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Old 09-01-2010, 03:21 PM   #1
prodigal_son7
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Default Pump Guidance

Ok, so I know that March Pumps are essentially THE pump to use for brewing, but I have found a cheap pump on ebay that can handle the usual temps that are seen during the typical brew day.

So I guess my question is why is this pump bad?

http://cgi.ebay.com/NEW-DC-12V-Hot-W...ht_4757wt_1114

Cheers

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Old 09-01-2010, 03:44 PM   #2
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Originally Posted by prodigal_son7 View Post
Ok, so I know that March Pumps are essentially THE pump to use for brewing, but I have found a cheap pump on ebay that can handle the usual temps that are seen during the typical brew day.

So I guess my question is why is this pump bad?

http://cgi.ebay.com/NEW-DC-12V-Hot-Water-Pump-for-Circulating-System-24-hr_W0QQitemZ320483949980QQcategoryZ57015QQcmdZView ItemQQ_trksidZp4340.m8QQ_trkparmsZalgo%3DMW%26its% 3DC%26itu%3DUCC%26otn%3D5%26ps%3D63%26clkid%3D5990 388181259557875#ht_4757wt_1114

Cheers
Might be a decent find. The temp rating is hotter than water or wort can even get, so that's good. One thing you might want to check on is the line that says "food standard materials at request". Is that something you have to ask for, and will it make the price go up?

The first downside I see after a quick scanning of the listing is the flow rate of 6.5 liters/minute. That's about 1.7 gallons/minute... if you are just pumping horizontally. The flow will be less than than this when you have to pump it vertically.

Secondly, you will need a 12V DC power supply to drive it.


PS: Lately, people are starting to turn away from the march 809 and towards some pumps from Little Giant for brewing, but... march 809's are probably still the most widely used ones at present.
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Old 09-01-2010, 03:48 PM   #3
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this thing is puny...look at the dimensions converted

45 mm (W) X 86 mm (L) X 53 mm (H)

equals

1.77 in. (W) X 3.38 in. (L) X 2 in. (H)


ID Input is .4 in.
ID Output is .24 in. X .35 In. (whatever that means....must be square??)


look at the video and you will see what I mean

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Old 09-01-2010, 03:51 PM   #4
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1. Requires a 12v DC power supply (this alone is a deal killer IMO)
2. Generally not enough power. The specs indicate that the flow rate is only about 1.5 gpm at ZERO head pressure. That's pretty wimpy IMO and essentially renders it worthless for a home brewing application.

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Old 09-01-2010, 04:05 PM   #5
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Too wimpy for homebrew purposes IMO.

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Old 09-01-2010, 04:52 PM   #6
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well seeing the video just makes the decision simple. Thanks for pointing out the errors of my ways. though which model Little Giant are people using.

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Old 09-01-2010, 05:13 PM   #7
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I use secondaries. :p
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well seeing the video just makes the decision simple. Thanks for pointing out the errors of my ways. though which model Little Giant are people using.
I'm using a 3-MD-HC
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