16 mm Barb-to-Lock-Ring Drip Tubing Coupler

A 16 mm barb-to-lock-ring drip tubing coupler joins two different connection styles in a straight line: a barbed tubing end and a lock-ring end. It is a transition fitting for an irrigation line, helping you connect compatible sections without treating the two ends as interchangeable.

Two connection styles, one straight fitting

The blue retaining ring identifies the lock-ring side. The opposite end has a stepped barb for the mating tubing. Choose this fitting when your line needs that combination; the retaining ring is different from a threaded lock nut.

Check each end before ordering

• Listed size: 16 mm.
• Connection layout: barb to lock ring.
• Fit checks: tubing inside diameter, line type and wall thickness at each end.

A nominal 16 mm label alone does not establish a fit across every irrigation tube or tape. Compare the mating line with the correct connection end, and confirm its dimensions before making an order for a complete installation.

Prepare and inspect the joint

Turn off the water supply before working on the line. Cut damaged tubing back to a clean, sound end and remove dirt from the connection area. Seat the compatible line fully on each end and secure the lock-ring connection in its intended position. Avoid forcing a mismatched tube onto the fitting.

Restore water gradually and inspect both ends for movement or seepage. Support the connected line so pulling on a long lateral does not strain the joint. Recheck the connection during the first watering run.

Plan the rest of the line

Use the fitting as part of a matched line assembly. Compare other connection styles in drip fittings when your installation calls for a coupler, end closure or branch connection.