A bathtub, including a bathtub body and a cover body provided at the internal bottom surface of the bathtub body, wherein a water passing gap is provided between the cover body and the internal bottom surface of the bathtub body. The bathtub further includes: a water discharging component, wherein the water discharging opening of the water discharging component is covered by the cover body, and water in the bathtub body flows into the water discharging opening via the water passing gap for water discharging; and/or a water inlet component, wherein the water of the water inlet component is covered by the cover body, and water flows from the water inlet into the bathtub body via the water passing gap.

A bathtub, including a bathtub body and a cover body provided at the internal bottom surface of the bathtub body, wherein a water passing gap is provided between the cover body and the internal bottom surface of the bathtub body. The bathtub further includes: a water discharging component, wherein the water discharging opening of the water discharging component is covered by the cover body, and water in the bathtub body flows into the water discharging opening via the water passing gap for water discharging; and/or a water inlet component, wherein the water of the water inlet component is covered by the cover body, and water flows from the water inlet into the bathtub body via the water passing gap.

A bathtub, including a bathtub body and a cover body provided at the internal bottom surface of the bathtub body, wherein a water passing gap is provided between the cover body and the internal bottom surface of the bathtub body. The bathtub further includes: a water discharging component, wherein the water discharging opening of the water discharging component is covered by the cover body, and water in the bathtub body flows into the water discharging opening via the water passing gap for water discharging; and/or a water inlet component, wherein the water of the water inlet component is covered by the cover body, and water flows from the water inlet into the bathtub body via the water passing gap.

A bathtub, including a bathtub body and a cover body provided at the internal bottom surface of the bathtub body, wherein a water passing gap is provided between the cover body and the internal bottom surface of the bathtub body. The bathtub further includes: a water discharging component, wherein the water discharging opening of the water discharging component is covered by the cover body, and water in the bathtub body flows into the water discharging opening via the water passing gap for water discharging; and/or a water inlet component, wherein the water of the water inlet component is covered by the cover body, and water flows from the water inlet into the bathtub body via the water passing gap.

A water distribution system for providing multiple bathing functions independently for a walk-in bath tub using one pump that delivers pressurized water to a first valve having a first outlet for communicating pressurized water to a second valve and a second outlet for communicating pressurized water to a drain, the second valve selectively positioned for communicating pressurized water selectively to a respective piping system for a micro bubbles bathing function and for a pressurized jet bathing function, and a controller for moving the valves selectively to provide three operational bathing functions independently with the one pump. A method for providing multiple bathing functions independently with one pump is disclosed.

A water distribution system for providing multiple bathing functions independently for a walk-in bath tub using one pump that delivers pressurized water to a first valve having a first outlet for communicating pressurized water to a second valve and a second outlet for communicating pressurized water to a drain, the second valve selectively positioned for communicating pressurized water selectively to a respective piping system for a micro bubbles bathing function and for a pressurized jet bathing function, and a controller for moving the valves selectively to provide three operational bathing functions independently with the one pump. A method for providing multiple bathing functions independently with one pump is disclosed.

Air injectors are provided for conveying fluid and/or gas (e.g., air) into the fluid of a bathing apparatus. The air injectors can include a component for attachment to an outside surface of the bathing apparatus that can be hidden from the view of a user and another component for attachment to a source of the fluid and/or gas (e.g., air). The two components can be connected together for use or disconnected for servicing and cleaning the injectors, as well as servicing a check valve or the injectors.

Air injectors are provided for conveying fluid and/or gas (e.g., air) into the fluid of a bathing apparatus. The air injectors can include a component for attachment to an outside surface of the bathing apparatus that can be hidden from the view of a user and another component for attachment to a source of the fluid and/or gas (e.g., air). The two components can be connected together for use or disconnected for servicing and cleaning the injectors, as well as servicing a check valve or the injectors.

A control system for a whirlpool bath installation, including a single input source wiring for connecting to an input source of high voltage AC electrical power having a nominal current rating. A plurality of high voltage output connections are connected to the input source through a corresponding plurality of switches, for power connections to a respective high voltage load devices, whose cumulative nominal current draw ratings exceeds the current rating of the input source. An electronic controller controls states of the switches in response to user input commands. The electronic controller implements an algorithm or a set of rules preventing a system utilization of the high voltage loads from exceeding a total current draw exceeding said nominal maximum current rating.

A control system for a whirlpool bath installation, including a single input source wiring for connecting to an input source of high voltage AC electrical power having a nominal current rating. A plurality of high voltage output connections are connected to the input source through a corresponding plurality of switches, for power connections to a respective high voltage load devices, whose cumulative nominal current draw ratings exceeds the current rating of the input source. An electronic controller controls states of the switches in response to user input commands. The electronic controller implements an algorithm or a set of rules preventing a system utilization of the high voltage loads from exceeding a total current draw exceeding said nominal maximum current rating.