主权项 |
1. A friction manifold for a hot tub with a basin, comprising:
a portal through which water passes to enter the hot tub basin, said portal including a number of raised sections spaced around the interior perimeter of said portal, said raised sections to interact with water passing through said portal, whereby as water travels through the said portal, the water travels across the surface of the raised sections and creates frictional energy that is transferred to the water in the form of heat, thereby raising the temperature of the water. |