Hose clamps for homebrew beer lines

Typical homebrew beer liquid hose has an outer diameter (OD) of 7/16″ or 0.4375″ or 11mm

Typical homebrew beer gas hose has an outer diameter (OD) of 9/16″ or 0.5625″ or 14mm

A worm gear drive hose clamp size 04 has a diameter

  • when fully open of 5/8″ or 0.62″ or 16mm
  • when close of 1/4″ or 0.25″ or 6mm

Ideally the host clamp is larger than the OD of the hose you’re clamping but not significantly larger so that the shape of clamp is circular and not pinched next to the gear when it’s cinched down.

This aliexpress seller sells hose clamps for cheap. The two sizes that may be ideal here are

  • Type 1: 8mm-12mm
  • Type 2: 10mm-16mm

You could also buy them in bulk from this seller though they look more expensive

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