Cross (13mm / 19mm / 25mm)

What is a Cross fitting used for in irrigation?

A Cross fitting creates a 4-way “+” junction, letting you split a mainline into two branches while continuing the main. It’s perfect for feeding multiple rows or pots from one spot and building symmetrical irrigation grids in hydro, garden, or pond systems.

How do I choose the right Cross fitting size?

Match the Cross to your tubing: 13mm suits small runs, 19mm works for most midsize systems, and 25mm handles higher flow or longer layouts. Don’t force mismatched sizes—use reducers if needed for transitions.

Will a Cross fitting reduce flow or cause uneven watering?

Every junction adds slight resistance. Uneven watering can happen if branch lengths differ or pressure is low. Use inline valves to balance flow and consider upsizing the mainline if feeding multiple branches.

Is the Cross fitting barbed and how do I install it?

Yes—it’s a barbed push-in fitting. Cut hose ends square, warm them slightly if stiff, and push each hose fully onto the barbs with a twist. Cover the full barb depth for a secure seal.

Do I need hose clamps with the Cross fitting?

Yes, especially on 19mm and 25mm lines or in warm environments where tubing softens. Worm-drive or ratchet clamps are best. Zip ties can work temporarily but aren't as reliable. No need for thread tape or sealant.

Can I use the Cross fitting with hydroponic nutrient or compost teas?

Yes—Cross fittings are common in hydro systems. Just flush lines regularly if using organics, as biofilm or sediment can clog emitters downstream. A pump filter also helps keep things running clean.

What tubing works with the Cross fitting?

These fittings are designed for standard LDPE irrigation pipe and compatible flexible tubing of the same size. Avoid clear tubing in lit areas—it promotes algae growth. Use opaque lines for hydro feeds.

Can I use the Cross fitting in outdoor or buried irrigation?

Yes—it’s widely used outdoors and can be buried if protected from rocks and shifting soil. For long-term buried setups, use purpose-built poly irrigation gear. Shade exposed lines to extend lifespan.

Is the Cross fitting safe for mains pressure water?

It’s meant for low-to-medium pressure irrigation. If connecting to mains, use pressure regulation and pressure-rated fittings to avoid blow-offs or damage.

Can I reuse the Cross fitting?

Yes. To remove hoses, warm the ends and twist gently. If they’re stuck, slice the hose lengthwise and peel it off. Always rinse fittings before reuse and pressure test with clean water if reinstalled.

Why is my Cross fitting leaking or the hose popping off?

Top causes: hose not fully seated, angled cuts, wrong size, no clamp, or hose softened by heat. Reseat the hose fully, cut it clean, and clamp securely to fix most issues.

How do I pressure test a Cross fitting after install?

Run clean water through the system, dry the exterior of all four joints, and watch for damp rings or slow weeping over 10–15 minutes. Tiny leaks are easiest to catch early this way.

What’s the most common mistake with Cross fittings?

Branching too many lines without upsizing the main or balancing flow—leading to uneven watering. Support hoses near the Cross and use inline valves to fine-tune output across all branches.

What’s the easiest way to use a Cross with no issues?

Use it on a correctly sized mainline, clamp all hose ends, and keep branch lengths similar. Add inline valves for control and route hoses with gentle curves to avoid stress at the joints.