Valve device and hot water supply device

A valve device, comprising:

• a case;
• a first valve body and a second valve body;
• and
• a shaft body connected with the first valve body,
• wherein the case has a valve chamber and a first water communication port, a second water communication port, and a third water communication port in communication with the valve chamber,
• the first valve body and the second valve body are disposed in the valve chamber,
• the first valve body is rotated about a central axis of the shaft body,
• the second valve body is rotated about the central axis together with the first valve body,
• when the first valve body is rotated about the central axis in a first angle region, a first flow rate and a second flow rate are changed by the first valve body, wherein the first flow rate is a flow rate of water flowing between the first water communication port and the third water communication port, and the second flow rate is a flow rate of water flowing between the second water communication port and the third water communication port,
• when the first valve body is rotated about the central axis in a second angle region, the second flow rate is changed by the second valve body.