There are at least a couple manufacturers of Ball Lock Quick Disconnects out there. In my book there is… CMBecker and everyone else. With orders over the years, I have mostly received CMB brand QDs, but periodically, I’ll get an off brand. Don’t get me wrong, all of the off brands I’ve received have worked fine. They just don’t look or feel as well made and they don’t seem to engage and disengage quite a smoothly.
With all that being said, I prefer CMBecker QDs.
I placed a recent RiteBrew order and the pictured QDs appeared to be CMB although the product description didn’t specifically mention the manufacturer. I’m happy to report they are the real deal.
Check out RiteBrew’s Full Lineup of Keg Couplers – ball lock QDs from… $4.29
Here’s a quick look at CMB’s ball lock QDs with some thoughts about barb vs MFL and a look at the o-ring.
Top down look – You can see the NSF Certification Seal
Gas QD side view shows CMB
Liquid QD side view shows CMB
MFL vs Barb. My guess is that, generally, people prefer MFL flavors of QDs. The big advantage is being able to easily disconnect and reconnect tubing. That’s nice. I prefer those for the liquid side. Although I have MFL gas QDs, I generally prefer barbed QDs for the gas side of things. If an MFL liquid line works it’s way loose, a slow leak or drip is visible. That’s an easy fix. That’s not the case with gas. If an MFL gas line works it’s way loose leaks are, of course, invisible. Although they are a little more work, I like barbed QDs for gas runs in my kegerator.
These QDs have an internal o-ring gasket that keeps liquid and gas from leaking out the top side. Those are relatively expensive at about 50 cents each – [Here KEG700A from MoreBeer]. There is different (non-OEM) gasket available that works well…
On the left is an OEM o-ring on the right is a dash-013 silicone oring. As you can see the silicone o-ring is slightly larger.
Here’s my attempt to show the difference in thickness. Probably not a lot of help. Sufficed to say the non-oem option is a little thicker.
Silicone o-ring in the QD
Finally with the cap tightened down. Notice the cap is slightly above the QD body.
They aren’t exactly the same, but they have worked great for me for quite some time and they are generally less expensive (on a per piece basis) vs OEM.
Keg Couplers at RiteBrew
013 Silicone O-Ring, 70A Durometer, Red, 7/16″ ID, 9/16″ OD, 1/16″ Width (Pack of 100)
Keg Ball Lock or Pin Lock Quick Disconnect Replacement O-Ring Gasket KEG700A
Pinned: Stanley Growler · $45 Ball Locks! · Blichmann Sale · ProFlow Sitewide Sale
Also from RiteBrew: Recipe Kits from… $14.29 · Omega Yeast – Vermont DIPA – Conan, Heady Topper & More · Universal Poppets… $2.39 · Vanilla Beans · Great Prices on CO2 Manifolds · 8 LBs of PBW – $5.30/lb · Great Prices on Bags of Malt · Fresh Wyeast Pre-Order · Bargain Bin
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