Abstract: A coupling valve structure 26 is provided for a fuel supply module 20. The module has a fuel pump 20 disposed in a fuel reservoir 18, a feed line 21 in fluid communication with an outlet of the fuel pump for feeding fuel to a high pressure pump 16 and thus to an engine, and a return line 22 for returning excess fuel from the engine or high pressure fuel pump to the reservoir 18. The coupling valve structure 26 includes a check valve 28 constructed and arranged to communicate with the feed line to permit fuel to be delivered to the engine and to prevent the fuel from draining back to the fuel pump, and a pressure relief valve 30 integrally connected with the check valve via a conduit 23.

Abstract: A coupling valve structure 26 is provided for a fuel supply module 20. The module has a fuel pump 20 disposed in a fuel reservoir 18, a feed line 21 in fluid communication with an outlet of the fuel pump for feeding fuel to a high pressure pump 16 and thus to an engine, and a return line 22 for retuning excess fuel from the engine or high pressure fuel pump to the reservoir 18. The coupling valve structure 26 includes a check valve 28 constructed and arranged to communicate with the feed line to permit fuel to be delivered to the engine and to prevent the fuel from draining back to the fuel pump, and a pressure relief valve 30 integrally connected with the check valve via a conduit 23.