A drain plug device is provided with a plug lid, a mounting member inserted in an overflow port, an operation handle provided corresponding to an opening of the mounting member at one end thereof so as to protrude from a surface of a sidewall, a transmission member configured to transmit a driving force generated by a pivoting operation of the operation handle to the plug lid side, and a handle moving mechanism capable of moving the operation handle. The handle moving mechanism is configured to make an amount of protrusion of the operation handle with respect to the surface of the sidewall when the drain port is open smaller than an amount of protrusion of the operation handle with respect to the surface of the sidewall when the drain port is closed. Whereby a good draining efficiency at the overflow port side is secured when draining is performed therethrough.

A drain plug device is provided with a plug lid, a mounting member inserted in an overflow port, an operation handle provided corresponding to an opening of the mounting member at one end thereof so as to protrude from a surface of a sidewall, a transmission member configured to transmit a driving force generated by a pivoting operation of the operation handle to the plug lid side, and a handle moving mechanism capable of moving the operation handle. The handle moving mechanism is configured to make an amount of protrusion of the operation handle with respect to the surface of the sidewall when the drain port is open smaller than an amount of protrusion of the operation handle with respect to the surface of the sidewall when the drain port is closed. Whereby a good draining efficiency at the overflow port side is secured when draining is performed therethrough.

An overflow cover interconnection system utilizes an overflow elbow with an upper portion for insertion through an overflow drain hole in a bathtub wall; a nut, ring, or other component that fits on or around the upper portion to secure the overflow elbow in position; and an overflow cap that shields the upper portion and nut, ring, or other component from view of a user of the bathtub. The system is configured for use with bathtubs having varying wall thicknesses, without necessitating any modifications thereof.

An overflow assembly for a bathtub includes an elbow having a first threaded section and a retainer nut having a second corresponding threaded section. The retainer nut is configured to threadably mount onto the elbow. The overflow assembly further includes an overflow cover including at least one overflow opening and at least one vent opening defined therein. The overflow cover is configured to engage with the retainer nut and substantially cover the first threaded section and the retainer nut.

A drain stopper includes a cap, a seal and a strainer engaged with the cap, and a gripping element engaged with the strainer. The gripping element is resilient and has a generally tubular shape with longitudinal notches, which give it a segmented annular shape. A person grips and squeezes the gripping element to insert the stopper/strainer into a drain pipe, after which the gripping element expands and grips an inside wall of the drain pipe. The person pushes downwardly on the cap to place the stopper/strainer in a closed position and pulls up on the cap for an open position. Another drain stopper includes a cap, a seal, a push-push mechanism, a strainer engaged with the mechanism, and a flange or prongs that rest on a drain flange for holding and supporting the drain stopper.

An overflow system in the bathtub has an overflow port and has a drain pipe in connection with the overflow port. A threaded flange has a stub shoulder on one end which is fitted into a circular sleeve on the overflow port. The threaded flange has exterior threads on its outer surface and a thin diaphragm secured to the end thereof opposite to the stub shoulder. A large internally threaded nut is threadably mounted on the outer end of the threaded flange. A decorative cap is frictionally snapped into engagement with protrusions on the outer surface of the nut. The cap can be removed when needed to permit the plumber to gain access to the diaphragm to cut it open for fluid flow after the system has been tested for leaks, or put in place after the cut takes place.

An overflow system in the bathtub has an overflow port and has a drain pipe in connection with the overflow port. A threaded flange has a stub shoulder on one end which is fitted into a circular sleeve on the overflow port. The threaded flange has exterior threads on its outer surface and a thin diaphragm secured to the end thereof opposite to the stub shoulder. A large internally threaded nut is threadably mounted on the outer end of the threaded flange. A decorative cap is frictionally snapped into engagement with protrusions on the outer surface of the nut. The cap can be removed when needed to permit the plumber to gain access to the diaphragm to cut it open for fluid flow after the system has been tested for leaks, or put in place after the cut takes place.

A drain for sanitary fixtures such as sinks, tubs or the like is described. The drain is provided with an automatic overflow mechanism, of the magnetic type, configured to be automatically activated when the water level in the sanitary fixture reaches the maximum level allowed. The overflow mechanism comprises a first magnetic element arranged on a stem of the plug, and a second magnetic element integral with the head of the plug and in-between the base and the first magnetic element. In the raised position of the plug, corresponding to the raised position of the head, the first magnetic element and the second magnetic element are magnetically coupled. When a threshold value of the water pressure acting on the head is exceeded, the first magnetic element and the second magnetic element are automatically uncoupled, causing the descent of the head towards the lowered position, corresponding to the opening of the mouth of the sanitary fixture initially closed by the plug. The drain preferably further comprises a manual lifting mechanism to lift the plug, configured to bring back the plug to the raised closed position following activation. Preferably, also the lifting mechanism is magnetic.

A drain for sanitary fixtures such as sinks, tubs or the like is described. The drain is provided with an automatic overflow mechanism, of the magnetic type, configured to be automatically activated when the water level in the sanitary fixture reaches the maximum level allowed. The overflow mechanism comprises a first magnetic element arranged on a stem of the plug, and a second magnetic element integral with the head of the plug and in-between the base and the first magnetic element. In the raised position of the plug, corresponding to the raised position of the head, the first magnetic element and the second magnetic element are magnetically coupled. When a threshold value of the water pressure acting on the head is exceeded, the first magnetic element and the second magnetic element are automatically uncoupled, causing the descent of the head towards the lowered position, corresponding to the opening of the mouth of the sanitary fixture initially closed by the plug. The drain preferably further comprises a manual lifting mechanism to lift the plug, configured to bring back the plug to the raised closed position following activation. Preferably, also the lifting mechanism is magnetic.

A method and apparatus for monitoring a water level in a basin are disclosed. An automatic refill system includes a level sensor coupled to a refill valve system. The refill valve system has a valve driven by an actuator. The actuator receives a signal from a controller in response to a measured water level. The refill valve system flows water into a basin from a water source until a desired level is reached.