Herms coil connections

Brewing Porn . . . Sunglasses are Mandatory!!

Herms coil connections

Postby bert7cosby » Mon Aug 24, 2015 14:47

Hi, I am starting to plan my herms coil and I intend to use a 20m roll of 10mm copper. I am pretty confident in the coiling part but I am a bit confused as the best way to connect it to my HLT, I was thinking of drilling holes just big enough to take the 10mm side of a 10-15mm brass coupler. My issue is how am I then to go about creating a seal that leaves enough of the thread for the 10mm compression fitting to be secured to the coil?
Any help with this or maybe ideas on a better way to go about it would be brill!
Thanks
Brett
User avatar
bert7cosby
Brewer
 
Posts: 53
Joined: Fri Apr 03, 2015 17:48
Location: Leicester

Re: Herms coil connections

Postby mark1964 » Mon Aug 24, 2015 15:39

we use silicone hose to connect the herms up to everything. If you want a permanent connection you could use a 10mm tank connector and just drill the middle out

ITS TIME 4 ANOTHER BEER
User avatar
mark1964
Brewer
 
Posts: 2877
Joined: Mon Apr 21, 2014 19:32
Location: yorkieshire

Re: Herms coil connections

Postby bert7cosby » Mon Aug 24, 2015 16:10

I just tried my local plumbers merchant and they don't stock 10mm tank connectors, google and ebay did not help much either
User avatar
bert7cosby
Brewer
 
Posts: 53
Joined: Fri Apr 03, 2015 17:48
Location: Leicester

Re: Herms coil connections

Postby mark1964 » Mon Aug 24, 2015 17:14

our local does its called danbys plumbing maybe search online for them
if that fails try a 10mm straight compression coupler packed either side with shower head washers

ITS TIME 4 ANOTHER BEER
User avatar
mark1964
Brewer
 
Posts: 2877
Joined: Mon Apr 21, 2014 19:32
Location: yorkieshire

Re: Herms coil connections

Postby mark1964 » Mon Aug 24, 2015 17:18

Image

thats a pic of one of the couplers on our herms pot and its watertight

ITS TIME 4 ANOTHER BEER
User avatar
mark1964
Brewer
 
Posts: 2877
Joined: Mon Apr 21, 2014 19:32
Location: yorkieshire

Re: Herms coil connections

Postby PhatFil » Mon Aug 24, 2015 18:46

fwiw i played with a herms coil a little, and found a 2m length of 10mm copper tube ample length for liquor to heat upto the bath temperature, so 20m may be a little excessive..

if a 10mm tank connector proves tricky to source use 15mm and a 10-15mm end feed adaptor.
a quick rasp with a file or buzz with a 10mm drill bit will remove the pipestop from the 10-15mm adaptor allowing you to feed tube all the way through ;)
User avatar
PhatFil
Brewer
 
Posts: 1044
Joined: Thu Apr 03, 2014 10:52

Re: Herms coil connections

Postby bert7cosby » Mon Aug 24, 2015 19:11

Thanks for the advice chaps, I actually have 10m of copper not 20m so hopefully should be ok.
User avatar
bert7cosby
Brewer
 
Posts: 53
Joined: Fri Apr 03, 2015 17:48
Location: Leicester

Re: Herms coil connections

Postby jsebright » Wed Sep 02, 2015 20:44

Am just building a HERMS pot based on new urn (ebay link) with 10m of 10mm copper that I've coiled nicely around my large gas bottle,and found these connectors (ebay link) which help it to connect to 1/2" fittings.
My plan is to not modify the urn at all - the copper coil will sit in there, and it will be controlled by a PID sensing the temperature on the outflow of the coil. Still sourcing bits though - getting more expensive due to wanting to connect in the BK as well as the MT so I can fill the urn with cold water and use it to chill and whirlpool...
User avatar
jsebright
Brewer
 
