Stainless Steel Carbonation Caps – for PET Bottles or Draft Line Cleaning Pump – $10.73

Carbonation Cap With 1/4 In Barb

Stainless steel ball lock carbonation caps with 1/4″ barb.  These are intended to convert 1L and 2L bottles to pressurized growlers.  Fill up a 1L or 2L PET bottle with your beer.  Put one of these on (purge the head space by squeezing if you want to) and then pressurize for transport.  You can also use this cap to rapidly carbonate beer.  Same process as for transport, just shake it up until it’s carbonated.

The last time (that I can find) that I had something like these on, they were selling for $12.80.

These are selling for $7.99 with $2.74 shipping.  That figures to $10.73 Shipped.

Check them out – Here – These apparently have a few scratches on them from shipping.  Check out the product description.

Another use…

I have a Recirculating Draft Line Cleaning Build that I’ve used for a long time.  I just purchased one of these to try out as a replacement for all the ball lock fittings, connectors and barb.  If this works (which I think it will), you would just need the stainless carbonation cap connected to tubing connected to the submersible pump.  This takes a lot of cost out of the build.

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4 thoughts on “Stainless Steel Carbonation Caps – for PET Bottles or Draft Line Cleaning Pump – $10.73

  1. Bryan

    Thoughts on connecting the 1/4″ barb to a 3/8″ pump? I’m assuming heat up some 1/4″ tubing and stretch it over the 3/8″ barb.

  2. Bryan

    Though there are similar items on eBay that claim to be machined to work with gas or liquid disconnects.

  3. Bryan

    Peter has a point… These caps are for gas so they won’t connect to the liquid disconnect.

    You could swap out the liquid disconnect for a gas one and clean the line but you’d skip the disconnect obviously.


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