Going Nitrogen

[Tony]

Great that you and Bribie are getting these Tony, will be awesome to be able to discuss Nitro - it's the favorite part of brewing for me. Will warn again though, keep your eyes on that beer gut :icon_drunk:

hahaha the eyes on the beer gut hey............. every time i crack a new keg i put on a kilo going..... Oooooo Ahhhhh and then lose it as i realize I'm drinking it too fast and revert to salad and "just a few"

Now......... some serious talk!

I have hit a snag and one i want to let anyone looking at getting into this know about cause its not something you think about till you go....... "OH F@$K IT!...... YOU ARE F#%KING KIDDING ME" at the top of your voice and the spanner goes flying across the room hitting the wall very hard!, and your wife and kids come running to see the blood and leave disappointed

I removed the stock nitrogen shaft that fits to the bottle, that came fitted to the regulator, and tried to fit the adapter i purchased from PMC Gas Control. The bottle end fitting is perfect but the 1/4 BSP thread is not!

The adapter shaft has a normal RH 1/4 BSP thread but the regulator High Pressure side port is a LH 1/4 BSP thread.

****!

I checked my Micro Matic Co2 Reg and its a LH 1/4 BSP thread as well.

Sooooo the adapter don't fit the regulator...... but aparently it fits in a Harris reg...... they must have a RH thread on the high Pressure port side

I made a phone call to PMC and they said they will look at making me a LH threaded version of the adapter.... they will get back to me tomorrow.

Pics:

Origional on top....... replacement adapter to fit the BOC 073 VT bottle.... bottom

Origional right..... replacement adapter, left

here you can see the difference between the RH and LH thread

and the kick in the guts came when i read this:

 

[dmac80]

If you get stuck mate i can make an adapter in the lathe, for a price of course.

 

[Tony]

for a price of course.

Dude...... i know where you live

 

[dmac80]

Dude...... i know where you live

Then you know where to bring the beer...

 

[Tony]

ha....... you know where where it will be on tap

 

[Bribie G]

lathe bulk buy?

 

[Tony]

no need old mate......... Baldrick has a cunning plan

 

[bigfridge]

If you get stuck mate i can make an adapter in the lathe, for a price of course.

Hi Tony,

I think that you need to be a little carefull mate when playing with these gases as there are different pressures involved.


CO2 is liquid and boils off into the gas at around 600 PSI at room temperature. Nitrogen remains as a gas in the cylinder and is at a much higher pressure. I am not sure what the tank pressure is off the top of my head, but it is similar to Oxygen which is around 3000 psi.

This is why I beleive that the regs all have different threads and fittings.

 

[Logman]

Well that sux! Mines a BOC too but the adaptor went into the reg a different way - I took a look and it seems they are all right hand though, gauges etc.

It's worth the wait mate! :icon_drool2:

 

[Tony]

Hi Dave..... thanks for your concern.

Im aware of the higher pressures, thats why i got a propper nitrogen regulator, and the adapter is being made by a regulator company so it should be fine.

They are making me a new adapter with LH thread today so should have it before the weekend

The adaprer is actually much thicker construstion than the origional unit that cam off the regulator.

now all i need is stout

 

[Bribie G]

Ah stout.... I checked my FES today in primary (been sitting at 18 for about 10 days now) and it had developed the dreaded chalky film Should have been less lazy and whacked it into the -1 fridge.
Tasted fine so I bottled it instead of kegging to be on the safe side, discarded the last few litres - hopefully it's an aerobic mould or whatever that hasn't penetrated into the beer.

Now I'll have to brew up a quick Tetleys so I can do some smoothflow when I get my own kit assembled

 

[dent]

So these nitrogen mix bottles are not liquefied? That would mean you would end up with much less gas in the same size bottle compared to 100% CO2 if that is the case.

How does the actual "nitrogening" process work with this? Does simply keeping the (previously CO2 carbed) keg under high (?) pressure N/CO2 mix dissolve enough N in there?

 

[Ross]

Hi Dave..... thanks for your concern.

Im aware of the higher pressures, thats why i got a propper nitrogen regulator, and the adapter is being made by a regulator company so it should be fine.

