gene phares (188.8.131.52)
|Posted on Tuesday, December 30, 2003 - 10:35 pm: ||
are the poppets in a particular keg both the same?
Bill Pierce (184.108.40.206)
|Posted on Tuesday, December 30, 2003 - 10:41 pm: ||
Yes and no, gene. With pin-lock (Coke) kegs the poppets are not interchangeable (they have a different pin structure for the gas-in and beer-out). With ball-lock (Pepsi) kegs, the connectors are interchangeable but the gas-in fitting normally has a 12-point nut while the beer-out fitting has a 6-point nut. They can sometimes be interchanged, although the error is not critical.
Paul Edwards (220.127.116.11)
|Posted on Wednesday, December 31, 2003 - 12:59 pm: ||
The connectors on a ball-lock keg have different size "flanges" on the them, (the angled section the flares out from the cylindrical portion). The liquid fitting has a larger one than the gas fitting. I have stainless QD hose fittings, and they definitely can't be forced onto the wrong connector. The plastic ones can, but you might booger them up in the process.
As for the 12-pt versus 6-pt. I've seen all permutations in 7/8 inch fittings. I've got a couple of ball-lock kegs that need a 5/8 inch wrench. Both gas and liquid are 6-sided on the 5/8 inch ones.
If you're talking about the the springy poppet itself, generally those are the same on both sides of the corny. Different brands have differnt poppets, tho.
Mike Huss (18.104.22.168)
|Posted on Wednesday, December 31, 2003 - 01:25 pm: ||
Bill, I agree with Paul - All of the kegs (ball-lock) in my collection have the same size hex on both the gas and the liquid fittings on each keg. There are some different sizes between kegs, but each keg is the same on both sides and all kegs have a 6 point hex on both sides as well. The only easy way to differentiate between them is the hex on the gas connector is marked with a line or a dimple.
Also, it's VERY difficult to use the QD's on the wrong posts on mine. I know because I tried on accident one time! I tried putting a gas QD on the liquid connector because I had accidently installed the connector on the gas side of the keg. Couldn't figure out why it wouldn't fit right until I noticed the connector with the marks was on the liquid side. Ooops.
Back to Gene's question, the poppets are all the same on both sides of each keg in the kegs I have.
Paul Edwards (22.214.171.124)
|Posted on Wednesday, December 31, 2003 - 02:00 pm: ||
OK, I went down to the basement brewery here at 12-Pack Technologies and looked at my kegs
I take back part of what I said. All my fittings that take a 7/8 inch wrench are 12 point for the gas-in and 6-point for the liquid out.
On my fittings that take the 5/8 inch wrench, the gas fittings are scored on the hex base, and the liquids ones aren't.
However, the other part was right. On ball-lock fittings, just down from the o-ring is a part of the fitting that flares out. The flare on the liquid fitting is larger and a slightly larger diameter than the one one the gas fitting.
The cylindrical part of the gas fitting is slightly larger than the liquid fitting.
the differences aren't much, about 0.010 inch. But enough that the QD's on the hoses can't be swapped to the wrong side.
Vance Barnes (126.96.36.199)
|Posted on Wednesday, December 31, 2003 - 02:09 pm: ||
Beware that used kegs sometimes have had the poppets replaced with the wrong poppets and may have different ones on gas and beer. I found some of my kegs had the taller poppets when they should have had the shorter ones. I wondered for a while why some kegs it was very difficult to get the fitting to go on. When I put in the shorter poppets, no problems.