PURPOSE: To selectively obtain purified water having a purity conforming with the purpose of use by using this water purifier.
CONSTITUTION: This water purifier consists essentially of first to third water purification tanks 2 to 4, a casing 5 and a discharge pipe 7. The tank 2 is packed with a wound filter 2A, the tank 3 with an activated-carbon filter 3A and a hollow-fiber membrane filter 3B and the tank 4 with a reverse-osmosis membrane filter 4A. When a lever switch is turned and a microswitch 42 is closed, a solenoid value 26 provided on a branch pipeline 25 is opened, and the second-stage purified water filtered by the tanks 2 and 3 is discharged from the discharge pipe 7 through the branch pipeline 25. When the lever switch is turned and a microswitch 43 is closed, a water feed pump 32 is started, and the third-stage purified water stored in a water storage tank 29 is discharged from the pipe 7.
YAMADA YOSHIAKI
SAKAMOTO KAZUYA
KAWABE YASUYOSHI
TOYO ROKI SEIZO KK