Abstract: Operation of a water softener is controlled by a set of valves within a body that has water inlet, water outlet, a regenerant connector and a drain outlet. Openings are provided in an exterior wall of the body through which a plurality of valve elements are received. The body has opposing exterior side walls through which a seam diagonally extends, thereby separating the body into two parts sealed together at that seam. The diagonal seam divides internal fluid chambers between each part and facilitates molding the parts so that the entire body can be fabricated by only two parts.

Abstract: A bypass valve has a body with an inlet for receiving untreated water, an untreated water outlet for connection to a water treatment apparatus, a treated water inlet and an outlet through which treated water flows. The body includes a first valve seat between the inlet and the outlet, a second valve seat between the treated water inlet and the outlet, and a third valve seat in a flow path between the inlet and the outlet. A set of first, second and third flapper valve elements selectively engage and disengage the first, second and third valve seats respectively. The three flapper valve elements are preferably connected to a common manually operable actuator which can be latched to hold the valve elements in different functional positions.

Abstract: A bypass valve has a body with an inlet for receiving untreated water, an untreated water outlet for connection to a water treatment apparatus, a treated water inlet and an outlet through which treated water flows. The body includes a first valve seat between the inlet and the outlet, a second valve seat between the treated water inlet and the outlet, and a third valve seat in a flow path between the inlet and the outlet. A set of first, second and third flapper valve elements selectively engage and disengage the first, second and third valve seats respectively. The three flapper valve elements are preferably connected to a common manually operable actuator which can be latched to hold the valve elements in different functional positions.