To improve workability and to keep all city water inside a tank body clean without performing special maintenance.
A water storage tank 10 stores water which can be used as drinking water in emergency, and includes a tank body 12. On the center of one end face (22b) of the tank body 12, an introduction port 26 is provided. To the introduction port 26, city water on which a water supply pressure acts is supplied from a water supply pipe 16. Also, an inner pipe (38) extends inside the tank body 12 through the introduction port 26 to the other end, and a water supply port (40) is formed at the center position of the cross section of the tank body 12. On the lowermost part of the end face (22b), a lead-out port 28 is provided. The lead-out port 28 is connected to a faucet 18a to be used also as an emergency water intake plug in emergency. Also, on the uppermost part of the end face (22b), a lead-out port 30 is provided. The lead-out port 30 is connected to a faucet 18b to be used as an exhaust port when storing the water into the tank body 12.
KOBAYASHI TAKAHIRO
AOSHIMA NAOYA
KAWABATA KAZUHIRO
