return pump and reducing the flow?

[persun87]

Is it ok to use a ball valve on the return line to slow down the flow form the pump or will this cuase problems to the pump from the extra pressure? it is a mag7 pump just need to reduce the return flow to get rid of air bubbles,. thank you

 

[mfinn]

You can do that.
But it would be better to figure out where the air bubbles are coming from.

 

[snorvich]

I do not know about that particular pump but I do gear back my sequence pumps and it does not seem to cause a problem. It looks as if it just translates into additional head pressure.

 

[sjm817]

You can swap out the impeller for a Mag 5 impeller and convert the Mag7 to a Mag5.

 

[albertan22]

You can always put a T in the line with your valve and run a return to back to the sump. That way it's not putting backpressure on your pump as the additional pressure gets redirected to the sump.

 

[mfinn]

<a href=showthread.php?s=&postid=11644431#post11644431 target=_blank>Originally posted</a> by sjm817
You can swap out the impeller for a Mag 5 impeller and convert the Mag7 to a Mag5.

Now that is a really good idea.:thumbsup:

No extra plumbing, everything internal.