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Variable Speed Diaphragm Pump (0-3 GPM)
H308
In Stock
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Description

When siphoning is impractical or too time consuming, the home winemaker needs a pump. We helped pioneer the use of diaphragm pumps as an economical, gentle method to move small volumes of wine.

This new take on an old favorite includes speed control. Now you can dial in the flow from 0 to 3 gallons per minute. Gentle, economical, flexible, and wow are all adjectives we would use to describe the performance.

When this pump was first introduced to us, we loved the idea, but had concerns that the speed control would compromise the longevity of the motor. We build much larger pumps (our ChunkyPumps for commercial wineries) and normally you need a $700 frequency drive to control motor speed. However, we kept in touch with the manufacturer and after three years in which he has not had any issues, and after our own testing, we are now sold that this pump performs as promised. The manufacturer offer a 1 year warranty.

A diaphragm pump works by moving wine through one pulsating diaphragm into the next. In this design, as opposed to a centrifugal pump which has a small head spinning at high speeds, the shear value is small meaning the wine is not as "beat up". A diaphragm pump is self-priming, meaning that it will "pump air" creating suction that will pull liquid out of your container and into the pump head. This makes the pump very easy to use for the home winemaker.

  • This pump comes with 1/2" barbed ports for easy connectivity. 
  • Comes with 6' tubing on both sides.
  • 110 Volts, 0.5 Amp, 60 Hz.

Includes a built-in pre filter to help prevent solid materials from entering the pump head and potentially damaging the diaphragms, which would prevent the pump from being able to move liquid. The clear plastic top of the pre filter unscrews for cleaning. Please note that some customers have had trouble unscrewing this cover to clean their filters. We suggest using a standard strap wrench if you are having difficulty with yours.

 

Item # H308
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 8LBS
Community Q&A

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Browse 3 questions Browse 3 questions and 19 answers
Why did you choose this?
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variable speed
Darren M on Aug 7, 2018
pump over mead must i hope
geoff resney on Jun 26, 2018
variable speed
Darren M on Aug 7, 2018
For water recirculation during distilling
K. Wayne P on Jul 9, 2018
pump over mead must i hope
geoff resney on Jun 26, 2018
need for a variable pump for bottling.
Thomas R L on Jun 26, 2018
Looking for a good pump for carboys and small barrels
Thomas H on May 22, 2018
looking for a gentle wine transfer pump
Normand R on May 18, 2018
Wine volume to big to rely
Alan T on May 18, 2018
Want to make racking a little faster process.
Dennis B on May 18, 2018
I trashed my old pump
Bradley C on May 17, 2018
I use this pump to rack my wine off various size barrels during aging. works well
Jeffrey W. B on May 17, 2018
I want a gentle pump for my wine. Also, this pump was recommended by another winemaker.
Vance H on Apr 21, 2018
Thought this would make kegging go faster and allow me to pump through filter without co2
Justin Maksim on Apr 20, 2018
least expensive choice that serves our need.
David G on Mar 31, 2018
self priming for high temp liquid
Eric Albrecht on Mar 31, 2018
USE TO EMPTY FERMENTER
JIM T on Mar 22, 2018
reliable, price, and I use two of them to pump 6 gal per hour.
Steve Bernal on Feb 16, 2018
I needed a transfer pump that did not introduce oxygen into my fermented beer
Michael Gordy on Jan 30, 2018
For water recirculation during distilling
K. Wayne P on Jul 9, 2018
need for a variable pump for bottling.
Thomas R L on Jun 26, 2018
It says in the product description that the pump can handle liquid temps up to 212F with silcone tubing, but the instruction manual says that liquid temps shouldn't exceed 130F. Can this pump handle temps up to 212 with proper hosing?
Bill Rittenour on Feb 16, 2018
BEST ANSWER: Yes, as long as you replace the tubing that comes with the pump with tubing that can handle over 212 degrees.
I used my pump for the first time to move ten gallons of beer to the kegs and it foamed up bad I’m afraid that this batch will be oxidized. Is there a fix for the foaming problem?
Russell Chance on Jul 6, 2018
BEST ANSWER: Hello Russel - Sorry for your loss. It seems best to have the pump ABOVE volumes of liquid being moved. Allowing the diaphragm to fully prime the pump and head without air-bubbles trapped during transfer.
Reviews

4.4 / 5.0
30 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
20
5
3
0
2
Used it to rack 5 30 gallon barrels. Worked great, was able to turn the speed way down where it was almost like a gravity rack.
July 31, 2018
Purchased
3 weeks ago
Nice pump
I have only used it twice so far and it works great. I really like the variable speed. I found the adjustment range is a little small but you get used to it and now I ok with it. Clean up is easy. The quick connections work great.
June 9, 2018
Purchased
2 months ago
Variable Speed Transfer Pump
This pump works very well. I've used it three times now. I have learned to have both the fermenter and the carboy lower than the transfer pump. The last time the fermenter was on the counter with the transfer pump and the carboy on the floor. What happened was the air in the pump head and filter was never complete expelled, and I had a constant aeration of the wine. This is a much faster way of transferring wine, and I may want to come up with an adapter for the siphon hose to keep it off the bottom of the fermentator so less trash is pulled in.
June 8, 2018
Purchased
2 months ago
How did I go without
I thought about ordering this for a while until I spoke with a friend of mine who had one. He said how wonderful it was so I decided to order it finally. I am so glad that I did because it made the entire racking process so much easier! You can get a very precise top off with the variable speed. One tip I would give is to get a piece of 3/4" PVC pipe with a cap on the end and then drill some holes up off the bottom a little. Then slip the heavy wall suction tube down into the pipe. This make it so easy to stay off the bottom the perfect height and also makes it rigid like a cane because the suction tube fits snugly into the pipe. Love this pump and if you're thinking of ordering, just do it because I know you'll be satisfied.
June 1, 2018
Purchased
2 months ago
Variable speed pump
Great little pump. Works as described.
May 30, 2018
Purchased
3 months ago
seems to work fine
Have used it once to rack 6 gallons of wine from a secondary fermenter into another one. The variable speed was really helpful in preventing the transfer of sludge from the bottom, allowing a more delicate control. Haven't used it yet to transfer from a primary fermenter where oak chips and lots of sludge might be a challenge. The best part is not having to lift about 50 pounds of liquid straight up onto a counter top.
May 12, 2018
Purchased
4 months ago
An OK pump.
This little pump is useful for topping wine barrels or for transfers of small amounts of wine. The tubing included with the pump seems to be of non-standard size, and the speed control goes from zero to nearly full speed fairly quickly, so a light touch is needed on the speed control. Otherwise a good pump.
May 2, 2018
Purchased
6 months ago
works
Used the pump several times now and gave it five stars because it's performing as advertised. A bit of food grade silicon grease on the filter threads helps. Be careful re-fitting the filter screen as it can be crimped. Does have to be anchored to a board, the hoses are stiff. Very handy.
February 23, 2018
Purchased
7 months ago
Makes Shirt Work of Wine Transfers
I am very happy with this pump. It is easy to sanitize and clean, and it makes racking quick and simple. I’m not sure what I would do without it.
February 8, 2018
Purchased
7 months ago
Pretty good
So far so good on the second pump delivered. First one was broken where the filter attaches to the pump. It runs great but feels fragile
February 4, 2018
Purchased
7 months ago