Pressure regulating valve

A pressure regulating valve for a fuel supply system of an internal combustion engine which comprises a valve housing, said valve housing including a rigid bottom part (19), an intermediate part (18) having one end that rests upon said bottom part and a shoulder (21), a cap (20) including a collar (22), a diaphragm (23) secured between said shoulder on said intermediate part and said collar of said cap, said intermediate part including means which secures said cap to said intermediate part, said diaphragm dividing said valve housing to form a spring chamber and a fuel chamber, at least one inflow opening for admitting fuel into said fuel chamber, a one piece outlet fitting (9) secured to said bottom part in axial alignment with said valve housing, said one piece outlet fitting including a passage therethrough and a valve seat on one end thereof, a valve plate secured to said diaphragm in said fuel chamber, said valve plate cooperating with said valve seat on said outlet fitting to close and open said passage in said outlet fitting, and a connection to said cap for subjecting said diaphragm to a pressure differential.