Abstract: A flame arrestor for a fuel pump having housing extending intermediate an upstream end defining an inlet port and a downstream end defining an outlet port coupled in fluid communication with the outlet port along a fluid flow path. The fuel pump further has a motor operably coupled to a pumping element. The arrestor is provided as a body received within the housing intermediate the outlet port and the motor. The arrestor body, which is formed of an open-cell foam material having an average pore size and thickness selected as being both fluid permeable and adapted to prevent an ignition source from propagating therethrough, is disposed in the fluid flow path such that fuel from the pumping element tank may be pumped to the outlet port through the body with the ignition source being prevented from passing into the outlet port.

Abstract: A flame arresting system for a centrifugal fuel pump of a variety including a downstream impeller and an upstream inlet port. The system includes an arrestor body which is received with the inlet port within an associated fuel tank. The body is formed of an open-cell foam material having an average pore size and thickness selected as being both fluid permeable and adapted to prevent flame from propagating therethrough. The inlet port is contained within the body such that fuel within the fuel tank may be drawn into the inlet port through the arrestor body, with flame being prevented from passing into the tank from the inlet port.

Abstract: A flame arrestor for a fuel pump having housing extending intermediate an upstream end defining an inlet port and a downstream end defining an outlet port coupled in fluid communication with the outlet port along a fluid flow path. The fuel pump further has a motor operably coupled to a pumping element. The arrestor is provided as a body received within the housing intermediate the outlet port and the motor. The arrestor body, which is formed of an open-cell foam material having an average pore size and thickness selected as being both fluid permeable and adapted to prevent an ignition source from propagating therethrough, is disposed in the fluid flow path such that fuel from the pumping element tank may be pumped to the outlet port through the body with the ignition source being prevented from passing into the outlet port.