Patent ID: 8517050

Claim:
A pressure regulating device that regulates a pressure of a fuel, comprising a housing that includes a fuel introduction passage into which the fuel to be supplied into a fuel consuming unit is introduced and a fuel discharge passage from which the fuel is discharged, wherein the fuel discharge passage includes a plurality of discharge passage portions each configured to pass therethrough the fuel introduced into the fuel introduction passage; a pressure regulating member, provided so as to partition the housing, that communicates the fuel introduction passage and the fuel discharge passage with each other and cuts off the fuel introduction passage and the fuel discharge passage from each other, according to a pressure of the fuel introduced into the housing; an impelling mechanism that impels the pressure regulating member in a direction of cutting off the fuel introduction passage and the fuel discharge passage from each other; and a discharge restricting mechanism, provided in the fuel discharge passage, that selectively restricts discharge of the fuel from the plurality of discharge passage portions, wherein the pressure regulating member faces the plurality of the fuel discharge passage portions, wherein the fuel introduction passage and the plurality of discharge passage portions are compartmentalized by a plurality of annular valve seat members provided in the housing; and the discharge passage portion that is subjected to the fuel discharge restriction by the discharge restricting mechanism is disposed to be adjacent to the fuel introduction passage.