A magnetic filter (10) for a central heating system is disclosed wherein the filter (10) comprises a connecting assembly (12), a canister (14) and a magnetic element (16) The connection assembly 12 includes an inlet 24 and an outlet 26 for connection to a central heating circuit, The canister has an inner separation chamber in fluid communication with the inlet 24 and the outlet 26 so that fluid can flow into the inlet 24 and out the outlet 26 through the separation chamber , The magnetic element 16 may be removably positioned external to the canister 14, The canister 14 and the connection assembly 12 form a sealed flow path including an inlet 24, an interior separation chamber and an outlet 26, And a closable drain outlet 28b for discharging fluid and magnetic particles from the interior of the canister 14 therein.
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