The inlet and outlet water manifolds are made from 4" anodized aluminum pipe, in four 68 3/4" long sections, and connected by flexible rubber connectors, for easy maintenance and or replacement. A damaged section can be disconnected and replaced in a matter of minutes. They are supported by specially machined support cross bars which cradle them and prevent movement when attaching or detaching hoses. The inlet and outlet manifolds are also self-purging, so that no air is trapped in the system at any time.