and a drainage aperture configured so that an amount of wastewater exceeding the predetermined volume of wastewater flows through the drainage aperture to exit the housing. The cover is coupled to the housing and includes a sealing fluid reservoir having walls that define the waste reservoir and the drainage aperture, the walls of the sealing fluid reservoir form a containment perimeter with an open bottom so as to contain a sealing fluid floating on top of the predetermined volume of wastewater, and a plurality of fluid passages direct wastewater from the fluid bowl to the sealing fluid reservoir. The waste reservoir includes a fluid flow control feature that restrains wastewater movement within the waste reservoir in response to a change in vehicle dynamics.

The present invention has its application in the industry of manufacturing bathroom furniture, specifically in the industry of manufacturing urinals or dry urinals, that is, urinals or dry urinals that do not drag waste through water. The advantage of our valve with respect to the valves of the prior art, is that our water seal does not require dragging water; it is the urine itself that achieves the seal without the odor developed by the urine of the water seal returning to the users' space; it incorporates an additional seal of spheres the use of consumables in the product, such as sealing oil, scent pads, among others. Structurally, our invention consists of an outlet valve, in a waterless urinal, towards the drainage, to prevent the return of foul odors, characterized by comprising a hydraulic trap formed by a tank where a certain volume of urine is formed, a funnel that discharges the new urine into the bottom of the tank, and an upper valve where the seal is carried out by one or two spheres in their respective seats.

A hybrid flushing system for water free urinals is presented with a housing having a wall portion forming a cavity for receiving a cartridge. The housing also includes a flushing fluid inlet portion for receiving a flushing fluid and a flushing fluid directing portion configured to direct the flushing fluid. A cartridge for installation into a housing is presented, including a cartridge wall, a flushing fluid receiving portion and a flushing fluid directing portion to direct flushing fluid received to any portion to clean areas of the housing, the cartridge, and connected plumbing. Steps for cleaning a hybrid flushing system are presented with an act of directing a flushing fluid into an area, where the area is one of a cartridge for a hybrid flushing system, a housing for a hybrid flushing system, and a plumbing system connected with the hybrid flushing system.

A waterless urinal having a motion sensor that opens the drain valve. This sensor also turns on an internal venting fan that draws air from in front of the P trap, upwardly thru the fan, and downwardly to vent the air down the sewer after the P trap. The whole system can be operated by a solar-powered battery system making it well suited for use in off-grid locations, areas prone to drought or water shortage, mobile homes, rest stops, and stadiums.

A method for releasably securing a sink strainer in a drain hole of a sink by providing a lock nut having a split defined by a pair of opposed surfaces and a locking system comprising a pair of opposed tabs attached to the outer surface of the lock nut with one tab on one side of the split having a threaded hole spaced perpendicularly with respect to the opposed surfaces for receiving a threaded fastener and a second tab attached to the outer surface of the lock nut on the opposite side of the split in opposed spaced relationship to the first tab. The second tab having a hole in axisymmetric spaced relationship to the threaded hole with a diameter of sufficient size to allow a threaded fastener to pass therethrough, and a threaded fastener positioned within the axisymmetric spaced hole and arranged to pass through the hole in the second tab and securely engage the threaded hole in the first tab. When engaged, the threaded fastener holds the opposed surfaces in mating relationship during normal use, and when removed, provide for the lock nut to release from its position in response to application of an external force.

Provided is a drain trap that allows easy maintenance, yet has high durability with ability to prevent condensation. The drain trap includes a bottomed cylindrical main body portion 5 having a lateral wall 51 on which a receiving pipe portion 2 for receiving liquid and a discharge pipe portion 3 for discharging the liquid are formed, an attachable/detachable partitioning body 1 for partitioning an inside space 4 of the main body portion 5 into a reservoir space 7 and a discharge space 8, a lid portion 6 for closing the inside space 4 of the main body portion 5 and a sealing case 9 surrounding, under a sealed state, at least a portion of an outer surface of the main body portion 5 in which the reservoir space 7 is formed. An air gap 91 is formed between the sealing case 9 and the main body portion 5. The sealing case 9 and the main body portion 5 are formed transparent. The lid portion 6 is attachable/detachable when the sealing case 9 is attached to the main body portion 5.

A self-disinfecting water trap for use in a washbasin having a drain including a housing having a top part and a bottom part defining an interior space adapted for maintaining trapped water. The top part has a first opening configured to engage in a liquid tight manner with the drain of the washbasin, optionally via a hollow inlet pipe, and a second opening configured to engage in a liquid tight manner with a hollow outlet pipe for discharging waste water. The bottom part is adapted to receive and maintain an UVC light source in a liquid tight manner, wherein the UVC light source when in operation radiate the trapped water and the total interior space.

A self-disinfecting water trap for use in a washbasin having a drain including a housing having a top part and a bottom part defining an interior space adapted for maintaining trapped water. The top part has a first opening configured to engage in a liquid tight manner with the drain of the washbasin, optionally via a hollow inlet pipe, and a second opening configured to engage in a liquid tight manner with a hollow outlet pipe for discharging waste water. The bottom part is adapted to receive and maintain an UVC light source in a liquid tight manner, wherein the UVC light source when in operation radiate the trapped water and the total interior space.

The present disclosure provides a return gas prevention device for a drainage pipe, belonging to the technical field of drainage pipes. The device realizes two functions of water seal and a check valve simultaneously, as well as prevents gas channeling in a drainage process.

The present invention relates to a plumbing assembly for connecting a discharge connection of a fixture to a waste outlet, the assembly comprising a substantially rigid conduit trap portion (whether the trap portion forms a part of an S, P, U or J shaped conduit bend). The rigid conduit trap portion including an inlet and an outlet, and a substantially conformable or flexible conduit portion connectable to the rigid conduit trap portion at either of i) the rigid conduit trap inlet, or ii) the rigid conduit trap outlet. The rigid conduit trap portion and conformable or flexible conduit portion when assembled providing for a complete trap assembly.