Abstract: There is an inflow pipe and an intermediate pipe and an outflow pipe forming a passageway there through. The intermediate pipe has an internal surface with a radius of curvature. The outflow pipe is coupled to the intermediate pipe. There is a baffle located within the passageway. The baffle has a lower extent which is a second distance from the first radius of curvature of the internal surface of the intermediate pipe. The second distance is less than the first distance of the radius of curvature of the intermediate pipe.

Abstract: The present invention relates to a siphon device with a bypass, comprising: a siphon upper section having a top coupling means for connecting to a drain outlet, a side drain opening having coupling means for connecting to a wastewater utility pipe, wherein the siphon upper section is adapted to enable a direct flow via the side drain opening and thereby to bypass a basin of the siphon, thus evacuating substantial volume of accumulated water directly into the wastewater utility pipe.

Abstract: A drain trap comprising a lid and bowl where the lid further comprises a central inlet flow tube which discharges into the bowl at a distance above the inner surface of the base of the bowl. Fluid entering through the flow tube and into the bowl fills the interior until the water level reaches the discharge opening to exit from the drain trap. Water flow is in the annular space between the inner surface of the bowl and the exterior surface of the tube.

Abstract: An in-line water trap located in the line of the flow of waste through a generally straight line or bend is provided for. Typically, the water trap comprises a fluid conduit having a first end, a second end and a passage between the first and second ends; and a vessel having a closed end, an open end and a skirt between the closed and open ends, the lobed vessel further having an inner surface defining an inner volume and an outer surface, the inner surface attachingly engaging an outer wall of the fluid conduit in so doing defining a flow path between the passage, the inner volume of the lobed vessel and the outer surface of the lobed vessel, in use, a fluid level inside the inner volume of the lobed vessel being substantially in communication with the second end of the fluid conduit to form a fluid seal.

Abstract: A trap for a catch basin, and means for mounting said trap to a catch basin wall, comprises a hollow trap body having an inner wall and an outer wall, and side walls joining the inner and outer walls. The trap body has a first aperture near the top of its inner wall, allignable with an outlet of a catch basin, and a second aperture at a lower level on said trap body than said first aperture. A mounting plate is secured to the inner wall of the trap body, and has an aperture allignable with the first aperture of the trap body. A retainer plate is provided, onto which the mounting plate can be mounted. The retainer plate also has an aperture allignable with the apertures on the mounting plate and trap body.

Abstract: A valve apparatus includes a housing, which defines an interior chamber, a baffle disposed in the interior chamber, and a volume of liquid. The housing includes first, second and third portions. The first portion includes first and second ports that communicate with the interior chamber. The second portion is spaced from the first portion along a longitudinal axis. And the third portion extends along the longitudinal axis between the first and second portions. The baffle at least partially defines a helical fluid flow path between the first and second ports, and the volume of the liquid is disposed in the second portion of the housing.

Abstract: A waste trap 10 for use in plumbing installations is provided, the trap comprising a unitary metal body 12 defining an interior volume, and having a tubular plastics insert 20 located in an inlet 14 of the body 12 and extending into the volume to below the height of a waste outlet 16. The insert 20 partitions the upper portion of the volume into two regions, and serves to provide a water seal between the inlet 14 and the outlet 16 when the trap is in use. The insert is non-removably secured to the body.

Abstract: A pressure and vacuum vent utilizing a column of liquid to open and close the vent at predetermined pressure and vacuum levels. A column of liquid is constrained in connection with internal and external passages coupled between a pair of expansion chambers. The external passage is sized to hold a level of liquid corresponding to a predetermined positive pressure level at which the valve will open, while the internal passage is sized to hold a level of liquid corresponding to a predetermined negative pressure level at which the valve will open. At either the predetermined positive or negative pressure level, the valve opens when sufficient liquid has exited either the external or internal passage to permit the flow of a restrained gas past the liquid column.

Abstract: A pressure and vacuum vent utilizing a column of liquid to open and close the vent at predetermined pressure and vacuum levels. A column of liquid is constrained in connection with internal and external passages coupled between a pair of expansion chambers. The external passage is sized to hold a level of liquid corresponding to a predetermined positive pressure level at which the valve will open, while the internal passage is sized to hold a level of liquid corresponding to a predetermined negative pressure level at which the valve will open. At either the predetermined positive or negative pressure level, the valve opens when sufficient liquid has exited either the external or internal passage to permit the flow of a restrained gas past the liquid column.

Abstract: An odor trap having a cup-shaped housing, which has an inlet located on an upper end and an outlet on a lower end leading into a drain line. A siphon blocks the passage of gas from the outlet to the inlet. A urine collector is configured in the shape of an inlet funnel. The inlet funnel empties into an open tube with a relatively narrow inside diameter.

Abstract: Sewerage inlet having a grating (3), a foliage-retaining basin (4) arranged below said grating (3) and a container provided with an outflow pipe (6) in which container a valve (10) controlled by a float is arranged upstream of the outflow pipe (6) and closes said outflow pipe (6) when the liquid in the container is lighter than water. For conveying the surface water away from streets, grounds and production yards a sewerage inlet is proposed, the container (5) thereof being subdivided by a removable separating floor (11) into an upper sedimentation chamber (12) and a lower collection chamber (13) into which the outflow inlet (8) connected with said outflow pipe (6) having a valve (10) and a float are arranged and whereby said sedimentation chamber (12) is connected via a soil pipe (14) with said collection chamber (13), the inlet opening (15) thereof being at a relatively large distance from said separating floor (11) and the outlet opening (16) being below said outflow pipe (6).