Watts Radiant's hydraulic separators are designed to decouple the primary loop flow from the secondary, impede particle and sediment movement through a system, and to act as a point of air removal. It comes in sizes of 1", 1 1/4", 1 1/2", 2" and 2 1/2". This product is manufactured in house at Watts Radiant's 140,000 sq. ft. manufacturing facility in Springfield, MO. This high quality separator's compact size has the function of primary/secondary piping in a fraction of the space. It also serves as water filtration. For further information about this product, please contact Watts Radiant at 800-276-2419.