Abstract: A recirculating shower system that can supply recirculated water to one or more spray heads to conserve water consumption during use and reduce water pollution. The recirculated water may be combined with fresh water to maintain comfortable conditions of the water being dispensed via the one or more spray heads. The recirculating shower system may include a flow control valve that operates to control the fresh water supply and a recirculation skid that controls the supply of the recirculated-fresh water mixture. The recirculation skid may include one or more inline cleaning devices that are operable to generate cleaned water that can be distributed throughout the recirculated water plumbing for intermittent or periodic cleaning.

Abstract: A mixing valve adapter is configured to connect to a plumbing fixture for controlling the mixture of two supplies of water having different temperatures. The mixing valve adapter includes at least an adapter body, a first shaft coupled to the adapter body, and a second shaft coupled to the adapter body, wherein the first shaft has a first cross-section different than a second cross-section associated with the second shaft.

Abstract: A mixer valve includes a rotational assembly for selecting a temperature of the water up to a maximum temperature. The rotational assembly includes a selectable “comfort” temperature indicator, that can be set independently of the maximum temperature, and does not affect the maximum temperature. The valve also includes check valves for preventing cross flow between the hot and cold pipes. A check valve insert is provided which includes a shutoff for the water flow when removing the check valve for service. The shutoff and removal of the check valve can be effected with a single tool.