circulate hot water without a pump?
The thermal convection (warm water rising and cool water sinking), which takes place within your existing hot water tank, and the normal use of cold water create a higher water pressure on the hot water side of your plumbing system. This pressure differential circulates the warm water through your plumbing system and the HWL. When the hot water cools at the Hot Water Lobster Valve, the valve slowly opens allowing the cooler water to cross through the valve to the cold-water side of the plumbing. The thermal convection (within the hot water tank) draws the cooler water (through the cold water pipes) to the bottom of the hot water tank, while it forces the hotter water (from the hot water tank) into the hot water pipes. When the hot water reaches the HWL, the HWL slowly closes and stops the crossover flow of water. The cycle repeats when the HWL cools below the adjustable temperature setting.
