Recently , I'm trying to design a propeller pump, and I have refer to some product manuals from some pump manufacturer. Now I have a question: why some pump have a stator/ guide vanes behind propeller but some not? In terms of cost, if such a big pump running at 4500m3/h x 4m don't need a stator, it goanna be very cheaper. But what the disadvantage it will have if no stator mounted?
Any comments will be very appreciated! Thanks a lot.
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