Connection type
Barbed insert drip fittings: 1/2 in, 16 and 17 mm
Barbed insert fittings go inside the tubing. DIG labels its 1/2 in barbs 16 and 17 mm; Rain Bird's XF insert fittings are 17 mm, 0-50 psi, for XFD.
Also listed as insert fittings, 17 mm barb, XF insert fittings
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Short answer
A barbed insert fitting goes inside the tubing, so the inside diameter, or the metric family the maker names, decides fit. DIG sells a range of 1/2 in barbed fittings it labels 16 and 17 mm, with no barb diameter stated. Rain Bird lists its XF insert fittings as 17 mm barb-style, rated 0-50 psi, and names them for XFD dripline. See compression vs barbed vs locking.
Key facts
- How it grips
- A ridged barb pushed inside the tubing: Rain Bird calls its XF insert fittings barb-style[1][2]
- Dimension that decides fit
- The tubing's inside diameter, or the metric family the maker names (DIG: 16 and 17 mm; Rain Bird: 17 mm)[2][1]
- Ranges makers state
- DIG: 1/2 in barbed fittings labeled 16 and 17 mm. Rain Bird: XF insert fittings, 17 mm. A distributor lists Irritec's 600 Series hose coupling for .590-.630 in ID[2][1][3]The Irritec figure is from a distributor's listing (Cal-West), in inch values only.
- Maker pressure ratings
- Rain Bird XF insert fittings: 0-50 psi[1]
- Reuse and removal
- Not confirmedNo source in our register states whether barbed insert fittings can be removed and reused.
- Meets directly
- Rain Bird names XF insert fittings (XFF-COUP, XFF-ELBOW, XFF-TEE, XFF-MA-050) for XFD dripline, 0.536 in ID[4][1]
- Needs an adapter to meet
- Pipe thread: Rain Bird's XF elbow and tee adapters have a 1/2 in FPT inlet, for XF Series dripline[5]
- Common mistakes makers name
- Choosing by the 1/2 in label: DIG's '16 and 17 mm' range states no barb diameter and no list of driplines each fits[2]
- Not confirmed
- Not confirmedNo barb diameter from DIG. No source confirms that Rain Bird XF fittings and other makers' 17 mm fittings interchange. Irritec's own documents were not read.
Watch out for
- Rain Bird rates XF insert fittings 0-50 psi, below XFD dripline's 60 psi top.
- DIG's 16 and 17 mm label is a family name; DIG gives no barb diameter or dripline list.
- Netafim's Techline CV page names no approved fittings, so a 17 mm label alone does not confirm fit on it.
- Rain Bird's Easy-Fit adapters look similar but are not barbed fittings.
What fits
Product details below are the seller's own description unless a source is shown. Pick the variant named for each item.
Dripline for XF insert fittings
Rain Bird XFD‑09‑12‑100 on-surface dripline (0.9 GPH, 12 in spacing, 100 ft)Choose the XFD-09-12-100 (0.9 GPH, 12 in spacing, 100 ft).
Rain Bird names XF 17 mm insert fittings (or Easy-Fit) for XFD; the fittings themselves are not in our catalog yet.
Questions
What does 17 mm mean on a barbed fitting?
It is the maker's family name for 1/2 in class insert fittings. Rain Bird calls its XF insert fittings 17 mm barb-style; DIG labels its 1/2 in barbed range 16 and 17 mm without a barb diameter.[1][2]
Which barbed fittings does Rain Bird name for XFD?
Rain Bird names its XF Dripline insert fittings, rated 0-50 psi, or Easy-Fit compression fittings.[4][1]
Is Irritec's 600 Series coupling a Perma-Loc part?
The distributor listing we read does not call it Perma-Loc. It lists .590-.630 in ID in inch values. See joining metric tubing.[3]