Tubing size
3/4 in drip tubing at .940 in OD: DIG's size and what is known
DIG lists 3/4 in poly tubing at .820 x .940 in with a .060 in wall, up to 60 psi. What makers state about it, and which fittings are not confirmed.
Also listed as 3/4 in poly, .820 x .940 tubing
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Short answer
DIG lists its 3/4 in poly tubing (14-000 and 14-002) at .820 in ID by .940 in OD with a .060 in wall, rated up to 60 psi. DIG's overview also mentions a .920 in OD, but its ordering table offers only .940 in. None of the 1/2 in fitting ranges in our sources reaches .940 in, and no 3/4 in fitting is confirmed here. Measure first: how to measure drip tubing.
What fits
- 3/4 in tubingDrip Depot 3/4 in black polyethylene tubing (0.820 x 0.940 in, 100 ft)Check price on Amazon
Key facts
- Names it is sold under
- 3/4 in poly drip tubing (DIG 14-000 and 14-002)[1]
- Outside diameter
- 0.940 in (23.8 mm), DIG[1]
- Inside diameter
- 0.820 in (20.8 mm), with a 0.060 in wall, DIG[1]DIG states the wall consistently with its ID and OD for this size.
- Tubing makers list at this size
- DIG 14-000 and 14-002, in 250 ft and 500 ft coils[1][2]DIG says it adds at least 2% carbon black to its polyethylene tubing for UV protection.
- Maker pressure rating
- DIG: up to 60 psi[1]
- Compression fittings for this OD
- Not confirmedNo source in our register lists a compression fitting for .940 in OD.
- Locking-nut and universal fittings
- Not confirmedThe nut-lock ranges in our sources stop at .710 in OD (DIG NUTLOC, Orbit 67466).
- Barbed fittings
- Rain Bird SPB-025 self-piercing barb joins 1/4 in tubing to 1/2 or 3/4 in distribution tubing, inserted with the XM-Tool (0-50 psi)[3]Rain Bird names 3/4 in tubing by nominal size, not by OD.
- Reducers and adapters
- Not confirmedNo 3/4 in to 1/2 in reducer or thread adapter for .940 in OD is in our sources.
- End closures, plugs and stakes
- Not confirmedNo end closure listed for .940 in OD is in our sources.
- How to identify it
- Read the print on the tubing first. Then cut a fresh, square end and measure the OD across the outside with calipers; a reading near .940 in puts it in this size. Drip Depot says to check a tube's ID and OD before buying fittings. Steps: [how to measure drip tubing](/guides/how-to-measure-drip-tubing); lookup: [tubing size finder](/tools/drip-tubing-size-finder)[4]
- Maker-page conflicts
- DIG's overview says its 3/4 in tubing comes in .920 and .940 in OD, but its ordering table lists only .940 in OD tubing[1]Do not shop for a .920 in DIG SKU from this page.
- Not confirmed
- Not confirmedNo fitting, reducer or end closure in our sources is listed for .940 in OD. No source gives a measuring tolerance.
Watch out for
- DIG's overview mentions a .920 in OD, but only .940 in OD tubing is in its ordering table.
- The 1/2 in fitting ranges in our sources stop at .710 in OD (DIG NUTLOC, Orbit 67466), well below .940 in.
- DIG's .060 in wall here matches its own ID and OD, unlike the wall figures on its .700 and .710 pages.
What fits
Product details below are the seller's own description unless a source is shown. Pick the variant named for each item.
3/4 in tubing
Drip Depot 3/4 in black polyethylene tubing (0.820 x 0.940 in, 100 ft)Choose the 3/4 in (0.820 x 0.940 in) 100 ft coil.
Drip Depot lists 0.820 in ID x 0.940 in OD, the same pair DIG lists for its 3/4 in tubing.
Questions
What size is 3/4 in drip tubing?
DIG lists its 3/4 in poly tubing at .820 in ID by .940 in OD with a .060 in wall, rated up to 60 psi.[1]
Can I tap 1/4 in tubing into 3/4 in line?
Rain Bird says its SPB-025 self-piercing barb joins 1/4 in tubing to 1/2 or 3/4 in distribution tubing, inserted with the XM-Tool. See connecting 1/4 in tubing.[3]
Is .920 in a current DIG size?
DIG's overview mentions .920 in, but its ordering table lists only .940 in OD tubing (14-000 and 14-002).[1]