A double-wall, liquid to liquid heat exchanger designed to transfer heat without mixing non-potable fluids (such as glycol) with potable fluids (drinking water). Safe for use in water-to-water applications, too, and well suited for hookups to furnaces, solar collectors and for hydronic heating applications. Can also be used for water to-water applications. The 3' model is designed for solar thermal systems with about 64 sq. ft. of collector surface area, the 4' for 80 sq. ft., the 5' for 96 sq. ft.
Quad Rod Heat Exchangers 
