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Using the adjustable-blade pump can reduce operating power costs.
Operation power for the fixed-blade pump varies to points D, E, and P, and that for the adjustable-blade pump varies to points D, C, and B.
The hatched area indicates the saved operation power.
Comparison of operation power between fixed-blade pump and adjustable-blade pump (When semi-axial flow pump)
The blade angle adjustment rod inside the pumps main hollow shaft is controlled up and down and the impeller blade angle is adjusted by the ball joint connected to the spider.
Blade angle - controlling mechanism
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