circulation pump Bi directional?

PBKboater

Seaman
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Joined
Sep 25, 2007
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65
Replacing circ pump with new one for my 460 rebuild and found one sierra co which is a so called Bi directional. Is there a difference from stock pump versus after market Bi direct. ...ie I'm thinking that the flow rate might be different due to the BI direct impeller blades. (pitch of blades). I know another stupid question! But I'm curious!

Thanks in advance,
Paul
 
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