A visual indicator for denoting a fluid level in a throat portion of a waterless urinal cartridge is presented. The visual indicator comprises a fluid level indicator disposed in the throat portion of the cartridge. As material buildup occurs inside the cartridge, a corresponding rise in the fluid level in the throat of the cartridge may be seen relative to the indicator, indicating when the cartridge will need replacement. The visual indicator may comprise markings that indicate the level of fluid within the throat portion, reactive materials, or an electronic reader. The fluid level indicator may also be made visible by ultraviolet radiation.

A fluid inlet portion for a waterless urinal cartridge is presented. The fluid inlet portion comprises to fluid director comprising a non-linear surface proximate a throat portion of the cartridge formed to impart a horizontal velocity component to fluid flowing through the throat portion of the cartridge to reduce vertical turbulence within the fluid. The fluid director can be formed so that it is in fluid communication with at least part of a fluid layer within the cartridge. The non-linear surface imparts a horizontal velocity component, thereby reducing disruption of the fluid layer by fluid flowing through the throat portion of the cartridge. The fluid director may be positioned within the cartridge to impart a substantially horizontal swirling motion to fluid within the cartridge. A fluid deflector proximate the fluid director can receive fluid from the fluid deflector and for re-directing the fluid from the fluid director.

Disclosed is a positive and negative pressure resistant sealing apparatus of a balance shaft two-way valve plate used for a drainage pipeline, which relates to the technical field of sewer line water seal protection. The apparatus comprises: a main body, a pressure conductor and a balance shaft two-way powered valve plate; the main body comprises a pressure conduction cavity and a drainage cavity, the pressure conduction cavity is located on one side of the drainage cavity, and the pressure conductor is arranged in the pressure conduction cavity of the main body. In the present invention, the effects of a pressure conduction membrane, a transmission connecting rod and the pressure conductor make it so that when the pressure at an upper end of a water seal is greater than the pressure at the lower end, a pressure membrane abuts against and holds in place the pressure conductor, causing the pressure conductor to have a downward movement trend, and causing the pressure conductor to push the transmission connecting rod, further causing the transmission connecting rod to abuts against and hold in place a supporting rod, preventing the supporting rod from forming a rotating trend to push the balance shaft two-way powered valve plate, further preventing the balance shaft two-way powered valve plate from driving an opening and closing valve plate to open, and thereby effectively preventing odor from spreading in the sewer pipeline.

Disclosed is a positive and negative pressure resistant sealing apparatus of a balance shaft two-way valve plate used for a drainage pipeline, which relates to the technical field of sewer line water seal protection. The apparatus comprises: a main body, a pressure conductor and a balance shaft two-way powered valve plate; the main body comprises a pressure conduction cavity and a drainage cavity, the pressure conduction cavity is located on one side of the drainage cavity, and the pressure conductor is arranged in the pressure conduction cavity of the main body. In the present invention, the effects of a pressure conduction membrane, a transmission connecting rod and the pressure conductor make it so that when the pressure at an upper end of a water seal is greater than the pressure at the lower end, a pressure membrane abuts against and holds in place the pressure conductor, causing the pressure conductor to have a downward movement trend, and causing the pressure conductor to push the transmission connecting rod, further causing the transmission connecting rod to abuts against and hold in place a supporting rod, preventing the supporting rod from forming a rotating trend to push the balance shaft two-way powered valve plate, further preventing the balance shaft two-way powered valve plate from driving an opening and closing valve plate to open, and thereby effectively preventing odor from spreading in the sewer pipeline.

A drain pipe assembly for installation of a basin includes: a drain pipe which is inserted in a drain port formed in a base of basin and has a flange of which an upper end is caught by the drain port; and a fastening member which fixes the basin against the flange, wherein the fastening member pulls the drain pipe, which is exposed below the basin, in a downward direction, to upwardly press the basin, thereby fastening the basin and the drain pipe.

A drain pipe assembly for installation of a basin includes: a drain pipe which is inserted in a drain port formed in a base of basin and has a flange of which an upper end is caught by the drain port; and a fastening member which fixes the basin against the flange, wherein the fastening member pulls the drain pipe, which is exposed below the basin, in a downward direction, to upwardly press the basin, thereby fastening the basin and the drain pipe.

A P-trap plumbing connection is positioned within a housing and a method of installation involves mounting the housing either on a wall or within a wall. When this method is used the space below a sink or inside a cabinet is no longer occupied to the same degree by the p-trap and drain piping.

The invention relates to a self-disinfecting drain trap in wastewater drains, having an automatic cleaning through an electromagnetic oscillator and an automatic disinfection through heat, UV-C radiation, antibacterial coating, or ultrasound. The inner wall of the drain trap may be coated with a titanium dioxide nano-coating, on which a catalytic oxidizing reduction of organic substances that can be oxidized takes place, and microorganisms are killed. The titanium dioxide nano-coating may be activated through irradiation with at least one light source located inside or outside the drain trap. When the cleaning and disinfection functions are inactive, a retrograde microbial contamination of the barrier fluid is prevented both on the part of the wastewater drain as well as through the ambient air, through the oxidizing disinfecting effect of the titanium dioxide nano-coating.

The invention relates to a self-disinfecting drain trap in wastewater drains, having an automatic cleaning through an electromagnetic oscillator and an automatic disinfection through heat, UV-C radiation, antibacterial coating, or ultrasound. The inner wall of the drain trap may be coated with a titanium dioxide nano-coating, on which a catalytic oxidizing reduction of organic substances that can be oxidized takes place, and microorganisms are killed. The titanium dioxide nano-coating may be activated through irradiation with at least one light source located inside or outside the drain trap. When the cleaning and disinfection functions are inactive, a retrograde microbial contamination of the barrier fluid is prevented both on the part of the wastewater drain as well as through the ambient air, through the oxidizing disinfecting effect of the titanium dioxide nano-coating.

Disclosed is a positive and negative pressure resistant sealing apparatus of a balance shaft two-way valve plate used for a drainage pipeline, which relates to the technical field of sewer line water seal protection. The apparatus comprises: a main body, a pressure conductor and a balance shaft two-way powered valve plate; the main body comprises a pressure conduction cavity and a drainage cavity, the pressure conduction cavity is located on one side of the drainage cavity, and the pressure conductor is arranged in the pressure conduction cavity of the main body. In the present invention, the effects of a pressure conduction membrane, a transmission connecting rod and the pressure conductor make it so that when the pressure at an upper end of a water seal is greater than the pressure at the lower end, a pressure membrane abuts against and holds in place the pressure conductor, causing the pressure conductor to have a downward movement trend, and causing the pressure conductor to push the transmission connecting rod, further causing the transmission connecting rod to abuts against and hold in place a supporting rod, preventing the supporting rod from forming a rotating trend to push the balance shaft two-way powered valve plate, further preventing the balance shaft two-way powered valve plate from driving an opening and closing valve plate to open, and thereby effectively preventing odor from spreading in the sewer pipeline.