How to Connect a SodaStream Cylinder to a Regulator Using an Adapter (for Beer Tapping)

What You Need

• A SodaStream CO₂ cylinder

• A SodaStream-to-CGA-320 adapter (or whatever format your regulator uses)

• A CO₂ regulator suitable for beverage service

• Beer lines, keg, and tap system already assembled

1. Make Sure Everything Is Off

Before connecting anything:

• Close the regulator shutoff valve (if it has one).

• Turn the regulator adjustment knob fully counter-clockwise to reduce spring tension (so it won’t surge with pressure).

• Ensure the SodaStream cylinder valve is completely closed.

This prevents a sudden CO₂ blast when things are connected.

2. Attach the Adapter to the Regulator

• Screw the adapter into the input side of the regulator (the same place a normal CO₂ tank would connect).

• Hand-tighten first.
  

• Then give it a firm additional twist with a wrench if the adapter is designed for that.
  (Don’t over-torque—just lightly.)

3. Insert the SodaStream Cylinder Into the Adapter

• Hold the SodaStream cylinder upright.

• Begin threading it by hand into the adapter.

• Tighten slowly and smoothly.

• 

You’ll feel the point where the cylinder starts engaging the internal pin—this is normal. Continue tightening until it is secure.

4. Slowly Open the Cylinder Valve (If Your Adapter Has One)

Some adapters have a small knob or inline valve. If yours does:

• Crack it open slowly so gas enters the regulator gently.

• Listen for leaks.

  • If you hear hissing, close it again and re-seat the connections.

If your adapter does not have its own valve, the SodaStream valve will open automatically once tightened. In that case, just continue to the next step.

5. Set the Regulator Output for Beer Service

Without giving exact PSI values (which depend on temperature, keg, and system):

• Turn the regulator adjustment knob clockwise slowly to bring up pressure.

• Watch the low-pressure gauge rise.

• Stop when you reach the typical range used for beer service.

6. Check for Leaks

Spray soapy water—or a leak-detecting spray—on all joints:

• Cylinder → adapter

• Adapter → regulator

• Regulator → gas line

If bubbles form, you have a leak.
Tighten that connection and retest.

7. Open the Regulator Shutoff Valve and Start Serving

Once everything is leak-free:

• Open the shutoff valve (if present).

• Your keg should now be receiving CO₂.

• Beer can be poured normally through the tap.

Important Safety Notes

• SodaStream cylinders hold high pressure—always open valves slowly.

• Do not lay the cylinder sideways.

• If you’re unsure, seek help from someone experienced with draft systems.

• Never modify the adapter or regulator beyond normal use.