Item #: R64
Our Price: $14.99
In Stock, Will Ship On 01/27/2020.


An all stainless male gas ball lock cap that fits 38mm plastic PET growler bottles. This allows the PET Growler to be charged with C02 from any female ball lock gas fitting (like our item D32 or D03 Gas Connector), carbonating the cold beverage in the bottle including cold water. Cap threading is industry standard 38-400 growler threading.

This is ideal for adding a bit of charge to a PET growler after you fill it, as no matter how carefully you fill a PET growler from a draft system, some C02 carbonation is lost. Great for serving draft beer away from the keg. For use with plastic bottles only. 


Always wear eye protection. For use with plastic bottles only. Never exceed 20psi carbonation pressure.


Average Rating:
(based on 1 review)

Showing 1 Review:

Review and Rate this Item
by Josh
on 10/3/2014
from New Jersey
Works perfectly on my growler and Tap A Draft
Makes it easy for me to charge my growler so it does not go flat. Also fits my Tap A Draft. 
Review and Rate this Item
3/13/2019 12:50:55 PM
will this fit on a 1-gallon plastic juice bottle like this?:
Not recommended, as the juice bottle is not designed to hold any carbonation.
9/9/2018 1:10:45 AM
Lost the silicon gasket for this cap. Do you have a replacement I can buy? Thanks......
Sorry, we do not have these
8/15/2018 4:41:20 PM
Will this fill a stainless growler (prokeg)? If not, do you sell an adapter that I can carbonate stainless growlers tonabout 10-15 psi?
This will not fit since it is threaded, we do not have anything that fits this style of opening.
4/10/2018 6:00:46 PM
I'm carbonating in a large bottle at 40psi and then transferring to smaller bottles so slight leaking is acceptable (and I think my 28mm carbonation cap leaks slightly). I'm not storing with the cap. Sounds like this should work for my needs then?
This item is rated at 20 PSI or less, so it would not work in a 40 PSI application.
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