Patent ID: 7306715

Claim:
A pump module comprising: a fuel pump having a center axis of an outer circumference; a fuel filter including a filter casing and a filter element, the filter casing having an outer circumference; a pressure regulator for regulating pressure of fuel discharged from the fuel pump through the fuel filter; and a check valve for preventing the fuel from flowing back to the fuel pump, the fuel being discharged from the fuel pump, wherein the check valve is disposed on an upstream side of the fuel filter so that the check valve stops fuel flow from the downstream side to the upstream side, wherein the fuel pump includes a discharge portion having an inner circumference for discharging the fuel, wherein the filter casing covers at least a part of the outer circumference of the fuel pump, wherein the filter element is accommodated in the filter casing, and eliminates contaminants in the fuel discharged from the fuel pump, wherein the fuel filter includes a fuel inlet, which is engaged to the side of the inner circumference of the discharge portion in the center axial direction of the fuel pump and an O-ring disposed on a downstream side of the check valve, wherein the check valve is accommodated in an inner surface of the fuel inlet of the fuel filter, wherein the fuel inlet of the fuel filter is accommodated within the inner circumference of the discharge portion of the fuel pump, wherein the O-ring seals between the discharge portion of the fuel pump and the fuel inlet of the fuel filter.