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Item #: L21
Our Price: $69.99
In Stock, Will Ship On 02/24/2018.
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The best deal we have ever found in a highly efficient counterflow chiller! This 25' pure copper pipe unit features 3/8" hose barbs for both wort and chilling water, and is an extremely efficient chiller, capable of chilling 5 gallon batches in one pass, as long as your cooling water is 60° F. or less. Easier to clean than a plate chiller, and much more efficient than an immersion chiller. This can be pump or gravity fed. 

Connection tubing and fittings are not included: use 3/8” inner diameter vinyl (our item E04, sold per foot) for the cooling water and 3/8” inner diameter silicone tubing (our item J46) for the wort inlets and outlets. As this is a counterflow chiller, be sure to connect the cooling water inlet to the same end as the cooled wort outlet. 9¾” diameter, 10” tall.

If you need parts to convert your Robobrew or Mash & Boil to a 3/8" outlet barb so this tubing will fit the outlet, order one each of parts L86 nut, L11 Silicone O ring, and L83 3/8" hose barb. This assembled threaded hose barb will fit both the outlet of the Mash & Boil valve, as well as the outlet and upper pump outlet of the Robobrew.

See item Q96 if you need a complete hose connection kit for most applications.

IMPORTANT NOTE: The outer cooling jacket is not designed to withstand high pressure, so do not connect this to your house water pressure without the outlet of the chiller being open.


Average Rating:
(based on 4 reviews)

Showing 4 Reviews:

Review and Rate this Item
by Ken
on 1/24/2018
from TX
Counter flow review
First time I've ever used a counter flow, AWESOME!!! The flow thru thermometer showed 70 degrees into the keg. So much faster and easier than immersion chiller.
by Edgar
on 10/2/2017
from Boise, Idaho
Counterflow Wort Chiller
First, if you are using a garden hose from an exterior hose bib, put a flow restrictor in front of the cold water in, so you don't rupture side wall of the chiller like I did. Williams stood behind the product so it really wasn't a big deal, just an inconvenience to me. Even with the chiller sidewall blown out, this chiller chilled my wort to yeast pitching temperature in less than 30 minutes. Works perfectly and efficiently, on my next batch I'm going to attempt to run the child wort directly to my fermenter instead of back into my brew kettle. I believe that one pass through will bring a boiling wort to less the 70 degrees, of course, that would depend on the temperature of your cold water. 
by Jon Sharrock
on 9/1/2017
from Washington
Chiller works great
Have only brewed one batch so far but this brought my wort from 200 degrees to 76 in about 15 minutes.  I had to rig up some stainless steel compression fittings, ball valve and in line thermometer to make it more convenient to use. Welds look good and no leaking.
by john
on 9/1/2017
from oklahoma
Extremely great valued product!
Eventhough I haven't used it yet, this is a very high quality made counterflow chiller that allows you to customize the fittings of your choice. At an affordable price I couldn't pass! I'm looking forward to using this with my upgrade to all grain brewing which I will be starting up this fall after my summer sabbatical.
Review and Rate this Item
10/4/2017 3:45:18 PM
I hope this is not a dumb question will this work with the Mash and boil?
Yes, you can attach it below the valve and let the hot wort run out into a fermenter below. You will need to elevate the Mash & Boil sufficiently to have enough room under the unit for both the Keg King Counterflow and your fermenter.
10/1/2017 3:12:04 PM
What connections are needed to fit this to a garden hose?
You will need an E67 3/8" hose barb to female garden hose connector. Screw this onto a male garden hose fitting. Then you will need a suitable length of 3/8" interior diameter tubing (item E04, order per foot) and a couple hose clamps (item E41).
9/26/2017 7:35:43 AM
Does the end of the copper have actual hose barbs, or are the just straight 3/8" copper? I am trying to plan putting camlock fittings on and would like to solder dielectric fittings to get to 1/2" NPT. Would this be possible?
They are just straight copper, which with hose clamps, work like hose barbs.
9/7/2017 5:20:23 PM
What fittings would allow someone to attach a wort thermometer and possibly a ball valve to the wort outlet?
Not yet, but this is a good idea.
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