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Thread: DIY keg washer pump sizing???

  1. #1
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    DIY keg washer pump sizing???

    What would be a good pump size for a dual DIY keg washer. Would a Chugger nano be large enough to do the job. we are currently using our cart pump, but it seems like that might be overkill.

  2. #2
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    I also have this same question. I've built a PLC/HMI controller that will automate 1" angle seat valves, heating element for Caustic or Acid #6, and two pumps but don't know what size pumps to get. I don't want to over power and risk lines bursting, coming off fittings or overfilling keg due to the exhaust not keeping up (out side at the bottom of the keg). I've specked a 1" tube that feeds the pump then from there it hits a 1" manifold that will Tee into two Sanke couplers then back into the chemical holding tank. Any advise?

  3. #3
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    A size in terms of power or pumping rate in gallons per.minute or hour would be great....

  4. #4
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    I've worked out that the pump head should be between 10-15' and tubing for the most part will consist of 1" or DN25. My flow rate maybe should be 10 - 30 GPM? I guess I may just have to hook a garden hose to a cut up keg and monitor the cascade on the side walls as well as the flow rate. I'll comment when I have done some testing. Also, has anyone purchased any pumps from Alibaba? I've seen some really good pricing on there and curious if anyone has any feedback.

  5. #5
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    Quote Originally Posted by Automatic12pro View Post
    I've worked out that the pump head should be between 10-15' and tubing for the most part will consist of 1" or DN25. My flow rate maybe should be 10 - 30 GPM? I guess I may just have to hook a garden hose to a cut up keg and monitor the cascade on the side walls as well as the flow rate. I'll comment when I have done some testing. Also, has anyone purchased any pumps from Alibaba? I've seen some really good pricing on there and curious if anyone has any feedback.
    What pump are you looking at now?

  6. #6
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    are you talking about these pumps?
    I just purchased one from ebay. I cannot find any reviews on it and yes its not UL listed as the CPE rep pointed out in thier pump section but many industrial things arent including many of the machines I install and service for a living and its never been a problem. Money is tight as we approach opening and at less than half of anything else comparable its something im willing to try out even if it doesnt hold up well. its got to be better than some of the utility pumps Ive seen other nanos using for this with possible oil leaks and such.
    I guess I will find out how well it works out first hand. There are replacement seals including the higher temp ones avalable and I figured this would work well for just Cip if nothing else.

    https://www.ebay.com/itm/Portable-11...72.m2749.l2649

    flow rate is supposedly like 48gpm...
    Last edited by augiedoggy; 06-01-2018 at 12:14 PM.

  7. #7
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    Quote Originally Posted by augiedoggy View Post
    are you talking about these pumps?
    I just purchased one from ebay. I cannot find any reviews on it and yes its not UL listed as the CPE rep pointed out in thier pump section but many industrial things arent including many of the machines I install and service for a living and its never been a problem. Money is tight as we approach opening and at less than half of anything else comparable its something im willing to try out even if it doesnt hold up well. its got to be better than some of the utility pumps Ive seen other nanos using for this with possible oil leaks and such.
    I guess I will find out how well it works out first hand. There are replacement seals including the higher temp ones avalable and I figured this would work well for just Cip if nothing else.

    https://www.ebay.com/itm/Portable-11...72.m2749.l2649

    flow rate is supposedly like 48gpm...

    That looks like it would work! I love how easy it looks to disassemble with the TC fitting on the pump housing. I've seen a few of those on Alibaba but typically cost plus shipping for two to the US is $850-$1000. Is that 60Hz or 50Hz?

  8. #8
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    Quote Originally Posted by Automatic12pro View Post
    That looks like it would work! I love how easy it looks to disassemble with the TC fitting on the pump housing. I've seen a few of those on Alibaba but typically cost plus shipping for two to the US is $850-$1000. Is that 60Hz or 50Hz?
    Its 60hz according to the picture (didnt know there was 50hz 120v in use). They are available in 240v and 380v as well according to some sellers. The same pump without the cart is $331 shipped from other sellers which if it works as advertised is great. ..I bought the one year warranty through ebay for $15 so like I said well see how it goes. the company already proactively sent me an email with pictures on how to wire it up.
    Last edited by augiedoggy; 06-01-2018 at 02:17 PM.

