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 removable cartridge for a low or zero water urinal outlet comprises a body comprising a side wall including one or more locking projections projecting out from the wall. One or more resilient elements are provided in the wall and each resilient element includes one of the locking projections.

A drainage fitting (10) is described. The drainage fitting (10) comprises a housing (12) adapted to be inserted into a drainage outlet, the housing defining a housing inlet (14) and a housing outlet (16) and a one way valve (18) adapted to be received within the housing (12). The one way valve (18) has a body defining a valve inlet (22), a valve outlet (24) and a valve passageway (26), the passageway (26) providing fluid communication between the housing inlet (14) and the housing outlet (16). The drainage fitting (10) further comprises a fitting insert (28) adapted to be located in the housing inlet (14), the fitting insert (28) defining an insert portion (30) adapted to extend through the valve inlet (22) and into the valve passageway (26). In the presence of a negative pressure differential, air can pass through the valve (18) to relieve the pressure differential, but in the event of a positive pressure differential, the insert portion (30) prevents the one way valve from inverting to relieve the pressure differential.

An odor-trap device (1) for in particular flushing-water-free sanitary devices, for example urinals, comprises an outflow element (2) with a sealing wall (3), and also comprises a sealing membrane (4), which is in sealing contact with the sealing wall (3) in a closure position and, in the presence of a liquid, such as urine, is pushed away from the sealing wall (3) from the closure position into an open position, as a result of which a gap (19) is formed between the sealing membrane (4) and sealing wall (3), it being possible for the liquid to be led away through said gap, and further comprises a mounting element (5) for mounting the sealing membrane (4) in relation to the sealing wall (3). The odor-trap device (1) is characterized in that the seating membrane (4) has a seating surface (6) which runs substantially parallel to the sealing wall (3), wherein the sealing surface (6) butts against the sealing wall (3) substantially with surface-area contact, or wherein the sealing surface (6) is spaced apart from the sealing wall (3) such that the liquid film which is present, at least in part, between the sealing wall (3) and the sealing surface (6) provides a force of adhesion between the sealing wall (3) and seating surface (6).

An odor-trap device (1) for in particular flushing-water-free sanitary devices, for example urinals, comprises an outflow element (2) with a sealing wall (3), and also comprises a sealing membrane (4), which is in sealing contact with the sealing wall (3) in a closure position and, in the presence of a liquid, such as urine, is pushed away from the sealing wall (3) from the closure position into an open position, as a result of which a gap (19) is formed between the sealing membrane (4) and sealing wall (3), it being possible for the liquid to be led away through said gap, and further comprises a mounting element (5) for mounting the sealing membrane (4) in relation to the sealing wall (3). The odor-trap device (1) is characterized in that the seating membrane (4) has a seating surface (6) which runs substantially parallel to the sealing wall (3), wherein the sealing surface (6) butts against the sealing wall (3) substantially with surface-area contact, or wherein the sealing surface (6) is spaced apart from the sealing wall (3) such that the liquid film which is present, at least in part, between the sealing wall (3) and the sealing surface (6) provides a force of adhesion between the sealing wall (3) and seating surface (6).

The invention relates to an odor trap (31) for a transport conduit (10) with a division into a main branch (11) and a side branch (12). The odor trap comprises a mounting part (32) for releasable mounting in the side branch, and a membrane (33) of elastic material which comprises a first membrane part (33) to be received in the side branch (12) and a second membrane part (34) to be received in the main branch (11). The second membrane part (34) lies at an angle relative to the first membrane part (33). The membrane is at least partially movable under pressure of a fluid from a closing position, in which the membrane closes the passage of the main branch to the fluid, to a position allowing passage in which the membrane leaves clear the passage of the main branch for the fluid. The invention also relates to a system of a transport conduit (10) with a division into a main branch (11) and a side branch (12) and an odor trap (1) according to the invention.

The invention relates to an odor trap (31) for a transport conduit (10) with a division into a main branch (11) and a side branch (12). The odor trap comprises a mounting part (32) for releasable mounting in the side branch, and a membrane (33) of elastic material which comprises a first membrane part (33) to be received in the side branch (12) and a second membrane part (34) to be received in the main branch (11). The second membrane part (34) lies at an angle relative to the first membrane part (33). The membrane is at least partially movable under pressure of a fluid from a closing position, in which the membrane closes the passage of the main branch to the fluid, to a position allowing passage in which the membrane leaves clear the passage of the main branch for the fluid. The invention also relates to a system of a transport conduit (10) with a division into a main branch (11) and a side branch (12) and an odor trap (1) according to the invention.

An apparatus for a urinal is described. The apparatus comprises a plate member adapted to form a seal with a urinal outlet, the plate member defining a throughbore permitting the passage of liquid, in use, from the urinal to a soil pipe and a diaphragm located in the plate member throughbore, the diaphragm adapted to permit the passage of liquid through the throughbore in one direction only from the urinal to the soil pipe.

A precious metal clay regeneration solution contains water and a liquid paraffin, in which an amount of the liquid paraffin is more than or equal to 0.12 parts by mass and less than or equal to 60 parts by mass with respect to 100 parts by mass of the water. A method for regenerating precious metal clay includes a step of bringing water and a liquid paraffin into contact with a solidified precious metal clay, in which an amount of the liquid paraffin is more than or equal to 0.12 parts by mass and less than or equal to 60 parts by mass with respect to 100 parts by mass of the water.

A siphon trap disinfection unit consisting of a copper/silver electrode coated on inside body of the siphon parallel to each other along the siphon in the area which water normally stands. A water level sensor to generate resistance between two electrodes and an electric controller circuit to generate ions by applying voltage between two electrodes and controlling the amount of current passing through this control circuit to generate enough concentration of copper and silver ion continuously in the water standing area of the siphon trap to remove and deactivate harmful bacteria's in this area.