A whirlpool bath with descaling function is provided. The whirlpool bath 1 comprises a bathtub body 10 including a bathtub 11, suction port 20 sucking the water contained in the bathtub 11, first jet nozzles 30 jetting bubble water into the bathtub 11, a circulation pipe 40 including a water supply pipe 41 and a return pipe 42, a pump 50 installed in the circulation pipe 40, a bypass pipe 60 branched from the water supply pipe 41 and connected to the return pipe 42 to directly return the water in the water supply pipe 41 to the pump, and a second jet nozzle 70 mixing air with water passing through the bypass pipe 60 to generate and jet bubble water. The scale of the circulation pipe 40, the pump 50 and the bypass pipe 60 is removed by bubble water generated by the second jet nozzle 70.

An integrated valve and manifold assembly includes a water valve configured to control water flow from one or two valve outlets. At least one of the outlets is coupled to a manifold. In some examples, the manifold is a dual-extrusion manifold having at least one air channel and at least one water conduit, and the water valve has a pair of air channels attached to a periphery of the water valve and configured to couple to the manifold air channels. In examples wherein at least one of the manifolds is a dual-extrusion manifold, a top portion of the assembly includes an air valve configured to control flow of air to air channel(s) of the dual-extrusion manifold. In other examples, the assembly includes a one-outlet or two-outlet water valve configured to couple to water manifolds, with no attached air channels or air valves.

A whirlpool bath with descaling function is provided. The whirlpool bath 1 comprises a bathtub body 10 including a bathtub 11, suction port 20 sucking the water contained in the bathtub 11, first jet nozzles 30 jetting bubble water into the bathtub 11, a circulation pipe 40 including a water supply pipe 41 and a return pipe 42, a pump 50 installed in the circulation pipe 40, a bypass pipe 60 branched from the water supply pipe 41 and connected to the return pipe 42 to directly return the water in the water supply pipe 41 to the pump, and a second jet nozzle 70 mixing air with water passing through the bypass pipe 60 to generate and jet bubble water. The scale of the circulation pipe 40, the pump 50 and the bypass pipe 60 is removed by bubble water generated by the second jet nozzle 70.

A bathing system includes a primary reservoir, a secondary reservoir, and an atomizer. The primary reservoir is configured to hold a first volume of water. The secondary reservoir is in fluid communication with the primary reservoir by a channel. The secondary reservoir is configured to hold a second volume of water. The atomizer is disposed in the secondary reservoir, and is configured to introduce water from the second volume of water into a flow of air received in the channel by atomizing at least a portion of the second volume of water to form an air-water mixture upstream of the primary reservoir.

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 valve for a plumbing system has a housing with an inlet and an outlet and a valve body movable in the housing between a throttle position with a decreased a flow cross section and reduced flow between the inlet and outlet and an open position with a large flow cross section and free flow between the inlet and outlet. Structure in the valve body applies hydraulic pressure from the inlet or outlet to the valve body to shift same into the throttle position when a pressure differential between the inlet and the outlet exceeds a specified value and into the open position in the absence of a pressure differential between the inlet and the outlet.

A spouting instrument is mounted on the surface side of a bathtub and spouts out water through a first spout port to the bathtub. To a first water supply port of the spouting instrument, water from a water supply source is supplied. The water supplied through the first water supply port flows through a first flow passage to the first spout port. The first flow passage includes a first ejector. The first ejector mixes air into the water flowing from the first water supply port to produce foam and sends the foam to the first spout port.

A nano-bubble water generating apparatus containing an application gas includes a motor, a pump integrated with the motor for supplying liquid, typically water, from an inlet pipe under a predetermined pressure through a supplying pipe to a pressure tank, a nano-bubble water generating tube mounted at the water entrance of a pressure tank, an electronic control portion, a pressure adjuster including an outer air inflowing portion to introduce an outer air or a specific gas supplied thereinto to control a pressure in the pressure tank, uniformly and a pressure adjusting portion airtightly coupled on the upper portion of the outer air inflowing portion to adjust an amount of outer air or specific gas to be supplied, and a nano-bubble water expanding tube for expanding and shattering nano-bubble water through an outlet pipe from the pressure tank, so that the size of the nano-bubble water is better micronized.

A sprayer configured to provide an air-water mixture to a pool or spa. The sprayer includes an outlet module for spraying an air-water mixture into a water cavity of the pool, a suction module for suctioning ambient air into the outlet module, and a connecting pipe that connects the outlet module and the suction module. The sprayer may be concealed within an inflatable chamber of the pool.

A valve for a plumbing system has a housing with an inlet and an outlet and a valve body movable in the housing between a throttle position with a decreased a flow cross section and reduced flow between the inlet and outlet and an open position with a large flow cross section and free flow between the inlet and outlet. Structure in the valve body applies hydraulic pressure from the inlet or outlet to the valve body to shift same into the throttle position when a pressure differential between the inlet and the outlet exceeds a specified value and into the open position in the absence of a pressure differential between the inlet and the outlet.