Valve device and electrolyzed water generation device

A valve device comprising:

• a cylindrical housing defining a space therein;
• and
• a valve body disposed in the space of the housing so as to be rotatable around an axial direction of the housing, wherein
• the housing is provided with a first supply port, a second supply port, a first discharge port, and a second discharge port each communicating with the space,
• the valve body is provided with an inner flow path extending so as to penetrate through inside of the valve body and an outer flow path formed between an outer peripheral surface of the valve body and the housing, and
• the valve body is configured to have, with respect to the housing,
• (1) a first switching position where the first supply port and the first discharge port communicate with each other via the inner flow path and the second supply port and the second discharge port communicate with each other via the outer flow path,
• (2) a second switching position where the first supply port and the second discharge port communicate with each other via the outer flow path and the second supply port and the first discharge port communicate with each other via the inner flow path,
• (3) a third switching position where the first supply port and the first discharge port communicate with each other via the outer flow path and the second supply port and the second discharge port communicate with each other via the inner flow path, and
• (4) a fourth switching position where the first supply port and the second discharge port communicate with each other via the inner flow path and the second supply port and the first discharge port communicate with each other via the outer flow path.