Structure
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USM type
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| Part name | | 1 | 1st-stage suction casing | | 2 | 1st-stage casing | | 3 | 2nd-stage suction casing | | 5 | Rear-final-stage casing | | 6 | Multistage casing | | 7 | Multistage guide vane | | 8 | 2nd-stage suction port | | 9 | 1st-stage impeller | | 10 | Multistage impeller | | 13 | Casing bush | | 14 | Impeller spacer | | 16 | Shaft | | 17 | Crossover pipe | | 18 | Ball bearing | | 19 | Ball bearing | | 20 | Exhaust valve |
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UBM type
 |
| Part name | | 1 | 1st-stage suction casing | | 2 | 1st-stage casing | | 3 | 2nd-stage suction casing | | 4 | Rear-stage suction casing | | 5 | Rear-final-stage casing | | 6 | Multistage casing | | 7 | Multistage guide vane | | 8 | 2nd-stage suction port | | 9 | 1st-stage impeller | | 10 | Multistage impeller | | 11 | Seal impeller | | 12 | Seal impeller case | | 15 | Front-final-stage casing bush | | 16 | Shaft | | 17 | Crossover pipe | | 18 | Ball bearing | | 19 | Ball bearing | | 20 | Exhaust valve |
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MEF type
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| Part name | | 1 | 1st-stage suction casing | | 2 | 1st-stage casing | | 3 | 2nd-stage suction casing | | 4 | Intermediate-stage casing | | 5 | Intermediate-stage guide vane | | 6 | Final-stage casing | | 7 | Balancing chamber cover | | 8 | 1st-stage guide vane | | 9 | Guide vane | | 10 | 1st-stage impeller | | 11 | Multistage impeller | | 12 | Seal impeller | | 13 | Exhaust cover | | 14 | Balancing drum | | 15 | Balancing drum bush | | 16 | Balancing disk | | 17 | Shaft | | 18 | Ball bearing | | 19 | Ball bearing | | 20 | Balancing pipe |
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