A device and method for producing pulsating waves of energy for the massaging effect normally associated with high pressure jet systems in whirlpools, pedicure spas, bathtubs and other medical and non-medical devices. The jet assembly includes no external pipes and unlike pipeless jet assembly systems in use today, does not require disassembly or circulation of chemical cleaning agents to maintain a sanitary condition of the jet assembly.

A bathwater circulating system has a pump operable to draw fluid in at an intake port and expel it under pressure at an output port. Water- and air-supply conduits feed water and air to the intake port at a rate determined by a flow-restricting air-intake valve so that the pump mixes the water and the air, pressurizes the mixture and thereby dissolves the air in the water, and expels the air/water mixture at the output port. A pressure-reducing valve is connected by an output conduit that extends from the output port to the pressure relief valve and conducts the water/air-bubble mixture from the pump to the pressure-reducing valve without separation of the air from the water and such that the mixture is at least partially depressurized at the pressure-reducing valve such that the air forms microbubbles in the water.

A pulse wall nozzle for a bathtub includes a nozzle body provided with a water inlet, a nozzle cover provided with water spray holes and a rotating roller. The nozzle body cooperates with the nozzle cover to form a cyclone cavity. The rotating roller arranged in the cyclone cavity is capable of continuously rotating to result in constant change of water outlet positions, so that the massage range is wider. The pulsed water creates a powerful and rhythmic pulsed fluid. The massage effect is not only strong and profound, but also allows users to immerse themselves in a dynamic massage movement. Venturi suction is generated at the water spray hole, so that air and water at the water spray hole are mixed to form dense bubble water, which can enhance the strength and effect of pulse massage and provide pulse massage rich in bubbles.

A fluidic geometry, chip, and nozzle assembly capable of providing multiple oscillation frequencies without the need for moving parts is contemplated. A fluidic circuit having feedback loops with differing cross-sectional areas will allow for output of oscillating sprays having different frequencies based upon fluid pressure.

A spa jet body that provides venturi in a crosswise and tangential orientation to the exit port of water/air mixture which provides for the elimination of moving parts inside of the jet body to create turbulence when in a perpendicular orientation and preserves precious space behind a vertical spa wall or a spa foot well. The venturi enters the inner circumference of the jet body turbulence chamber in a tangential and crosswise orientation, creating turbulence therein with the water/air mixture exiting out the massage head in a pulsating manner, the massage head being a face plate with exit apertures, some of them being specially designed for the footwell. The face plate connects to the jet body through a nut which is secured with screws that pass through the face plate onto the open perimeter top of the jet body.