Patent ID: 7731097

Claim:
A water conservation device comprising: a housing defining a primary flow passage between an inlet at one end and a hot water outlet at an opposed end, the housing also defining a secondary flow passage extending from said inlet to a secondary outlet; a primary valve in said primary flow passage and axially movable between sealably closed engagement with a primary annular seat in said housing to permit flow through the primary flow passage from the inlet to the hot water outlet, and a diverting position in which the primary valve opens to direct flow from said inlet into the secondary flow passage, the primary valve being biased to open the secondary flow passage by a spring acting between the housing and the primary valve; a control element operable in response to increasing temperature of flow through said inlet to close said valve against the bias of said spring; and a secondary valve operable by a pressure differential between the secondary outlet and the hot water outlet and serving to close the secondary flow passage in response to closure of flow downstream of the hot water outlet.