Patent ID: 8293104

Claim:
A filtration system comprising a manifold which includes a first fitting and a second fitting; and a filter which includes a housing and a filter element, the housing having a filtration chamber and a first fitting and a second fitting which fluidly communicate with the filtration chamber and define a fluid flow path through the housing, the filter element being contained in the filtration chamber of the housing in the fluid flow path, wherein a fitting of one of the manifold and the filter comprises a nozzle which includes a tip portion having a contact surface and a fitting of the other of the manifold and the filter comprises a receptacle which receives the nozzle and has a contact surface, and wherein the filter is removably mountable to the manifold, the fittings of the filter detachably engaging the fittings of the manifold and the contact surface of the tip portion of the nozzle abutting and sealing against the contact surface of the receptacle to prevent leakage at the end of the nozzle, wherein the contact surface of the fitting which includes the nozzle and the contact surface of the fitting which includes the receptacle are formed from different materials, one material being harder than the other, and wherein the filtration system further comprises an O-ring seal between the nozzle and the receptacle, the O-ring seal being spaced from the abutting contact surfaces of the nozzle and the receptacle.