Water jet aerator for ganged operation

摘要

There is disclosed herein a spa water jet aerator which proportionately controls the flow of water and air with a single control movement of a valve mechanism. The air and water apertures in the valve body are so shaped and located such that the air flow is controlled so as to be a function of volume of water flow. The function can be varied by varying the shapes and placements of the air and water passageways in the valve body relative to the locations and shapes of the air and water passageways in the aerator body. A key feature is that the air passageway can never be open to any extent when the water passageway is not open sufficiently to create a lower pressure in the mixing chamber than is present in the air supply line since this can lead to malfunction in ganged operation. A separate clamping mechanism allows adjustment of the water flow control valve to be independent of clamping movement of the clamping mechanism. In this way clamping forces causing deformation in the material of the aerator tend not to bind the movement of the valve in its adjustment motion.