Abstract: A fluid distributing valve has the supply opening or conduit and the outlet openings or conduits disposed on the same side of the valve and oriented in the same direction. Accordingly the need for having couplings or unions to connect the supply pipe to the valve are eliminated. The valve includes a flow chamber or compartment and a control chamber or compartment so that the fluid passing through the valve does not flow past the operating members. By-passes are provided which may be finely screened to provide control water from the flow chamber to the control chamber. The valves are diaphragm operated, close, and remain closed against the flow pressure and are thus normally closed. They are open by a rotating operating cam whose operating surface moves cylindrical balls out of the way so that pressure in the control compartment can be exerted against the upper operating surface of the diaphragm operating members.

Abstract: Apparatus for intermittently directing one or more streams of water across the inner surface of a swimming pool structure for cleaning the surface. A cylindrical retractable nozzle head actuated by fluid pressure moves to an active, extended position to expose nozzle passages therein when water under pressure is applied thereto. The nozzle passages are formed in diametrically and symmetrically disposed thickened wall regions of the nozzle head to provide a nozzle head that is balanced about its longitudinal axis. In certain embodiments of the invention, a pair of nozzle passages are formed in the thickened regions and some or all of the passages have destructible membranes blocking communication with the interior of the nozzle head, which membranes may be selectively drilled out at the time of installation of the apparatus. The nozzle head, which is preferably molded from plastic material, may contain a weight member for additional balance and to assist in retraction of the head to its inactive position.

Abstract: The disclosure relates to a method and apparatus for swimming pool cleaning incorporating intermittent pop-up jet rotated nozzles; the nozzles being adapted to intermittently rotate and project cleaning jets of water adjacent said inner surface. The nozzles each have eccentrically positioned tangential water outlets forming jet outlet passages; the nozzles are vertically reciprocal and are rotatably mounted in housings having stop means such that when they are hydraulically energized by water under pressure in the housings, the nozzles emerge from the upper ends of the housings and cause jet reaction rotation thereof during upward movement which is arrested by the stop means in the housing. The housing includes a bore with clearance around the nozzle so as to provide a water bearing around the nozzle during its upward and rotative movement.