how long should a co2 bottle last

[Peter Smith]

how many grams of co2 to carb a 19L keg...

before you  have  leak? 

[Barry]

My 5kg bottle lasts well over a year of continuous use.

[Peter Smith]

yeah i have a leak

its in in post thats there is an issue 

[Smiffy]

I use CO2 to push the beer into the keg, to carbonate it, and to serve it, and 2 kg of CO2 does me 12 x 25 litre kegs.

Smiffy

[Peter Smith]

I am pretty sure the leak is in the gas "in" post connection,   can you take the white corny disconnects apart to clean them (or soak them in something???)    I will swap out the o rings on the gas posts as well.    Just refilled a 13.8kg cylinder for $40 in Grey Lynn.  Thats 50 kegs smiffy....   maybe a while until I need to refill with luck.

I assume you test with soapy water spray to find leaks?

[Barry]

I don't think the disconnects dismantle. They're one piece no? Not sure soaking would work either – they're sprung shut.

Are you sure it's not the keg post/poppet? They come apart to clean at least.

Try some food grade silicon lube on the post, that might free things up a bit and get your seal back.

[Kevin Sharp]

Spray with Star San. It simultaneously sanitises, lubricates and identifies leaks.

[Scott H]

Aren't the gas disconnects the same as the liquid in terms of assembly. The back/top piece undoes with a big flat head and the spring and valve piece also comes out.

[Barry]

They'll be the same for sure, I thought though they were one moulded piece. Obviously incorrect, give it a nudge Peter.

[Peter Smith]

it seemed last night that the little ball at the top of the corny post wasn't sealing well.  I think a good clean out may solve my issues,   I have been using the gas bottle since December and It wasn't anywhere near as heavy as it is now its just been recharged,   I think my leak is new and probably due to bad (read no cleaning of the in/out posts,  I have 4 new o rings from BC so will lube them up and clean everything...  Have an Epic Pale Ale to carb...)   Going to brew a robust porter tonight for the WBC so will do some cleaning as I do some brewing....

[Peter Smith]

i replaced all the o rings on gas in posts, took the gas in post off and striped down no issues now.....

I have to say god I love those john guest fittings.... NEVER had an issue...

[Crusader-Rob]

I have an audible leak on the gaspost, only on connection to the disconnect, began carbing to 25 psi for force carb. and over a period of about 4-6 hours the psi dropped to 20. and i could hear a faint hiss sprayed the starsan and saw bubbling coming from under the disconnect, the seal doesnt seem to be sealing, replaced o-ring still no good.

Going to pop into where I bought it from to get a new gas post and disconnect maybe. will clean up the current one as well and see what it does.

where do i find food grade silicon lube?

FIRST KEG! DAMMIT

[Barry]

I got mine from craftbrewer.com.au, no idea if anyone local has it.