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tlg779 01-19-2013 05:37 PM

pumps
 
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

mrrshotshot 01-19-2013 05:42 PM

Got a picture? My experience with diaphragm pumps is through chemical injection. How fast can it pump?

tlg779 01-19-2013 06:16 PM

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

tlg779 01-19-2013 06:59 PM

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

mrrshotshot 01-19-2013 07:07 PM

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.

tlg779 01-19-2013 07:13 PM

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

cracked1 01-20-2013 03:48 PM

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.

nasty_rabbit 01-20-2013 11:14 PM

Quote:

Originally Posted by mrrshotshot (Post 4803518)
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.

audger 01-21-2013 07:57 PM

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.

tlg779 01-22-2013 12:26 AM

Would the concern be with the pump not lasting or the chance of getting off flavors from the hot plastic


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