  9. #9
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    where did that pump mention 48 GPM? 3T/H is about 13 GPM according to this site.
    https://www.traditionaloven.com/tuto...er-minute.html

    Hopefully it works! What setup are you building augiedoggy?

  10. #10
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    Quote Originally Posted by Automatic12pro View Post
    where did that pump mention 48 GPM? 3T/H is about 13 GPM according to this site.
    https://www.traditionaloven.com/tuto...er-minute.html

    Hopefully it works! What setup are you building augiedoggy?
    it had come from a different calculator I had pulled up and used...
    I did get the pump and wired it up yesterday and verified it works but havent done anything beyond that yet. I plan on pulling it apart to investigate the main seal situation but it uses the orange rubber oring type on the outside housing.

    It appears Ive done my math wrong since I used this http://convert-to.com/conversion/wat...er-volume.html which gave me 792 which I divided by 60.. ill admit im unfamiliar with things being rated in tonnes I also googled other "similiar" 1 hp sized pumps and got around 40-60gpm
    I realize these are different pumps but the impeller design looks to be the same style as cpe systems pumps and the hp is around 1 hp and depending on rpm?

    I'll do a water test today and see. I was mainly looking for a CIP pump for my 3 bbl setup and maybe something for whirlpooling. I dont need anything crazy myself.
    Last edited by augiedoggy; 06-06-2018 at 06:18 AM.

  11. #11
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    I hope it's strong enough! I may be leaning toward a pneumatic diaphragm pump. They seem to be geared toward harsh chemical transfer and I think I could just use the compressor that's going to power my pneumatic valves and blowout cycles to power a pump as well. I may have to invest in a better compressor though. Still working out all the system requirements to see if its possible.

  12. #12
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    I did some testing over the weekend to find the flow rate needed to sustain a cascade over a keg inner wall.

    Here's what I did.

    I drilled a large opening into the side of a junk keg for observation.
    I then connected my water hose to my sanke coupler with inner ball stoppers removed.
    With the keg inverted, I opened the water line and raised it until the pressure achieved a cascade.
    I then removed the coupler and recorded the amount of time it took for the line to fill a 5 gallon bucket.

    Here's my result.

    4.2 GPM was the minimum flow required.
    4.8 GPM was my maximum flow rate with hose opened all the way. This was likely due to the restrictions of the 50' hose, 4' 3/4" hose, valve, fittings and coupler. Typical water flow should otherwise be around 15 GPM.

    Conclusion.

    The 4.2 GPM required doesn't indicate that a small pump could wash a keg. Number of couplers, hose ID, Tee's, Elbows, head height, viscosity and likely temp all play a role. I would assume a 20-30 GPM pump at 15-20' of head should be powerful enough. The other thing I noted while testing this with a un damaged keg is that drainage may be an issue if your pump is too strong. Just filling a keg using my above method and running for 60 seconds left the keg draining for 2-3 minutes. hopefully compressed gasses can reduce this but I may try to utilize some sort of reducer on the In side of my Coupler to the keg. Hopefully someone can offer some direction on this.

  13. #13
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    Ended up scoring one of these, hopefully its enough. Seems to be able to handle anything I would throw at it.

    https://www.usplastic.com/catalog/it...x?itemid=31740

  14. #14
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    so the pump I mentioned above IS about 40-50gpm... Its so strong is sucks my santoprene 3/4"ID intake hose closed so we plumbed it direct to test... VERY powerful whirlpool!
    I was able to source extra seals for it just in case as well. It blew the end of one of my hoses off and sprayed water about 25ft across the room too!

  15. #15
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    Quote Originally Posted by augiedoggy View Post
    so the pump I mentioned above IS about 40-50gpm... Its so strong is sucks my santoprene 3/4"ID intake hose closed so we plumbed it direct to test... VERY powerful whirlpool!
    I was able to source extra seals for it just in case as well. It blew the end of one of my hoses off and sprayed water about 25ft across the room too!
    And that is the 110v pump?

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