Sinks and drains for sinks permitting the attachment of the drain to the sink such that the drain is substantially disposed below the top surface of the sink basin, and such that there is no discernable separation between the base of the sink basin and the drain when viewed from above the sink. A method of making a sink such that there is no discernable separation between the base of the sink basin and the drain when viewed from above the sink.

A disposable flexible container for installation into a sink. The sink comprises an upper opening and a bottom opening for draining, and the container respectively comprises an upper opening and a bottom opening. When installed in the sink, the walls of the container are adjacent or attached, fully or partially, to the sides of the sink, the container upper opening if fitted, fully or partially, to the sink upper opening, and the contain bottom opening is fitted, fully or partially, to the sink bottom opening.

A disposable flexible container for installation into a sink. The sink comprises an upper opening and a bottom opening for draining, and the container respectively comprises an upper opening and a bottom opening. When installed in the sink, the walls of the container are adjacent or attached, fully or partially, to the sides of the sink, the container upper opening if fitted, fully or partially, to the sink upper opening, and the contain bottom opening is fitted, fully or partially, to the sink bottom opening.

A system for capturing and destroying hair and waste within a shower drain includes a basket placed in the drain which holds a rod including an enzyme blend. The basket captures hair or waste that is washed down shower drains The enzyme blend neutralizes the hair or waste. The result is a clear drain and clear plumbing, with minimal manual labor. The basket does not require removal because the hair and waste are neutralized before a clog can develop. The enzyme blend is safer for both users and the plumbing systems treated than conventional drain cleaning chemicals.

The present disclosure discloses a drain assembly, has a downpipe and a sealing plug; the upper end opening of the downpipe is provided with a connecting pipe seat by integral molding and the upper end opening of the connecting pipe seat serves as a sewer outlet; the downpipe and the connecting pipe seat internally share a connector that can move upward or downward; the upper end part of the connector is linked with the sealing plug; the pipe wall of the downpipe is integrally provided with a guide seat at the position corresponding to the lower end part of the connector; the guide seat is communicated with interior of the downpipe. Furthermore, the stay wire component is elastically clamped on the downpipe through a wave spring, therefore, the installation speed is increased and the sealing effect of the connection is ensured.

Systems and methods for providing a sink basin having a coupled drain assembly for interchangeably coupling a drain and a garbage disposal are described. In an aspect, a sink basin drain assembly includes, but is not limited to, a drain body defining an interior; a collar extending outwardly from the drain body and terminating at an exterior edge and tapering from the exterior edge to an aperture fluidically coupled with the interior, the exterior edge configured to couple with an inwardly extending interior lip on a bottom portion of a flanged drain housing, the collar including a collar seal configured to abut an upper surface of the; and a drain shield including a base and sidewalls extending upwardly from the base, the sidewalls configured to interface with the bottom portion of the flanged drain housing to push the lip against the collar seal.

Systems and methods for providing a sink basin having a coupled drain assembly for interchangeably coupling a drain and a garbage disposal are described. In an aspect, a sink basin drain assembly includes, but is not limited to, a drain body defining an interior; a collar extending outwardly from the drain body and terminating at an exterior edge and tapering from the exterior edge to an aperture fluidically coupled with the interior, the exterior edge configured to couple with an inwardly extending interior lip on a bottom portion of a flanged drain housing, the collar including a collar seal configured to abut an upper surface of the; and a drain shield including a base and sidewalls extending upwardly from the base, the sidewalls configured to interface with the bottom portion of the flanged drain housing to push the lip against the collar seal.

A hydrostatic tank floor relief valve of a construction described herein provides for equalization of hydrostatic pressure of fluid in a storage tank with hydrostatic pressure of ground water surrounding the storage tank. A high efficiency grate located in a flow channel of the hydrostatic tank floor relief valve blocks debris from entering the storage tank during pressure equalization, yet does not reduce effective flow rates through a flow channel of a given diameter. The hydrostatic tank floor relief valve optionally includes an elastomeric seal surface and a stainless steel seat ring that reduce the likelihood of particulate matter disrupting valve operation, and provide a more reliable seal.

A drain filter assembly includes a screen filter that is configured to be installed at a drain and that is configured to block foreign substances in liquid while the liquid passes therethrough. The screen filter includes: a plurality of filter holes configured to allow passage of the liquid into the drain, where each of the plurality of filter holes has a pore size that is less than sizes of the foreign substances; and an air communication hole configured to allow passage of air the liquid passes through the plurality of filter holes. A diameter of the air communication hole is greater than the pore size of each of the plurality of filter holes.

A drain filter assembly includes a screen filter that is configured to be installed at a drain and that is configured to block foreign substances in liquid while the liquid passes therethrough. The screen filter includes: a plurality of filter holes configured to allow passage of the liquid into the drain, where each of the plurality of filter holes has a pore size that is less than sizes of the foreign substances; and an air communication hole configured to allow passage of air the liquid passes through the plurality of filter holes. A diameter of the air communication hole is greater than the pore size of each of the plurality of filter holes.