Water delivery system

A water delivery system that is comprised of:

• hot and cold water lines that are for feeding hot and cold water to respective hot and cold water fixtures;
• said hot water line including a hot water outlet pipe for receiving hot water from a hot water source and a hot water exit pipe that couples to the hot water fixture, said cold water line including a cold water supply pipe for receiving cold water from a cold water source and a cold water exit pipe that couples to the cold water fixture:
• a water circulator for pumping water from the hot water outlet pipe to the hot water fixture;
• the cold water supply pipe feeding a junction, wherein a first cold water exit pipe extends between the junction and the cold water fixture, and a second cold water exit pipe extends between the junction and the water heater;
• a bypass line that extends between the water circulator and the second cold water exit pipe;
• and a check valve that is disposed in the bypass line, the check valve configured to selectively direct the hot water to the second cold water exit pipe while preventing flow in an opposite direction toward the water circulator;
• and wherein the water source is a tank-less water heater and the check valve includes a restrictive through orifice.

A water delivery system that is comprised of:

• hot and cold water lines that are for feeding hot and cold water to respective hot and cold water fixtures;
• a water heater having a cold water input and a hot water output;
• a water circulator for pumping water from the hot water outlet to the hot water fixture;
• the cold water line feeding a junction, wherein a first cold water line extends between the junction and the cold water fixture;
• and a second cold water line extends between the junction and the water heater;
• a bypass line that extends between the water circulator and the second cold water line;
• and at least a first check valve constructed and arranged in the bypass line for selectively directing hot pumped water from the water circulator to the second cold water line to the water heater while preventing flow in an opposite direction toward the water circulator;
• and wherein the water heater is a tank-less water heater.

A water delivery system that is comprised of:

• hot and cold water lines that are for feeding hot and cold water to respective hot and cold water fixtures;
• said hot water line including a hot water outlet pipe for receiving hot water from a hot water source and a hot water exit pipe that couples to the hot water fixture, said cold water line including a cold water supply pipe for receiving cold water from a cold water source and a cold water exit pipe that couples to the cold water fixture and that is comprised of a first cold water exit pipe and a second cold water exit pipe;
• a water circulator for pumping water from the hot water outlet pipe to the hot water fixture;
• the cold water supply pipe feeding a junction, wherein the first cold water exit pipe extends between the junction and the cold water fixture, and the second cold water exit pipe extends between the junction and the water heater;
• a bypass line that extends between the water circulator and the second cold water exit pipe;
• and a check valve constructed and arranged in the bypass line, the check valve positioned so as to selectively direct the hot water from the water circulator to the second cold water exit pipe while preventing flow in an opposite direction toward the water circulator.