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-   -   DIY Hopback (http://www.homebrewtalk.com/f51/diy-hopback-115210/)

Dr_Deathweed 04-21-2009 12:25 AM

DIY Hopback
 
4 Attachment(s)
Needed:

2 male 3/8" barbs
1 female 3"8" barb
1 3/8" compression cap
4 #11 O-rings
Hose clamps
stainless steel braid
1 mason jar
a couple of spare lids
Teflon tape
some spare hose


I decided to make this since I never seem to get the hop aroma I am looking for with my current setup. I figured go ahead and give this a shot, because if nothing else I am only out $20 in parts, most of which I can easily use for something else.

First I took a mason jar lid and drilled a couple holes in it. I suggest having some spares because if you don't have the lid secured or your drill going fast enough you will shred the thin metal of the lid. I used a dremel tool to enlarge the holes the slight amount needed to fit the barbs in.
Attachment 10754

One of the holes uses 1 male and 1 female barb with a couple O-rings, while the other uses the male and compression cap.
Attachment 10755

The idea here is that hot wort from the kettle comes in one side (the side with the compression cap) and leaves through the other the 2-barbed side which will have the stainless steel braid attached.
Attachment 10756

I did a simple test run with water and it seemed to work great with no leaks or anything. The leak in the picture is from the march pump since I didnt use any hoseclamps on the hoses yet.
Attachment 10757

I stopped here tonight since I need to make dinner, but my next step will be placing the braid over the dip-tube. This way I can fill the jar with my hops and fill it half full with wort, hook up my march pump on the outlet, and draw from my boil kettle, through the hop back with the march pump, and into my CFC.

After I finish making it I will do a more elaborate test run, and use it in its inaugural brew of an IPA to enter into Edworts IPA competition this summer :D I will post more pics as I go and answer any questions that may arise.

amishland 04-21-2009 01:42 AM

Nice I was just telling some one I was interested in making or buying a hopback.

bendavanza 04-21-2009 02:00 PM

My concern would be the glass breaking from the boiling hot wort. It may be a good idea to pre heat the jar.

MNBugeater 04-21-2009 03:06 PM

That is a Mason canning jar that when used for its intended purpose is boiled in an enamel canning pot to sanitize it. I suspect it can withstand boiling temperatures.

bendavanza 04-21-2009 03:11 PM

It may be a good idea to see what happens if you pour boiling water into it at room temps, or outdoor (potentially cold) brewing temps, the boiling for snaitization method heats more slowly and evenly.
-Ben

Dr_Deathweed 04-21-2009 05:07 PM

Quote:

Originally Posted by MNBugeater (Post 1273947)
That is a Mason canning jar that when used for its intended purpose is boiled in an enamel canning pot to sanitize it. I suspect it can withstand boiling temperatures.

My thoughts exactly.

Quote:

Originally Posted by bdavanza (Post 1273961)
It may be a good idea to see what happens if you pour boiling water into it at room temps, or outdoor (potentially cold) brewing temps, the boiling for snaitization method heats more slowly and evenly.
-Ben

As long as you are not going from the freezer to boiling you should be fine. I have used these jars for holding hot grease out of frier's on multiple occasions. But, in order to "prime" the system, the jar needs to have some liquid in it, which can serve as your pre-warming step for those that live in climates where it dips below 30deg more often than 1 day every 2 years :D

bendavanza 04-21-2009 06:31 PM

Very cool, I look forward to your results, this would be a very inexpensive DIY.
-Ben

IrregularPulse 04-21-2009 07:37 PM

Quote:

Originally Posted by bdavanza (Post 1274501)
Very cool, I look forward to your results, this would be a very inexpensive DIY.
-Ben

+1...

. .

. ..

samc 04-21-2009 07:50 PM

I would consider adding a round piece of steel (large fender washer?) to the top of the cap to give a more solid base for the fittings to attach.

Dr_Deathweed 04-21-2009 07:58 PM

Quote:

Originally Posted by samc (Post 1274754)
I would consider adding a round piece of steel (large fender washer?) to the top of the cap to give a more solid base for the fittings to attach.

I had thought of that but I ran into a space issue due to the diameter of the washers and the diameter of the lid with both holes. You can probable fit the washers if you use 1/4" fittings with 3/8" barbs, but HD was out of these when i went and bout the parts.

As of now, I plan on finishing this tonight and posting pictures, and doing a test brew this weekend.


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