Advice on re-circulating run-off with a pump.

Buying, building and using brewing equipment and apparatus. Product reviews and questions.

Moderator: slothrob

alcohol and memory...

Postby cyrilleb » Wed Aug 25, 2004 11:15 am

Only joking (lol).

Thank you for the model number. Grundfos e-mailed me and proposed the UP20-15N. stainless body, etc.; max head: 4ft; 2.6 GPM @ 3ft; 5.2 GPM @ 2ft; 7.4GPM @ 1ft.
My main concern though is that the performances are much lower than your pump or the likes of the little giant. Do you think this pump is too weak?
I sent another request with your model number as a reference, they must have a European (220V) equivalent. But I don
Posts: 8
Joined: Thu Aug 12, 2004 1:04 pm

It is always hard to get enough head ;)!....

Postby Mesa Maltworks » Wed Aug 25, 2004 4:00 pm

That is a bit too low of a flow. Here's why: Using a 15 gallon keg setup as an example, they are about 3.5' tall. So, a valve at the base would drop down to a valve ahead of the pump, + a 90 deg. elbow (adds resistance), then a short nipple, another 90 deg. elbow (more resistance), then a rise up to the pump inlet of about 8", then about 4.5' feet to the top of the keg and then 2 more 90's and a valve (more resistance). This estimated head totals around 5.5'. That pump won't lift the load in this example as it's maximum head is 4'! The other one, however, is rated 5.1 GPM @ 5', so you'd probably get 4.5 GPM @ that head. They do make another step up, but it is around $200 USD and would be a bit of overkill for this use.

Another consideration is that you can build a system that will recirculate runoff, pump sparge water and pump runoff to the kettle using only 1 pump. The change over is acomplished by opening and closing valves. The other pump would stop pumping wort into the kettle when it was less than half full due to the back pressure of the liquid. The pump I recommend will fill it at full throttle.

Make your next beer (or spirit) a local one!!!!

Eric Watson
Head Distiller & Brewer

Seven Fathoms Rum
Georgetown, Grand Cayman
Cayman Islands
User avatar
Mesa Maltworks
Strong Ale
Strong Ale
Posts: 477
Joined: Tue Sep 11, 2001 11:16 pm
Location: Georgetown, Grand Cayman Island

in conclusion

Postby cyrilleb » Tue Aug 31, 2004 7:57 am


As far as my pump goes, I bought a Shurflo 2095-473-143. 24VDC, 10.6LPM max, 8LPM @ 2 bar
Posts: 8
Joined: Thu Aug 12, 2004 1:04 pm


Return to Equipment

Who is online

Users browsing this forum: No registered users and 2 guests