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Old 01-19-2013, 06:37 PM   #1
tlg779
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Has anyone had any experience with diaphragm pumps I was given a brand new surflo pump and wondered if it could be used for wort transfer it is a potable water pump



 
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Old 01-19-2013, 06:42 PM   #2
mrrshotshot
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Got a picture? My experience with diaphragm pumps is through chemical injection. How fast can it pump?



 
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Old 01-19-2013, 07:16 PM   #3
tlg779
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It says it can pump 2.8 gallons per min I was told it was for a rv's potable water system I just wonder if it can handle the high temp of wort

 
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Old 01-19-2013, 07:59 PM   #4
tlg779
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Just for curiosity I tried pumping 10 gallon of 210 deg. Water through it had no issues and only took about 4 min..also I restricted the flow down to about 10% and the pump seemed to function fine

 
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Old 01-19-2013, 08:07 PM   #5
mrrshotshot
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Sounds like it works then. Most diaphragm pumps I work with are like 0.3 gallons per HOUR lol. Maybe see if you can find the manufactureers manual online.

 
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Old 01-19-2013, 08:13 PM   #6
tlg779
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Sounds like this is a pretty common pump it is used in a lot of on demand systems for RV's and boats found that they are about the same price as a march pump but I got this one for free

 
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Old 01-20-2013, 04:48 PM   #7
cracked1
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If it has the tag on it with the model I would Google it and find the specs. I looked into using motorhome pumps a long time ago and none of them were suitable for high temps. It may work for awhile but I wouldn't trust it to last. The high temps may also cause it to leach chemicals and off flavors.
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Old 01-21-2013, 12:14 AM   #8
nasty_rabbit
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Quote:
Originally Posted by mrrshotshot View Post
Sounds like it works then. Most diaphragm pumps I work with are like 0.3 gallons per HOUR lol. Maybe see if you can find the manufactureers manual online.
+1 on finding the manual and specs.

I work (production not engineer) at a chemical manufacturing facility and we use diaphragm pumps in different applications through out the plant. The working part of the pump is a plastic/rubber like bladder, some are rated for temperature and some are rated for the chemicals that are transfered. The highest temperature that any of ours are rated for is 200f but in our facility we don't move anything that hot with a diaphragm pump. If the pump that you have is for an RV I would be concerned about the temperature rating.

 
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Old 01-21-2013, 08:57 PM   #9
audger
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If you are using the same sureflo pump that I am for my glycol system, it is no good for high temperature. the fact that it didnt explode or melt from your test is no indication that it should be used to pump high temp wort.

 
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Old 01-22-2013, 01:26 AM   #10
tlg779
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Would the concern be with the pump not lasting or the chance of getting off flavors from the hot plastic



 
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