Netafim Techline EZ 12mm Insert Coupling

A quick guide to splicing lines or making a leak-proof repair.

Step 1: Cut the Tubing
Using a pair of tubing cutters, cleanly cut out any damaged sections of tubing, ensuring you leave straight, 90-degree cuts on both open ends of the 12mm Netafim Techline EZ tubing.

Step 2: Warm the Tubing (Optional)
If your tubing feels cold or stiff, briefly dip the ends in hot water or let them sit in direct sunlight. Softening the plastic makes inserting the coupling much easier.

Step 3: Insert the First Side
Firmly grasp the tubing and push the Netafim Techline EZ 12mm Insert Coupling straight into one open end. Rock the fitting slightly side to side until the tubing slides completely over the barb to the center stop.

Step 4: Bridge the Gap
Take the other open end of the tubing and push it firmly over the remaining exposed barb on the coupling to complete the splice and seal the line.

During spring startup, how do I use the Netafim Techline EZ 12mm Insert Coupling to fix a broken line?
Simply cut out the damaged section from winter freezing or shovels, then firmly push the Netafim Techline EZ 12mm Insert Coupling into both open ends of the tubing to bridge the gap and restore a watertight seal.

It is highly recommended to keep a few of these couplings on hand before spring startup so you can immediately fix any unexpected leaks found when you first pressurize your system.

Will the Netafim Techline EZ 12mm Insert Coupling work with standard 1/2-inch tubing?
No, this coupling is designed exclusively for 12mm tubing with a 0.426-inch inside diameter. Standard 1/2-inch tubing is too large and will leak immediately if attached to this fitting.

Standard 1/2-inch poly tubing typically has an inside diameter of 0.600". If you try to use this 12mm fitting with that larger tubing, the water pressure will blow the connection apart.

Does the Netafim Techline EZ 12mm Insert Coupling require hose clamps?
No, hose clamps are not required. The sharp barbs on the Netafim Techline EZ 12mm Insert Coupling create a secure friction fit inside the 12mm tubing that holds water effectively up to 50 PSI.

As long as you are using the correct 12mm tubing and your water source is pressure-regulated below 50 PSI, the friction from the barbs provides a permanent seal.

How do I remove the Netafim Techline EZ 12mm Insert Coupling if I make a mistake?
Do not try to pull the Netafim Techline EZ 12mm Insert Coupling out, as you may damage the barbs. Instead, slice the tubing carefully along the barb or cut the tubing off entirely.

Because these fittings are designed to grip tightly, pulling on them can warp the plastic barbs, leading to leaks if you try to reuse the coupling later.