Accuflex Ultra 235 vs Kegland EVA barrier

[doug293cz]

That's when rising bubbles trigger a pour on the flowmeter. It's a bigger issue with sensitive meters (Swiss Flow) and vertical runs.

Thanks.

Brew on

 

[day_trippr]

For the record I have had 12 of those DMfit AFAB0506C cone end couplers on my six SF800s for over 18 months now.
Zero issues. And I've been regularly kicking kegs within a few ounces either side of prediction (check out the 'Pints thread).

So you can chase your unicorn or just use what I used...

Cheers!

 

[LBussy]

So I sent an email to Freshwater Systems. Generally, they are pretty helpful but this is what I got back

Good morning Lee,

Please see the following link for our fittings that could potentially work for you project:

Fittings

(hint, it's a link to a page searched with the following criteria: Push-In, Size 5/16 OD, Connection Type Female FPT)

For the record I have had 12 of those DMfit AFAB0506C cone end couplers on my six SF800s for over 18 months now.
Zero issues. And I've been regularly kicking kegs within a few ounces either side of prediction (check out the 'Pints thread).

So you can chase your unicorn or just use what I used...

Have we met?!

I'm concerned for the longer-term potential issues, and honestly, looking for "what's right." I mean, look at my sig ....

 

[day_trippr]

I see zero fittings that would work at that linked page.
The SF800 threads are definitely 3/8 BSP, a tapered thread, while the part I'm using is 3/8 BSPP - parallel thread.

JohnGuest has a 3/8" BSP to 8mm OD push-in

PM450813E

8mm

3/8"

https://www.johnguest.com/product/metric-size-threaded-fittings/female-adaptor-2/
When I did my build I could not find that part in less than 100 packs direct from the factory.
Now I see you can buy them in 10-lots on Amazon...

https://www.amazon.com/John-Guest-PM450813E-Female-Connector/dp/B00N4O3J16
Cheers!

 

[LBussy]

I see zero fittings that would work at that linked page.

Hence, my chagrin at their response.

The SF800 threads are definitely 3/8 BSP, a tapered thread

See, I thought they were BSPP (parallel), i.e. not tapered.

the part I'm using is 3/8 BSPP - parallel thread.

When I did my build I could not find that part in less than 100 packs direct from the factory.
Now I see you can buy them in 10-lots on Amazon...

It might be worth grabbing a bag - but I just ordered the 3/8 x 3/8 and the reducer.

ETA: What the hell, I just ordered a bag. It won't be the biggest waste of money I've ever made.

 

[duncan.brown]

@LBussy if it helps, DM me and I'll mail you a length of Bev Seal Ultra 235 3/8" OD. Then you can use JG 3/8 BSPP to 3/8 OD to a short length of 3/8" tube to the JG 3/8" to 5/16" reducer.

 

[duncan.brown]

Just checked and the JGs that connect to my Swiss Flows are definitely flat type, not cone type. I guess @day_trippr has had better luck making the seal with the cone type...

 

[LBussy]

if it helps, DM me and I'll mail you a length of Bev Seal Ultra 235 3/8" OD

I appreciate the offer, sir. I had them put 10' of it in the last order so I think I'm good there.

Just checked and the JGs that connect to my Swiss Flows are definitely flat type, not cone type.

Huh. Do you know the PNs?

 

[day_trippr]

fwiw, having not used PM450813E I don't know what type of backside the threaded section has. I'm interested to find out from Lee
It is the only female 3/8" BSP to 8MM or 5/16 OD tubing fitting in the JG catalog.

I just noticed that Amazon link went from four bags on hand to 1. Someone else out there?

Cheers!

 

[duncan.brown]

Do you know the PNs?

I believe they are PI451213S 3/8" OD to 3/8" BSP thread flat end. Confusingly the online catalog describes them as "BSP thread - flat end"

https://www.johnguest.com/product/inch-size-threaded-fittings/female-adaptor-bsp-thread-flat-end/
whereas the PDF catalog describes them (more correctly) as "BSPP thread - flat end."

(For people discovering this thread in the future, the BSP stands for "Her Majesty's royal pipe thread, gord bless her" and the P stands for "parallel" (as opposed to T for "tapered"). P needs a washer, and the JG fittings come with one. BSPP cone and BSPP flat are definitely different fittings, as cone has a 60 degree taper.)

Pictures below. I pulled out the o-ring from one of my spare connectors so you can see that the sealing surface behind the o-ring is flat. The SF800 is flat; there's no cone.

 

[duncan.brown]

And yes, there's no JG 5/16" OD to 3/8" BSPP flat, which is the magic part you need.

 

[day_trippr]

I'll wait to see what the "magic" part I found looks like...

Cheers!

 

[duncan.brown]

It should look like the image below. These are the metric (black) acetal copolymer fittings that are functionally equivalent to the inch (grey) ones that I use. Both have nitrile o-rings.

5/16" is the magic imperial size that almost exactly matches a metric size (5/16 in = 0.3125in = 7.9375mm = 8mm if you give it a shove)

 

[day_trippr]

lmao! Yes, indeed, it should look like that - which I posted back here
https://www.homebrewtalk.com/thread...egland-eva-barrier.668944/page-7#post-9138712
But, the question is, is it flat, or conical?

 

[LBussy]

I'll let you know as soon as the package gets here.

 

[LBussy]

Cross-Posting this from the Keg Cop thread:

I hereby declare that the John Guest PM450813E fitting to be The Correct Fitting™ for Swiss Flow to 8mm EVABarrier tubing.

There is still a "cone" (maybe better called an internal collar to locate the washer) and I just don't care enough to figure out why this is better than the DMfit one. "It just is."