Pepsi Bag-In-Box BIB connector

The Pepsi Bag-In-Box syrup is intended for use in drinks machines, but is the same syrup used by Sodastream to make fizzy drinks at home. There's no easy way to dispense the contents without connecting to the outlet and I've been unable to find a part that fits on ebay.

My design can either screw directly onto a cheap taps or to attach a 10mm pipe over a barbed connector. I've included both designs but the pipe would need hoseclips to prevent leaks.

The tap I used was described on amazon as “4 Pcs Universal Beverage Dispenser Spigot Tap, Reusable Spigot Spout Replacement, Plastic Push Type Dispenser Faucets for Hot Cold Water Fermenter Beer Wine Juice Bottle Bucket, White”, 4 of them for £7.99. The outside thread on these was 16.5mm so you might want to fettle my design if you can't find the same.

The inside part of the connector pushes-open the valve on the pepsi bag and requires a rubber seal. I took one from a coca-cola connector an ebay seller sent me in error and is about 12mm diameter. The cap holds this in place with a twin-screw thread.

For the threaded version, you drop the cap over the connector, then screw onto the tap. It does need a rubber washer where this meets the end as liquid can seep up the thread of my part. My taps came with 2 of these already so it needs one of them. My taps have a 27mm threaded stem so my part is a little longer than this. 

I printed this fast/low quality first but it leaked a little. It may have been an error on my seals. My final model I printed at Cura's Super Quality with 0.12mm layer height, 60% infill, Wall Line Count at 4. This seems to be water tight even in PLA.

5th June 2023 Additional Information:
After checking the syrup, I've worked out that Bag-in-Box syrup is weaker than Sodastream Syrup. When you fizz a sodastream bottle at the correct marked line, fill the remainder of the bottle with syrup to the neck to get the correct 5:1 water/syrup ratio.

I've uploaded a video showing the adapter in use and how to get that syrup correctly measured here: 

These were the taps I used: https://www.amazon.co.uk/dp/B0BY4SYCDD and I've also added a screen shot with the dimensions of these, in case that product link is no longer available or you want to source from elsewhere.