Drain system for bathtub

A method for controlling a water level in a bathtub, the method comprising:

• receiving, by a drain exit assembly, water exiting the bathtub, wherein the drain exit assembly is coupled to an exit drain of the bathtub;
• sensing, by a pressure sensor, a pressure associated with an inlet valve body coupled to a valve, wherein the valve is fluidly coupled to the drain exit assembly;
• and
• changing, by a motor, an operational state of the valve responsive to the pressure sensed by the pressure sensor;
• wherein the pressure sensor is in fluid communication with the drain exit assembly and operatively coupled to the valve.

A bathtub drain system comprising:

• a bathtub configured to receive water and having a first drain and a second drain;
• a drain exit assembly fluidly coupled to the first drain, the drain exit assembly configured to receive water flowing through the first drain;
• and
• an overflow drain assembly fluidly coupled to the second drain, the overflow drain assembly configured to receive water flowing through the first drain;
• wherein the overflow drain assembly is fluidly connected to the drain exit assembly downstream of a valve coupled to the drain exit assembly;
• wherein the valve is controlled by a motor and fluidly coupled with a pressure sensor, the pressure sensor configured to sense a pressure associated with a water level in the bathtub;
• and
• wherein the motor is configured to change an operational state of the valve responsive to the pressure sensed by the pressure sensor.