Abstract: This invention concerns a new type of Mini-Collar which can be worn continuously around the neck, its very small, very light, not bulky, comfortable, and brought into use rapidly and very easily. The Collar is formed from two symmetrically almost identical, independent major elements. The invention provides for each major element to be independent and to include apparatus to deliver compressed air, to inflate an expansible envelope providing support for an individual in the water. The inflatable assembly of each independent element comprises essentially a frame shaped as a semicircle which is a container frame filled with compressed air. Cooperation between the two elements provides that each one forms at one end, half of a hinge which secured to each other will form a solid coupling element.

Abstract: A mixing valve housing containing two separated inlet chambers and a plurality of valve units which are individually operated from remote positions provides mixed fluid through outlet lines from the individual valve units to destinations remote from the valve housing. An optional flow equalizing apparatus provides balance in the amount of flow from the inlet chambers to each valve unit outlet. All of the valve units in the valve housing have alternative mechanical systems that can be operated using commercial power source or utilize the pressure of the fluid in the inlet chambers for operation. By connecting these mixing valve housings to a pair of centrally located, pressurized headers the need for constant pressure in delivery conduits throughout a structure is eliminated.