A shower head includes a handle and a head portion. The head portion includes shower holes. The handle includes an upstream bubble generator that generates minute bubbles in water. The head portion includes a downstream bubble generator that generates minute bubbles in water in the same manner as the upstream bubble generator. The upstream bubble generator includes a constriction and a tapered portion. The downstream bubble generator has a swirling flow mode. Since minute bubbles are generated on the upstream and downstream sides, the amount of minute bubbles mixed in water becomes larger. This allows for showering by effectively using the function of minute bubbles.

This disclosure relates generally to jets for spas and, more specifically, to jets that can have more than one jet hydrotherapy spray mode. The jet can include a selectively rotatable jet head, the jet head having a first jet spray mode and a second jet spray mode. The jet head includes a valve, the valve having a first water inlet and a second water inlet, the valve further comprising a first air channel and a second air channel. The valve is rotatable from a first jet spray mode position in which a water intake is in fluid communication with the first water inlet and an air intake is in fluid communication with the first air channel, to a second jet spray mode position in which the water intake is in fluid communication with the second water inlet and the air intake is in fluid communication with the second air channel.

A bathtub massage nozzle includes a nozzle body, a nozzle body Venturi core, a bushing and a nozzle surface cover. The bathtub massage nozzle reduces the dilution and loss of bubbles in the process of water flow transmission. Therefore, the water flow can form dense bubbles in the nozzle, which are guided by the nozzle surface cover and released along a specific area of the bathtub. The massage water flow released by the nozzle surface cover carries more dense bubbles, which can enhance the strength and effect of massage. The nozzle surface cover and the bushing can be conveniently rotated to adjust the direction of the surface cover. Thus, different surface covers in the same bathtub can be kept in the same direction. In addition, position of the water outlet hole changes during rotation of the nozzle surface cover. Thus, the user can adjust position of the massage water outlet as needed.

A hot tub wall jet nozzle includes a nozzle body and a nozzle core seat. Water flows from the water inlet into the water flow channel in the nozzle body. Air enters through the air inlet of the nozzle body and reaches the first air accommodating cavity, then flows from the first air accommodating cavity to the second air accommodating cavity, and the air from the second air accommodating cavity is then mixed with the water in the nozzle core seat at the water outlet under the Venturi effect, and the mixed water and air flow is finally discharged through the water outlet. This structural arrangement allows for reduced dilution and loss of air bubbles during water flow transmission. The Venturi effect produced in this nozzle is capable of generating a greater volume of air ejection, thus enhancing the strength and effectiveness of the massage.

This disclosure relates generally to interchangeable jet modules having improved air and water flow. An interchangeable jet module may include at least one jet, a manifold with a mounting surface for mounting a base portion of the at least one jet, and a jet plate with a mounting surface for mounting a top portion of the at least one jet. The module may also include a first array of air and water chambers underlying the manifold mounting surface, a second array of air and water chambers underlying the manifold mounting surface and in fluid communication with the first array of air and water chambers through a valve, and a third array of air and water chambers underlying the manifold mounting surface and in fluid communication with the first array of air and water chambers and the second array of air and water chambers through a second valve.