Abstract: A combination quick-disconnect female fitting adaptable for snap coupling to a corresponding male fitting connected to a tap water faucet, is provided which permits all the required attachments to a reverse osmosis (RO) water purifier to be made with the single snap coupling of the female fitting to the male fitting. Installation of the entire RO water purification system can be reduced to mere screwing of the male fitting to a tap water faucet and snap coupling the combination female coupling thereto. Separate lines for concentrate and overflow purified water from the water purifier to the combination female fitting and tap water therefrom to the water purifier can be conveniently manifolded into a sidearm section of the female fitting. The fitting is particularly useful for small RO water purifiers. There is also provided a single mechanism for simultaneously securely fastening three pieces of tubing to a fitting containing three nipples adapted to receive tubing.

Abstract: There is described an improved, modular, solar energy converting unit which operates as a solar heater. The modular heater incorporates upper and lower surfaces and a prescribed chamber therebetween. The chamber is defined by a plurality of walls or baffles which are substantially parallel and, alternately, extend from opposite sides of the modular unit. In addition, a sinuous, continuous rib member is arranged intermediate adjacent areas of said baffles while providing an interconnection which is spaced from the free end of alternate ones of the baffles. Each of the side walls includes portions which may be selectively interconnected with other portions of adjacent modules. In addition, each of the side walls includes means for aligning and interlocking adjacent modules. Additional support members are provided, to the extent necessary, wherein the module is capable of supporting substantial weights and may be used as a surface decking or the like.