What Adapter For

How to connect two different brands of drip tubing

Read the size printed on each tube first. If both say the same outside diameter, any coupling made for that size joins them. If they differ (say .700 and .710), use a universal nut-lock coupling. It fits all three common half-inch sizes.

What fits

Universal 1/2" drip coupling (fits .620" to .710")

or a compression coupling for that size, if both tubes match

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Universal 1/2" drip couplings

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  • Same size on both tubes (read the print or measure): any compression coupling for that OD works.
  • Different sizes, say .700" and .710": use a universal nut-lock or spin-lock coupling, which fits all three common half-inch sizes.

Brands sell different real sizes under the same “1/2 inch” label. A compression fitting is made for one outside diameter, so you need to know that diameter to pick the fitting.

More: Drip tubing sizes

Keep going

Drip tubing sizesGarden hose to drip irrigationIdentify itGarden hose to 1/2" pipeGarden hose to 3/4" pipeConnect two garden hosesToilet supply line size

For a different part on either end, open the adapter finder with this pair picked.

Where we get our information from

The sizes on this page come from published standards and the makers’ own documents. Checked against published data from DIG Corp..

See all 1 source
  • DIG Corp., “Tubing & Fittings for Drip Irrigation”

General guidance from manufacturer and standards data. Parts vary by brand, so check the size printed on the package against what you measured. For gas lines or anything inside a wall, use a licensed plumber.