Help - John Guest 7/8" Female Adaptor?

[bear09]

Hi All.

I have perlick taps which I got from the US a while back. The shank size on these bad boys (by my maths) is bigger then 5/8".

5/8" in cm is 1.58cm (158mm). I measured the diameter of my shanks and they are ~20cm (or about 210mm I would say).

I am sick of pissing around with barbed edges and beer line. Its a bloody nightmare. I want to move to John Guest - which are a dream.

I did some reading and searching on this post http://www.aussiehomebrewer.com/forum/inde...showtopic=52705 which makes me think that there is perhaps a john guest female fitting that I can get from somewhere however after googling this http://www.johnguest.com/Home/applications...--Flat-End.aspx

am not so sure!! It does not look good for me!!!

Craftbrewer and Grain & Grape dont appear to stock them. Everything is 5/ blood 8"!!!

Am I screwed? Am I going to have to buy new shanks? I would say so huh - DAM!!!

Help please!

 

[bear09]

Forgot to add - 7/8 was as close as I could presume 21mm is...

And above I wrote 210mm instead of 21mm...

 

[stux]

FWIW I use

http://www.craftbrewer.com.au/shop/details.asp?PID=853

With my perlicks and 4" SS shanks I got from the US

They work just fine

 

[argon]

FWIW I use

http://www.craftbrewer.com.au/shop/details.asp?PID=853

With my perlicks and 4" SS shanks I got from the US

They work just fine

+1

 

[Malted]

I am watching this with interest as I too have some similar problems with gear that is LARGER than 5/8". Just highlighted, underlined and made red because that is the important part of your question. I am hearing you properly Bear.

Here's a thought. You already have a fitting with a barb and hose on it. You cant find a fitting to replace the barb assembly. Why not just leave an inch or two of beer line and insert an equal straight connecter (JohnGuest Joiner)? http://www.craftbrewer.com.au/shop/details.asp?PID=741 it gets you into the world of being able to swap beer lines etc really quick and easy.

 

[bear09]

I am watching this with interest as I too have some similar problems with gear that is LARGER than 5/8". Just highlighted, underlined and made red because that is the important part of your question. I am hearing you properly Bear.

Here's a thought. You already have a fitting with a barb and hose on it. You cant find a fitting to replace the barb assembly. Why not just leave an inch or two of beer line and insert an equal straight connecter (JohnGuest Joiner)? http://www.craftbrewer.com.au/shop/details.asp?PID=741 it gets you into the world of being able to swap beer lines etc really quick and easy.

Thanks a lot Malted... Yeah 5/8" wont cut it for me - the shank diameter is bigger then that.

You suggestion of a straigh connector is good but my biggest driver for wanting to go john guest is that I cannt seem to get my beer line over the barbed nipple without it leaking. I just cant get it on there enough. Hot water, pens, screw drivers, pliers - the pipe tears before I can get it on.

Anyone out there HELP!!!

Although I think I (we) are screwed. Smaller shanks will have to be ordered I think. Bugger it.

Ill keep bumping this post until someone who knows tells me for sure...

 

[Malted]

Thanks a lot Malted... Yeah 5/8" wont cut it for me - the shank diameter is bigger then that.

You suggestion of a straigh connector is good but my biggest driver for wanting to go john guest is that I cannt seem to get my beer line over the barbed nipple without it leaking. I just cant get it on there enough. Hot water, pens, screw drivers, pliers - the pipe tears before I can get it on.

Anyone out there HELP!!!

Although I think I (we) are screwed. Smaller shanks will have to be ordered I think. Bugger it.

Ill keep bumping this post until someone who knows tells me for sure...

There are different sized beerlines around. I'd say you should try one with a larger inside diameter. Standard beerline around the traps I think is 5/16th outside diameter and the wall thickness can vary but most are pretty thick with a smaller inside diameter.

Have a look at the size of the thread on the tap, it could be that the shank is larger because the thread on the tap is also larger (my problem with a tap I have).

