Adding more ballast pumps

[eder10986]

I got to thinking yesterday….we have a 17 SA with three pumps. Think I could plumb 3 more into our current system? I’m good with plumbing and decent with electrical stuff. Thoughts?


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[MLA]

Short answer, yes. I think the biggest hurdle is going to be having an unused port on the sac/tank for filling/draining.

[eder10986]

Maybe I’m under thinking the project. I was thinking I could plumb them in series with the same fill port tube. Maybe not?


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[larry_arizona]

Maybe I’m under thinking the project. I was thinking I could plumb them in series with the same fill port tube. Maybe not?


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You will gain very little if any by doing 2 pumps in series on a single hose.

Need to basically run a second pump and hose to each bag.


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[MLA]

The only gain is going to be parallel pumps or higher capacity pumps. With 2 pumps in series, your final flow rate is likely going to be that of the last pump, rather then summed flow rate of the 2 pumps.

[eder10986]

The only gain is going to be parallel pumps or higher capacity pumps. With 2 pumps in series, your final flow rate is likely going to be that of the last pump, rather then summed flow rate of the 2 pumps.

Now that I think about it this totally makes sense.

I’ve got done planning to do if I do this. Might try to tackle it in the winter time when I take the bags off.

What about the electric? Can I just splice in-line or will that trip a fuse?


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[larry_arizona]

Start up amps on a jabsco puppy pump is around 20 amps. You may need to upgrade breakers.


Perhaps upgrade to a jabsco king pump?

King 15GPM
Puppy 9 GPM

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[eder10986]

Start up amps on a jabsco puppy pump is around 20 amps. You may need to upgrade breakers.


Perhaps upgrade to a jabsco king pump?

King 15GPM
Puppy 9 GPM

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Not a bad idea. If I had 3 kings would the breakers still be good or would I need to upgrade?


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[larry_arizona]

Not a bad idea. If I had 3 kings would the breakers still be good or would I need to upgrade?


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Hrmmm, maybe kings are only 11 gpm and they would require a 25amp circuit versus a 20amp.


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[eder10986]

Thanks bro. Looks like I’m back to planning plan A of 6 puppies in parallel.


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