Keg Tapping Guide

Step-by-step instructions for properly tapping Petainer kegs with different fitting types to ensure optimal beverage quality and dispensing performance.

Keg Tapping Overview thumbnail

Before You Begin

Before beginning, ensure that the dispense head, keg fitting and pipes have been cleaned and sterilised once snap cap is removed.
A

Flat Type Fitting

Common in German keg valves

G

Triangle Type Fitting

Used for European keg valves

S/D

Well Type Fitting

Common in UK and US keg valves

Tapping Instructions

A

Flat Type Fitting: A

1
Break and remove the snap cap
2
Slide the dispense head completely onto the fitting and push down the handle.
3
Push down the dispense head handle, ready to dispense
Flat Type Fitting Diagram

Important

Take care to fully engage the dispense head by sliding it onto the fitting until it is fully covered. This will avoid fitting damage while pressing the handle down.
G

Triangle Type Fitting: G

1
Break and remove the snap cap
2
Push the dispense head onto the top of the keg
3
Hold the fitting with one hand and turn the dispense head clockwise with the other hand until it stops
4
Push down the dispense head handle, ready to dispense
Triangle Type Fitting Diagram
S/D

Well Type Fitting: S,D

1
Break and remove the snap cap
2
Push the dispense head into the fitting on the top of the keg. Ensure the correct dispense head is selected - refer to diagram below
3
Turn the dispense head clockwise until it stops. Too much force can damage the fitting
4
Push down the dispense head handle, ready to dispense
Well Type Fitting Diagram

Caution

Using too much force when turning the dispense head can damage the fitting. Turn only until you feel resistance.

Troubleshooting

Foam Issues

If you're experiencing excessive foam when dispensing:

  • • Check that the keg has been properly chilled (recommended 3-5°C / 38-41°F)
  • • Ensure the CO₂ pressure is set correctly (typically 1.0-1.5 bar / 14-22 psi)
  • • Verify that all connections are tight and there are no leaks in the system
  • • Make sure the beer line is properly cooled and not too long

No Flow or Slow Flow

If beer is not flowing or flowing too slowly:

  • • Check that the CO₂ tank is not empty and the valve is open
  • • Ensure the coupler is properly engaged with the keg valve
  • • Inspect the beer line for kinks or blockages
  • • Verify that the tap faucet is fully open

Leaking Connections

If you notice leaks around the coupler or fittings:

  • • Check that the coupler is properly aligned and fully engaged
  • • Inspect gaskets and O-rings for damage or wear
  • • Ensure connections are not cross-threaded or over-tightened
  • • Verify that the correct coupler type is being used for the keg fitting

Best Practices

Temperature Control

  • 1

    Maintain keg temperature between 3-5°C (38-41°F) for optimal dispensing. Allow at least 24 hours for a keg to reach proper temperature.

  • 2

    Keep beer lines cold to prevent foaming. Insulate exposed lines or use a glycol cooling system for longer runs.

  • 3

    Avoid temperature fluctuations which can cause CO₂ to come out of solution and create excess foam.

Pressure Settings

  • 1

    Set CO₂ pressure according to beer style, typically between 1.0-1.5 bar (14-22 psi) for most lagers and ales.

  • 2

    Adjust pressure based on beer line length and elevation differences between keg and tap. Longer lines require higher pressure.

  • 3

    Use a secondary regulator for precise control when serving multiple kegs with different pressure requirements.

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