Primary/secondary piping is a way to achieve hydraulic separation by connecting multiple hydronic circuits with their own circulators to prevent interference. Using a pair of closely spaced tees is a common method to achieve this.
Resideo’s Magnetic Hydraulic Separator protects modern hydronic installs by providing control and protection through air, debris, dirt and ferrous removal, plus critical flow management between connected hydraulic circuits.
The Spirovent Quad Magnet is a hydraulic separator that incorporates effective air elimination of a Spirovent plus adds powerful magnets surrounding the flow path to increase the efficiency of separating ferrous material from the circulating system.