Relief valve device and high-pressure pump

A relief valve device that is configured to connect with a first pressure chamber and a second pressure chamber and is operable to reduce a pressure of fluid in the second pressure chamber, the relief valve device comprising:

• a valve housing that includes:
• a communication passage, which communicates between the first pressure chamber and the second pressure chamber;
• and
• a relief chamber, which is configured to communicate with the second pressure chamber;
• a partition wall that is formed in an inside of the valve housing and partitions between the communication passage and the relief chamber;
• a first valve member that is configured to block and enable flow of fluid between the first pressure chamber and the communication passage;
• a first urging member that has one end, which contacts the first valve member, and another end, which contacts the partition wall, wherein the first urging member urges the first valve member in an opposite direction that is opposite from the partition wall;
• a second valve member that is configured to block and enable flow of the fluid between the second pressure chamber and the relief chamber;
• and
• a second urging member that has one end, which contacts the second valve member, and another end, which contacts the partition wall, wherein the second urging member urges the second valve member in an opposite direction that is opposite from the partition wall.