| 摘要 |
PROBLEM TO BE SOLVED: To prevent the locking of an impeller by preventing the occurrence of galling between the impeller and a wall surface in a pump chamber. SOLUTION: In the pumping installation for accommodating the impeller 1 in the pump chamber 3, the impeller 1 and at least one of sections 10, 11 that oppose the impeller 1 on a wall inside the pump chamber 3 are formed by an nickel group corrosion-resistant alloy. COPYRIGHT: (C)2005,JPO&NCIPI
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