Removes all trapped air, micro bubbles and dirt, Guarantees fast startups, eliminates ""no heat"" call backs, Helps prevent corrosion of system by air, Fully serviceable, top to bottom, Low pressure drop, high CV bi-directional flow, Maximum operating temperature is 240 F, Maximum pressure 125 PSI, 1/2"" bottom connection for expansion tank, Dynamic concentrator has three times more power than static devices, Bronze/stainless construction, SKU: HMREX1417