 

[Cortez The Killer]

These are the ones you are after

http://www.craftbrewer.com.au/shop/details.asp?PID=853

I had the same issue when ordering and worked out that in the US they refer to the outside diameter of the thread ie 7/8 but else where the diameter is measured from the bottom of the thread ie the inner diameter ie 5/8

Refer here http://en.wikipedia.org/wiki/British_standard_pipe_thread and here http://en.wikipedia.org/wiki/National_pipe_thread

Took me a little while to get my head around it

Cheers

 

[MarkBastard]

Can you use 6mm ID line instead of the usual 5mm ID line for the length between the barb and the JG straight connector?

Will be easier to get over the barb.

 

[bear09]

These are the ones you are after

http://www.craftbrewer.com.au/shop/details.asp?PID=853

I had the same issue when ordering and worked out that in the US they refer to the outside diameter of the thread ie 7/8 but else where the diameter is measured from the bottom of the thread ie the inner diameter ie 5/8

Refer here http://en.wikipedia.org/wiki/British_standard_pipe_thread and here http://en.wikipedia.org/wiki/National_pipe_thread

Took me a little while to get my head around it

Cheers

Right, first things first those WIKI's confused the crap out of me!!!

Think Ill just bite the bullet and make a purchase for the sake of $9 and report back...

Thanks for this info though - Im now at least willing to have a try...

 

[bear09]

Can you use 6mm ID line instead of the usual 5mm ID line for the length between the barb and the JG straight connector?

Will be easier to get over the barb.

Nah Im done with mucking around with it. Its john Guest or nothin!!

Cheers mate...

 

[Dazza88]

Cut the line on an angle, put in kettle boiled water and then try shoving on to the barb.

I have the same problem (did you buy farmhouse brewing shanks?), keezer isn't assembled yet but this worked for me when I did a test run connecting it all up.

Didn't run liquid through but the line did just get onto the barb assembly on the shank.

 

[stux]

I grabbed a shank out of my latest shipment from farmhouse brewing supplies and measured it with a crappy iphone ruler...

its about 20mm in outer diameter (according to crappy on-screen ruler)

My previous farmhouse shanks fit the 5/8" BSP JG fittings I linked, and I think these are the same. I can check it a bit more thoroughly later... but I have already received the 6 JG fittings


The thing is, thread sizes are not sensible

http://www.newmantools.com/taps/bsp.htm

IANAPlumber, but 5/8" BSP does not mean the outer diameter is 5/8"... i think

Yeah, I know.

I *think* 5/8" BSP refers to the inner diameter of the original pipes that the 5/8" thread was used on in the Victorian times

 

[Amber Fluid]

If you are not sure about THESE then just ring Ross and ask him. I am certain he will give you the right answer and if it isn't what you are after then he will surely point you in the right direction.

 

[Big E]

Yeah the threading conventions can be very confusing, as a general rule when they refer to a 5/8" thread it is a 5/8" pipe thread so in other words it is a thread that goes onto a pipe with a 5/8" inside diameter. So if you measure the diameter of the thread it will be bigger. To cut a long story short as already posted you should fine with the JG 5/8" adaptor.

 

[stux]

From the wiki

"
A list of 16 thread sizes are defined by the standards, ranging from 1⁄16 to 6. The size number was originally based on the inner diameter measured in inches of a steel tube for which the thread was intended, but in the modern metric version of the standard is simply a size number.
"

ie 5/8" BSP had an inner diameter of 5/8" on the original steel tubes

 

[bear09]

AHB smashes it home once again - thanks everyone.

Bloody awesome!!!!!! Much appreciated....

 

[Ross]

Just to confirm for anyone still confused. The john Guest 5/8" Female adaptors will fit ALL Perlick shanks from the US.


cheers Ross

 

[stux]

Love my Perlicks

 

[Dazza88]

Sweet thx for the info (i am not OP), may have to invest in a few of those JG fittings.