Waste-water heat recovery system

An effluent water heat-recovery unit comprising:

• a top plate having a plurality of inlet holes;
• a base unit coupled to the top plate, the base unit comprising a plurality of conduits in fluid communication with the plurality of inlet holes, the inlet holes and conduits cooperating to enable the transfer and collection of the effluent water, the conduits further adapted to enable heat transfer from the effluent water to the heat-recovery unit;
• and
• the base unit further comprising an internal drain port adapted to selectively release the effluent water from the unit.

A mixing-valve insert for a water faucet that provides a supply of cold and hot water, the insert comprising:

• a generally cylindrical and hollow valve body adapted to form a first chamber for mixing hot and cold water,
• the valve body having a cold-water inlet adapted to be in fluid communication with the supply of cold water, a hot-water inlet adapted to be in fluid communication with the supply of hot water, an outlet for discharged mixed hot and cold water from the valve body, and a second chamber for bypassing cold water from the cold-water inlet, discharging cold water via a diverter outlet, and a diverted water inlet whereby the cold-water inlet, the second chamber and the diverter outlet forming one fluid path;
• and
• the valve body insert further being adapted to releasably and selectively couple to a flow-ring assembly;
• the flow-ring assembly comprising a diverter inlet assembly adapted to be in fluid communication with the diverter outlet whereby a fluid-flow path enables cold water to flow from the cold water supply to the flow-ring assembly, the flow-ring assembly further comprising a diverter-outlet assembly adapted to be in fluid communication with the diverter inlet whereby the fluid-flow path continues back into the first chamber of the valve-body insert.