Abstract: An improvement is provided for combination with a pool jet head receptacle attachable to pool wall structure, the receptacle having an open top, an open bottom, and an internal thread. The improvement comprises:(a) an attachment in the form of a body receivable downwardly into the receptacle,(b) external threading on the body to rotatably attach to the receptacle thread,(c) a head on the body to close the receptacle open top,(d) and manipulable structure on the top of the head, that structure taking one of several forms.

Abstract: A separable coupling for plastic tubing comprising a pair of plastic collars sized to form a high strength bonded interference fit with the ends of plastic tubing. A pliant elastomeric sleeve encircles and bridges the two collars and includes ribs internesting with grooves formed encircling the exterior of the collars. Clamping bands assembled about the sleeve bridging the two collars separably interlock the components together in a fluid-tight manner.

Abstract: Hydrotherapy apparatus including continuous extruded plastic ducting of keyhole shape in cross-section adapted to be installed in the wall of a water pool and having a multiplicity of air dispensing perforations substantially flush with the interior wall surface. The ducting is readily assembled and installed by unskilled labor in a wide variety of configurations using simple tools and fittings and is connectable to a source of pressurized air.

Abstract: Tools are provided for servicing a submerged turbo head from the deck of a swimming pool whereby (1) the indexing mechanism of the turbo head can be manually manipulated at will to any position and (2) the head unit can be detached for servicing and reinstalled.

Abstract: A water barrier device for assembly about a pipe passing through a masonry wall to prevent seepage of water along the interface between the exterior of the pipe and the wall material. The barrier comprises a tubular sleeve and encircled by flanges having a fluid-tight fit with the pipe along a portion thereof embedded in and sealed to an impervious coating for the wall surface.

Abstract: A hydromassage device for use in jetting air and pressurized water into a pool of water and including eyeball means readily adjustable at the user's option to direct the issuing jet in different directions. Existing non-adjustable hydromassage devices can be retrofitted with the adjustable eyeball, or the adjustable eyeball may be mounted directly in a socket of the main body of the massage device as manufactured.