Mobile nozzles and associated systems for cleaning pools and spas are provided. One or more mobile nozzles traverse a pool or spa, dislodge settled debris from the floors thereof, and direct the debris to one or more outlets for removal and/or filtration. Each of the mobile nozzles can include a body, a water intake, a discharge nozzle configured to expel pressurized water, one or more sensors adapted for navigation and/or to locate debris within the pool or spa, a propulsion system, and a control system including a memory and a processor. The discharge nozzle can be movable between a plurality of orientations relative to the body, or can have a fixed orientation. The processor is operable to identify debris in the pool or spa and cause the discharge nozzle to be positioned such that the pressurized water expelled therethrough directs the debris toward a debris collection zone or outlet.

In a first aspect, a kit of parts is provided for a water-holding device such as a pool. The kit of parts includes a multi-function member and a lock ring. The multi-function member includes a flange portion and a rear eyeball support portion which are integral with one another. The flange portion fastens to a wall fitting. The rear eyeball support portion includes a rear support surface positioned to support a rear portion of an eyeball. The lock ring includes a front support surface and is threadedly connected to the rear eyeball support portion with the front support surface supporting a front portion of the water jet eyeball.

The invention provides an improved pool aerator for pools with water recirculation circuit, comprising a hemispherical body (200a) and an atmospheric air intake pipe (201). The body of the aerator comprises a rounded plastic object, having in the middle area a cylindrical portion (221), and at one end with a connecting means (202) to the pool nozzle, the middle portion of the aerator body continuing with a hemispherical dome (223), inside being a Venturi tube made in the form of two intersected frustoconical spaces—one for inlet (209) and the other (211) for mixing and discharging water mixed with air—whose two axes form an angle (α) between 10 and 20 degrees. The mixing hole communicates with a vertical cylindrical hole (203), in which the intake pipe is inserted by sliding, until the inner wall of the frustoconical hole is reached.

A pool nozzle assembly according to one embodiment includes a base having a hollow interior, an open first end, an open second end that is configured for securement to a wall of a pool. The pool nozzle assembly including a nozzle including a hollow ball portion and an elongated extension that protrudes radially outward from one end face of the hollow ball portion. A cover is configured to mate with the base to capture the ball portion between the cover and the base, the cover having an opening through which the elongated extension passes through.

Methods and apparatus are disclosed for an improved underwater vacuum cleaning system. Urging elements are provided on a vacuum head to encourage debris, especially large pieces of underwater debris, to matriculate under the head or otherwise toward the vacuum opening, rather than traveling over the head or otherwise NOT toward the vacuum opening. Various embodiments of engagement elements are disclosed between the vacuum head and a vacuum hose to improve the connection therebetween.

A nozzle including an inlet portion having an inlet housing with an inlet channel having a diameter; and an outlet portion having a first end secured to a first end of the inlet portion, the outlet portion including an outlet housing, and an outlet tube carried by the outlet housing and having an inner diameter less than the diameter of the inlet channel.

A system used to monitor and control a pool using a visual light communication system is disclosed.

A spa suction bulkhead or manifold is described. The manifold may be placed behind a removable seat back of the spa or other removable structure. The manifold may have a top portion connected to a main suction line and a main pump line. The top portion may have a cylindrical wall in the center, such that the top portion is divided into a central opening (in fluid communication with the main pump line) and an outer ring portion (in fluid communication with the main suction line). The manifold may also have a cover with a central opening and a plurality of holes formed therein. A spa removable seat back containing jets may fit at its base into the central opening of the cover in fluid connection with the main pump line and allowing the outer ring portion and cover to be exposed for water intake.

Methods and apparatus are disclosed for an improved underwater vacuum cleaning system. Urging elements are provided on a vacuum head to encourage debris, especially large pieces of underwater debris, to matriculate under the head or otherwise toward the vacuum opening, rather than traveling over the head or otherwise NOT toward the vacuum opening. Various embodiments of engagement elements are disclosed between the vacuum head and a vacuum hose to improve the connection therebetween.

A flow control device includes a body having an inner and an outer surface that oppose each other. The body may have a first opening and a second opening spaced from the first opening along a first axis. The inner surface may define a passage that extends from the first opening to the second opening along the first axis. The body may also include an inlet port between the first opening and the second opening, and a constriction in the passage between the first opening and the second opening. The flow control device may also comprise a nozzle disposed at least partially in the inlet port and extend at least partially across the passage along a second axis that is angularly offset with respect to the first axis. The nozzle may define an exit port in the passage.