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Home Brew Forums > Home Brewing Beer > Bottling/Kegging > Poppet disassembly question
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Old 07-22-2014, 06:23 PM   #1
tmartin110
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Default Poppet disassembly question

So I have some foaming issues on one of my kegs and decided to replace the poppets.
I purchased a universal poppet from the LHBS, but I may be over thinking the install on this. Does the new universal just replace the old poppet completely (by dropping into the post)? Or do I magically have to remove the spring from the old poppet and slide the universal onto the old post and prongs.

I cannot find how to take apart the old poppet anywhere, and mechanically it doesn't look like it's going to work.
Pin lock post, (I believe Firestone), old poppet in the center, universal on the right.

poppet.jpg  
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Old 07-22-2014, 06:27 PM   #2
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Yes. Place the o ring on the poppet, place the poppet in the narrow end of the spring, drop it into the body of the post.

Disclaimer, I've never done this with a Pin lock, but that's exactly how it worked in my ball locks.

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Old 07-22-2014, 06:31 PM   #3
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Gotcha. I was sitting in the parking lot of the store, thinking how the h#$l is this going to work. I dropped it in and it seemed to work. Just didn't want my 1st BIAB sprayed all over the place. Thanks. Hopfully, this will work on a PIN lock.

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Old 07-22-2014, 06:32 PM   #4
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^ Hopefully so. Good luck to ya!

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Old 07-22-2014, 06:44 PM   #5
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I've used the universal poppets on ball lock and pin lock posts with equally orgasmic (ok, that might be overstating a bit) success. I'm sure you'll be happy.

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Old 07-22-2014, 10:04 PM   #6
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I've never had good luck with those damn universals, so I always replace with the proper poppet. The cost increase is negligible. 5 gallons of beer and peace of mind are both worth way more than a buck or two.

If I don't know what kind I need, I just bring the post/poppet to my lhbs.

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Old 07-22-2014, 10:28 PM   #7
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I've replaced almost all my pinlock poppets (both Firestone and Cornelius) with the universals and absolutely love them. There was a post a while back about possible flow restrictions with the universals due to the way that they seat/function in the assembly, so if you notice that your pours are slower that's likely the culprit. AFA I know, there's two variations of the universal, one with a rounded shoulder on the poppet side for the O-ring (this is the good one) and one with a "V" or sharp shoulder on the poppet o-ring side (this is the bad one). Most issues have been reported with the "V" universals.

As soon as my LHBS get them back in, I need another 4 sets.

FWIW, the universals will seal better than the standard poppets due the amount of surface area on the oring. As a bonus, the oring is replaceable also.

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Old 07-22-2014, 10:37 PM   #8
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I've also had mostly sketchy results with universal poppets. I ended up relegating the few I have to functions that are non-critical (eg: the post on my CO2 push rig and the posts on my line cleaners).

The problem I've had is the little o-ring will come off the spring-loaded metal slug when coupled, then when uncoupled the slug will drive some part of the o-ring up into the post hole. When it happens with the Out post on a pressurized keg it's darned difficult not to conclude that poppet should ride the pine forever (if not meet a swiftly administered ending).

A couple of years ago a manufacturer of one style of universal poppet came on the forum and explained why his design keeps that o-ring from slipping off the metal plug. I've never seen them for sale locally, lost interest in the whole concept and went back to oem style poppets when needed. Between ChiCompany and MB you can usually find direct replacements...

Cheers!

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Old 07-23-2014, 04:01 AM   #9
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Thanks for the info folks. Reassembled the keg and have Starsan running through it. So far so good. Hope it helps with my foaming issue. We'll see in a week or two.

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