They are making me a new adapter with LH thread today so should have it before the weekend

The adaprer is actually much thicker construstion than the origional unit that cam off the regulator.

now all i need is stout

Tony, if you've bought a proper nitrogen reg, why do you need an adaptor? it should screw straight on.
Dave, A regular CO2 regulator works fine with the cellar mix, as long as compatable threads.


cheers Ross

 

[Bribie G]

While I've got the egg spurts on line B) - a couple of questions I haven't had a definitive answer to:

Say you have a corny of Guinness lookalike. Do you need to pre-carb it on CO2 before putting it on Nitro, or does the much higher pressure of the 70/30 Cellar gas mixture ensure that enough CO2 is pushed into the beer in the keg anyway, so can you just put the keg of flat beer onto nitro from the beginning and it fizzes up?

What is the effect of pouring a lager on nitro through a regular tap such as a perlick. (as opposed to a stout tap) Not interested in a creamy head with shamrock design lovingly laid into the foam, just getting it into the glass.

 

[Ross]

While I've got the egg spurts on line B) - a couple of questions I haven't had a definitive answer to:

Say you have a corny of Guinness lookalike. Do you need to pre-carb it on CO2 before putting it on Nitro, or does the much higher pressure of the 70/30 Cellar gas mixture ensure that enough CO2 is pushed into the beer in the keg anyway, so can you just put the keg of flat beer onto nitro from the beginning and it fizzes up?

What is the effect of pouring a lager on nitro through a regular tap such as a perlick. (as opposed to a stout tap) Not interested in a creamy head with shamrock design lovingly laid into the foam, just getting it into the glass.

Beer must be pregassed with CO2 a l;ittle under your regular carb level. Rock for 20 secs at 300kpa should put you on the money. The more you pre carb it the more foam & the longer it will take to settle in the glass - adjust to your preference.
The beers are then poured at 200kpa through the stout tap. Smooth pour lagers are quite popular now in the UK, as they are easier to drink being less carbed. If you pour at 200kpa with a regular tap you'll be wearing it - LOL.

cheers Ross

 

[Tony]

Hey folks.

I posted these pics in Whats in the glass.......... but i feel they should go here too for histofial purpose, and i want to keep this thread going with development and fine tuning of the nitro pour system.

I had 17L of 6% ESB sitting on primary in a fridge at 4 deg c. Used 1469 so it was bombed out clear.

Dumped it in a keg, hooked up the nitro bottle @ 150kpa and shook it for about a minute.... untill it stopped taking on gas.

hooked up the lines, and the tap, and poured this:

Yep...... it works

happy man i am!

 

[Bribie G]

mmmm nitrooogen

Needless to say I'll be annoying the shyte out of you when I move just to the North of you in a couple of months B)

 

[Tony]

mmmm nitrooogen

Needless to say I'll be annoying the shyte out of you when I move just to the North of you in a couple of months B)

Always welcome for a beer mate!

PM me some details!

 

[MattC]

OK, I’ve had a read of this thread and I’m thinking of giving
this Nitro thing a go but just want to clarify a few things first.

The BOC product I’m after is called multimix, product code
037 (70% N and 30% CO2). The VT cylinder has a type 50 attachment which is
compatible with CO2 regs if you fit an adaptor from PMC? Anywhere else supply these adapters?

If I get a Harris reg, the adapter (RH thread) will fit
fine, but if I get a Micromatic reg, I will have to order a custom build
adaptor with LH thread?

Also you carb the beer normally with CO2 then dispense with
multimix at approx 200kpa with a stout tap. I thought I read that Tony carbed
with the multimix itself, if this is so and you can carb with either multimix
or CO2, what differences could I expect? I’m guessing if just dispensing with
the multimix, then it would last for ages.

 

[Logman]

Also you carb the beer normally with CO2 then dispense with

multimix at approx 200kpa with a stout tap. I thought I read that Tony carbed
with the multimix itself, if this is so and you can carb with either multimix
or CO2, what differences could I expect? I’m guessing if just dispensing with
the multimix, then it would last for ages.

Take a look at this thread. I posted a month or two back about the head increasing in size as the keg was being consumed - a few guys replied with the same issue. Originally I rolled the keg on the ground for 30 seconds with Co2 and then left it to age and hooked it straight onto the nitro and drank. One of the guys (who sounded like he works in a bar) suggested just hooking it up to Nitro and leaving it (no Co2). Since then, I do no rolling around and just shoot some Nitro into the keg to bleed the oxygen and leave it to age, then hook it straight to the Nitro in the keezer and leave it to balance a few days - works much better and have had no issues since.

I think Tony would know for sure about the reg as he had a lot of stuffing about IIRC so PM him if he misses the thread.