| 摘要 |
PROBLEM TO BE SOLVED: To provide a water supply device which can be made compact without reducing the degree of freedom of arrangement of the water supply device itself. SOLUTION: Respective passages on discharge sides of pumps 11 of two pump devices 10 arranged in parallel to each other are joined to each other, a three-way valve 15 is arranged at the joining part, and check valves 13 are arranged on discharge pipes 20 between the pumps 11 and the three-way valve 15. The three-way valve 15 is formed to be able to close either of the passages formed between the three-way valve 15 and the discharge sides of the pumps 11. COPYRIGHT: (C)2009,JPO&INPIT
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