Purging oxygen from a pin lock keg

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earwig

earwig

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I bought of nifty thing that you can use to purge the keg but I am confused...you have to take the gas line off to use it. Would I just let it pressurize with c02, take off the line, purge it, and then put the line back on, and leave it on to carb the beer?

Thank you.
 
Leave gas line attached at low pressure and purge by manually opening pressure relief valve on keg lid. Air (I assume you mean normal ambient air not actually O2) is lighter than CO2 so will be pushed up and out as CO2 enters keg.

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Pretty much right.

I like to put Co2 into the "liquid" side, going down the dip tube, pushing c02 up from below.
 
My keg lid doesn't have a release valve. I suppose I need to purge it, put the gas line back on and repeat but how many times? I can't put the gas line on the other side because it's a pin lock keg and it only fits on one side.
 
earwig said:
My keg lid doesn't have a release valve. I suppose I need to purge it, put the gas line back on and repeat but how many times? I can't put the gas line on the other side because it's a pin lock keg and it only fits on one side.
Click to expand...

I use only pin locks (started with one, decided to keep them all the same). What I do is just the tedious process of pressurizing the keg, remove the gas line and use my thumb to push down on the valve to let some air out. Repressurize, remove, purge. I do this about 3 times before I feel satisfied enough there's no air. In all reality, once would probably suffice.
 
Some good ideas for CO2 accessories stpug. Might have to add a couple of your ideas to my toolbox.

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I also have pin locks, but one of my lids does have a PRV. I try to use that one as much as possible so I can purge the air out of the keg. When that lid is already in use, I have to remove the gas QD to purge the keg. It's not a big deal.


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Why not put an in-line disconnect in your air line. Attach another disconnect to a bev out disconnect and you could easily swap them out and use the bev out side to put co2 in.
 
Interesting, did not know that some pin locks don't have a PRV. Do they have no meams of dealing with overpressure? Seems like a potentially bad idea.


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Curtis2010 said:
Interesting, did not know that some pin locks don't have a PRV. Do they have no meams of dealing with overpressure? Seems like a potentially bad idea.
Click to expand...

They have a fuse-like safety device screwed into the lid, and once "tripped" it has to be replaced. It's plastic and when the pressure exceeds the predetermined value, the plastic device gives way and releases the pressure. You then have to buy a new plastic screw piece and replace it.
 
One of these came with my kit when I got my keg from kegconnection:
It's a pretty handy little tool for pin lock people.
PINLOCK_PLUG_DEPRESSER__61033.1360849309.1280.1280.jpg

http://www.kegconnection.com/pin-lock-keg-poppet-valve-depressor/
 
Curtis2010 said:
.... Air (I assume you mean normal ambient air not actually O2) is lighter than CO2 so will be pushed up and out as CO2 enters keg.....
Click to expand...
IMO, a common misconception. Because of turbulence, the air and injected CO2 readily mix and become homogeneous. This activity would be more accurately referred to as diluting the air with CO2. It certainly works to reduce the oxygen to acceptable levels in the keg, but there is no stratification of the air and CO2 while performing the action.
 
Curtis2010 said:
Interesting, did not know that some pin locks don't have a PRV. Do they have no meams of dealing with overpressure? Seems like a potentially bad idea.


Sent from my GT-P5110 using Home Brew mobile app
Click to expand...


I am a big boy. What pressure do they vent at? I occasionally pressurize as high as 65PSI to burst carb.

Also my pin locks unscrew and can go over the tube or not. Easy to switch a gas in from an unused keg or switch them on the same keg.

Also, having the CO2 come in the dip tube is still just mixing, but I bet it is one hell of a lot more effective than dumping CO2 on top of the
O2.
 
cheezydemon3 said:
I am a big boy. What pressure do they vent at? I occasionally pressurize as high as 65PSI to burst carb.

Also my pin locks unscrew and can go over the tube or not. Easy to switch a gas in from an unused keg or switch them on the same keg.

Also, having the CO2 come in the dip tube is still just mixing, but I bet it is one hell of a lot more effective than dumping CO2 on top of the
O2.
Click to expand...

This seems super tedious. I just rack from my fermentation vessel to my keg using longer tubing that will touch the bottom of the keg. This will minimize the amount of O2 hitting my beer to avoid oxidation. This being the case only the head space needs to be purged to remove any excess O2. Displacing the O2 is very easy if you use one of the tools aspiffymofo posted. They are cheap alone and come free when you by from kegconnection.

Removing the liquid out line to put a gas in seems unnecessary or getting a dedicated liquid post only for gas purges doesn't sound quite right. I don't mean to come off as insulting, just seems like more work than needed.
 
lousbrews said:
This seems super tedious. I just rack from my fermentation vessel to my keg using longer tubing that will touch the bottom of the keg. This will minimize the amount of O2 hitting my beer to avoid oxidation. This being the case only the head space needs to be purged to remove any excess O2. Displacing the O2 is very easy if you use one of the tools aspiffymofo posted. They are cheap alone and come free when you by from kegconnection.

Removing the liquid out line to put a gas in seems unnecessary or getting a dedicated liquid post only for gas purges doesn't sound quite right. I don't mean to come off as insulting, just seems like more work than needed.
Click to expand...

The pinlock connects screw off pretty easily from the hoses for that matter.

I syphon with a hose at the bottom too, I think everyone does. Purging is a step further.
 
cheezydemon3 said:
The pinlock connects screw off pretty easily from the hoses for that matter.

I syphon with a hose at the bottom too, I think everyone does. Purging is a step further.
Click to expand...

Yeah I hear ya! Just trying to avoid more work lol. Once again I will state I'm not trying to sound pompous or anything.

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