Abstract: A quick release disposable filter cartridge for detachably coupling to a filter fitting of a circulating fluid system, comprises a canister having an open end and a closed end with an inlet and an outlet coaxially disposed at the open end thereof, an annular seal on the open end of the canister for sealingly engaging a filter fitting, a coupling comprising an elongated shaft coaxially mounted within the canister with a threaded inner end at the open end of the canister for coupling the canister to and drawing the annular seal means into the sealing engagement with the filter fitting in response to rotation of the canister, and an external outer end extending to the exterior of the canister, and quick release device comprising a cam and lever operatively coupled with the shaft for moving it axially relative to the seal for releasing the seal.

Abstract: An engagement member, which is detachably securable to the liquid outlet nipple of a filter receiving fitting, is movably carried by a filter housing which also carries an annular seal which resides against the sealing surface of the fitting. An actuating rod extending from the engagement means is received at one end of a lever which is pivotally secured to the housing. In response to movement of the lever, the housing moves relative the engagement member and the seal is separated from the sealing surface.