Pop-up fountain embodiments are provided which successfully combine aesthetics, utility and ease of installation and are thus especially suited for installation into spas, hot tubs, pools and the like. Different embodiments include a fountain body and a fountain valve which is slidingly received in the body. The valve terminates in a cap which substantially fills an aperture of the body when the valve is in a quiescent position. Applied water pressure forces the valve into an energized position where the form of the valve directs water laterally in an aesthetically-pleasing pattern. The valve preferably includes a deflector which is arranged below the cap and configured to control and enhance the lateral deflection.

A hydrotherapy jet includes a jet body having an open upstream end and an open downstream end and defining a flow path between the open upstream end and open downstream end, a flapper disposed within the flow path, the flapper having upstream flapper and downstream flapper ends and rotatably connected to the jet body at the upstream flapper end to rotatably oscillate about the upstream flapper end when a stream of water is introduced from upstream to downstream through the flow path and a head spoiler formed on the downstream flapper end to reduce the frequency of oscillation of the flapper wherein a stream of water pulsating effect is felt by a user of the jet apparatus adjacent the open downstream end as the flapper rotatably oscillates.

A hydrotherapy jet for providing a pulsating water stream comprises a jet body, and a water inlet to allow a stream of water into the body. A water outlet allows the stream to exit the body and a movable ball within the body causes said stream of water to pulsate as it exits the body.

A laminar flow jet is disclosed that provides a non-turbulent smooth stream of water. The jet is structured to remove turbulence from the moving water. As the water flows through the jet, a screen component and a nozzle component cooperate to slow the water flow and provide a uniform flow direction. The jet is also structured so that the laminar stream may be lighted from within the jet. The body of the jet is designed to receive an elongated and transparent probe carrying a lighting apparatus such as a fiber optic cable. The laminar flow jet is designed to be mounted to a structure such as a spa, pool or tub wall.

A pulsating hydrotherapy jet is disclosed which has a jet body with a water inlet to allow water to flow into the body. The jet body discharges the water through a discharge member in more than one concentric pattern. A cap mounted on the body to receive the circular water patterns is also disclosed. The cap has a number of openings that form more than one concentric opening ring. Each of the opening rings align with a respective one of the circular water patterns to provide the sensation of a number of circular patterns of multiple pulsating jets. A system for providing a hydrotherapy jet to a reservoir of water is also disclosed. The system includes a reservoir shell capable of holding water with a number of hydrotherapy jets according to the invention that are mounted around the reservoir shell. A water pump system circulates water from the reservoir to the jets.