Pressurinsg Sankey Kegs, first timer.

GrowlingDogBeer · Post by **GrowlingDogBeer** » Sat Jun 14, 2014 11:20 am

You should not be using ptfe at all on the threads between the bottle and the reg, and probably not between the hosetail and the reg if it is the same connection as mine.

You should only use ptfe on threads where the threaded part is what forms the seal.

The seal is creted by the two faces mating together, usually with a washerin between, all the thread is for is to tighten the faces together. using ptfe on these threads stops you being able to tighten them properly and you won't ever get a seal.

HLA91 · Post by **HLA91** » Sat Jun 14, 2014 9:33 pm

We'll re-doing the ptfe hasn't done the trick it's still leaking

I'll try removing the regulator ptfe tomorrow and if that doesn't fix it then I have gas ptfe to try after that. I just had a thought though, the way I am measuring leakage is by connecting a coupler that is not coupled and pressurising up to xyz psi then turning off the reg so that the gas is trapped between the reg and the coupler. Surely if the gas is leaking then it can't be leaking where the reg connects to the cylinder as that's before the reg shutoff valve? The gas is leaking between the reg valve and the coupler?

I will try the soapy water trick tomorrow see if that turns up anything before I remove all the ptfe

mozza · Post by **mozza** » Sat Jun 14, 2014 10:36 pm

GrowlingDogBeer wrote:You should not be using ptfe at all on the threads between the bottle and the reg, and probably not between the hosetail and the reg if it is the same connection as mine.

You should only use ptfe on threads where the threaded part is what forms the seal.

The seal is creted by the two faces mating together, usually with a washerin between, all the thread is for is to tighten the faces together. using ptfe on these threads stops you being able to tighten them properly and you won't ever get a seal.

You're right but ptfe will only lubricate the threads. It reduces ware and tare essentially and allows an extra turn if you're really tightening it up. The washer inside are what makes the seal so definitely check the condition of them

HLA91 · Post by **HLA91** » Sun Jun 15, 2014 3:36 am

The Washer looks fine it's a solid plastic one, and surely that's the wrong side of the regulator shutoff to be leaking?

GrowlingDogBeer · Post by **GrowlingDogBeer** » Sun Jun 15, 2014 7:58 am

HLA91 wrote:The Washer looks fine it's a solid plastic one, and surely that's the wrong side of the regulator shutoff to be leaking?

My shut off valves are on the outlets of the regulator. Not on the gas bottle side.

Do you have a picture of your set up then we may be able to point you in the right direction.

HLA91 · Post by **HLA91** » Sun Jun 15, 2014 8:10 am

there you go
Edit: I just tried the soapy water but nothing showed and i even increased the pressure to 2.5 bar but no bubbles showing

bobsbeer · Post by **bobsbeer** » Sun Jun 15, 2014 3:43 pm

Is your connector new? You could be leaking from the shaft of the connector. There are a couple of o rings on the shaft to seal any leaks and could be your problem. Some lubricant on the shaft o rings may help.

HLA91 · Post by **HLA91** » Sun Jun 15, 2014 5:16 pm

Coupler is new, I was losing pressure when I had cornie connectors on so I'm 75% sure the problem is the regulator as that's the only constant in this experiment. I am on the look out for a Pepsi gas board that connects direct to the co2 cylinder so I can get rid of the regulator

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