Posts: 32
Joined: Thu Aug 21, 2014 09:52
Location: Temple Cloud

Re: Herms coil connections

Postby mark1964 » Wed Sep 02, 2015 20:47

they are what we have in the herms pot

ITS TIME 4 ANOTHER BEER
User avatar
mark1964
Brewer
 
Posts: 2877
Joined: Mon Apr 21, 2014 19:32
Location: yorkieshire

Re: Herms coil connections

Postby Aleman » Thu Sep 03, 2015 11:02

You don't need 10 meters for a HERMS coil!!!!!! 2metres is more than adequate, indeed even that may well be too long

please note:The use of punctuation, bold, underlining, italics, and different sized type, follows the convention used in writing, for many years, to place emphasis on the point being made, and to highlight the importance of that point in the opinion of the author. It is not the intention of the author to shout, if that was the case the author would adopt the, much more recent, convention of using all capital letters.
Albert Einstein wrote:Two things are infinite: the universe and human stupidity; and I'm not sure about the universe.
User avatar
Aleman
Curmudgeonly Brewer
 
Posts: 2806
Joined: Thu Apr 03, 2014 00:28
Location: Mashing In Blackpool, Lancs, UK

Re: Herms coil connections

Postby jsebright » Thu Sep 03, 2015 18:45

Aleman wrote:You don't need 10 meters for a HERMS coil!!!!!! 2metres is more than adequate, indeed even that may well be too long

It's easy to order in 10m lengths though...
I may well cut mine down a bit as I've been thinking about how much might get left in the coil either during mash or cooling - approx 3/4 litre in a 10mm x 10m - I don't want that much to go to waste!
User avatar
jsebright
Brewer
 
Posts: 32
Joined: Thu Aug 21, 2014 09:52
Location: Temple Cloud

Re: Herms coil connections

Postby PhatFil » Fri Sep 04, 2015 13:33

dead space within a herms coil can be pushed through with a litre of water, it may mix a little at the wort/water interface but should enable you to retrieve 90% of the precouse liquor.

you may be able to just blow it thru too ?? depends on the plumbing .. its pre boil so the odd mouth born yeast wont be a problem..


as mentioned above tho for 100% heat exchange between an ambient bath and the liqour in the submerged coil will be performed in the first meter or 2 of tube so the rest is totally redundant.
User avatar
PhatFil
Brewer
 
Posts: 1044
Joined: Thu Apr 03, 2014 10:52

Re: Herms coil connections

Postby angelhomebrew » Mon Sep 21, 2015 01:14

I bought some SS fittings specifically for our 1/2" tube HERMS coils which are a bulkhead fitting with 1/2" BSP male thread on one side and a compression fitting on the other

Probably shouldn't post a link

Anyway, just had a thought which may open up some options and make more fittings available. You can get reducing sets for the compression end of a fitting which changes what size tube the compression fitting can work with

Google or search on eBay for "reducing set" and may provide some more options

User avatar
angelhomebrew
Vendor
 
Posts: 32
Joined: Sun Apr 20, 2014 20:18
Location: Chesterfield

Re: Herms coil connections

Postby john luc » Mon Sep 21, 2015 19:57

I suggest the reducing kits for fitting your 10mm pipe into a 1/2" fitting as they are more available than a 10mm bulkhead. I have a HERMS set up myself but I use a separate HERMS pot with 12 mm stainless steel as my coil. All my liquor water first passes through it on the way to the MT. when Mash recirculating is over and I start transfer to the boil kettle my sparge water is passed through the HERMS pot again to flush remaining wort and help clean the HERMS coil at the same time. Get great clear wort.
User avatar
john luc
Brewer
 
Posts: 141
Joined: Sat Dec 20, 2014 15:33

Re: Herms coil connections

Postby jsebright » Tue Sep 22, 2015 07:44

PhatFil wrote:dead space within a herms coil can be pushed through with a litre of water, it may mix a little at the wort/water interface but should enable you to retrieve 90% of the precouse liquor.

you may be able to just blow it thru too ?? depends on the plumbing .. its pre boil so the odd mouth born yeast wont be a problem..


as mentioned above tho for 100% heat exchange between an ambient bath and the liqour in the submerged coil will be performed in the first meter or 2 of tube so the rest is totally redundant.

I did that the first time I used it just over a week ago. Using the coil for the mash was great and improved efficiency and clarity. Trying to use the urn with the coil in as a chiller was not really very good. A rethink had me taking the coil out of the pot and using it as an immersion chiller. That worked very well and pushing all that water through it gives me confidence that it's clean.
Camlocks for connections are great and make it much easier to plumb the different parts together.
User avatar
jsebright
Brewer
 
Posts: 32
Joined: Thu Aug 21, 2014 09:52
Location: Temple Cloud


Who is online

Users browsing this forum: No registered users and 2 guests