Y-Piece 3-Way Plastic Hose Connector — Barbed Tube Fitting 3.9mm to 10mm

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Y-Piece 3-Way Plastic Hose Connector — Barbed Tube Fitting 3.9mm to 10mm

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Size: 3.9mm

Qty(pcs): 1 pcs

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$2.75 USD

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In stock (500 units), ready to be shipped

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Y-Piece 3-Way Hose Connector — Split or Merge Tubing Lines with Ease

When you need to branch a single hose line into two — or merge two lines into one — a reliable Y-piece 3-way hose connector makes all the difference. DIYers, hobbyists, and tradespeople working on aquarium setups, garden irrigation, automotive cooling systems, or pneumatic rigs often struggle to find fittings that grip firmly without cracking or leaking. These plastic barbed Y connectors are designed to solve exactly that problem.

Each connector is sold individually or in multipacks (1, 5, 10, 20, 25, or 30 pcs) so you can stock up for larger projects. Made from durable plastic (nylon/polypropylene construction), the barbed design creates a secure friction fit inside standard flexible tubing. Available in equal-bore sizes — 3.9mm (≈5/32"), 4mm (≈5/32"), 4.8mm (≈3/16"), 6mm (≈1/4"), 8mm (≈5/16"), and 10mm (≈3/8") — as well as reducing Y configurations such as 3.9-2.4-3.9mm, 6.4-3.9-6.4mm, 7.9-4.8-7.9mm, and 7.9-3.9-7.9mm for mixed-diameter line splits.

These fittings are widely used in aquarium and fish tank air line splitting, drip irrigation and garden hose branching, automotive coolant overflow and windshield washer line routing, and small-engine fuel line distribution. Whether you're building a custom hydroponics system or routing air lines through a workshop, the Y-piece connector keeps your tubing organized and leak-free.

🔗 Compatibility: Fits standard flexible tubing including PVC, silicone, rubber, and polyurethane hoses. Match the barb size to your hose's inner diameter (ID) for a secure fit. Reducing Y sizes allow connection of two different hose diameters.

⚠️ Size Note: For three-number variants (e.g., 6.4-3.9-6.4mm), the first and third numbers are the two main port diameters; the middle number is the branch port diameter. Please confirm your hose inner diameters before ordering.

✅ Key Features of These Y-Piece 3-Way Hose Connectors

🔀True 3-Way Split — Y-shaped design lets you branch one inlet into two outlets, ideal for aquarium air line splitting and garden drip irrigation branching.
🔒Barbed Grip Design — Angled barbs bite into flexible tubing to resist pull-out and maintain a leak-resistant seal without adhesives or thread tape.
📐Wide Size Range — Equal-bore sizes from 3.9mm to 10mm plus reducing Y configurations cover most standard hose inner diameters used in DIY and light industrial applications.
💧Multi-Fluid Compatible — Suitable for air, water, and light fuel lines; works with PVC, silicone, rubber, and polyurethane tubing for versatile use across automotive and garden systems.
🧱Durable Plastic Construction — Resistant to moisture and mild chemicals; maintains shape under typical low-to-medium pressure conditions found in irrigation and pneumatic setups.
📦Flexible Quantity Options — Available in 1, 5, 10, 20, 25, or 30 pcs so you can order exactly what you need — from a single repair to a full workshop stock of plastic hose barb fittings.

📐 Technical Specifications — Y-Piece 3-Way Hose Barb Connectors

Connector Type	Y-Piece 3-Way Barbed Hose Fitting
Material	Plastic (nylon / polypropylene — see variant options)
Port Configuration	Equal-bore Y (all 3 ports same size) or Reducing Y (mixed port sizes)
Available Bore Sizes (Equal)	3.9mm (≈5/32"), 4mm (≈5/32"), 4.8mm (≈3/16"), 6mm (≈1/4"), 8mm (≈5/16"), 10mm (≈3/8")
Available Bore Sizes (Reducing Y)	3.9-2.4-3.9mm, 6.4-3.9-6.4mm, 7.9-4.8-7.9mm, 7.9-3.9-7.9mm
Compatible Hose Types	PVC, silicone, rubber, polyurethane flexible tubing
Typical Pressure Rating	Generally up to 30–60 PSI (low-to-medium pressure; use clamps for higher pressure)
Color / Finish	See variant options
Pack Quantities	1 pcs / 5 pcs / 10 pcs / 20 pcs / 25 pcs / 30 pcs
Installation Method	Push-fit barbed (no tools required; hose clamp recommended for pressure use)
Country of Origin	Contact us to confirm

❓ Frequently Asked Questions

How do I choose the right size Y-piece hose connector?

Measure the inner diameter (ID) of your hose. The connector size listed (e.g., 6mm) refers to the barb outer diameter, which should match your hose ID for a snug fit. For example, a 6mm barb fits a hose with a 6mm inner diameter (approximately 1/4"). For reducing Y sizes like 6.4-3.9-6.4mm, the two outer ports are 6.4mm and the center branch is 3.9mm — confirm all three hose IDs before ordering.

What pressure can these plastic hose connectors handle?

Plastic barbed hose connectors are generally suitable for low-to-medium pressure applications, typically up to around 30–60 PSI depending on the hose material and whether clamps are used. For higher-pressure systems such as automotive coolant lines, we recommend securing the hose with small hose clamps to prevent blow-off.

Can these connectors be used outdoors or in wet environments?

Yes. Plastic barbed fittings are generally resistant to moisture and mild weather exposure, making them suitable for garden irrigation, outdoor water lines, and aquarium setups. Prolonged direct UV exposure may cause brittleness over time — for long-term outdoor installations, consider protecting the fittings with sheathing or using UV-stabilized tubing around the joint.

Are these Y connectors compatible with both air and water lines?

Yes. These plastic Y-piece fittings are compatible with air, water, and light fuel lines in most cases. They work with standard flexible tubing including silicone, PVC, and rubber hoses. Always verify that the hose inner diameter matches the barb size before installation to ensure a leak-resistant connection.

What is the difference between the straight sizes and the three-number Y sizes?

Straight sizes (e.g., 4mm, 6mm, 8mm) are equal-bore Y connectors where all three ports share the same diameter — ideal for splitting one line into two identical lines. Three-number sizes (e.g., 6.4-3.9-6.4mm) are reducing Y connectors: the two outer ports are one size and the branch port is a different (smaller) size, allowing you to split or merge hose lines of different diameters.

Do I need clamps to secure the hose onto the barbed fitting?

For low-pressure applications such as aquarium air lines or drip irrigation, the barbed design generally holds the hose securely without clamps. For higher-pressure or vibration-prone applications — such as automotive coolant or fuel lines — using small hose clamps is recommended to prevent leaks and ensure a long-lasting connection.

How many pieces should I order?

This product is available in quantities of 1, 5, 10, 20, 25, and 30 pieces. For a single repair or test fit, 1 pcs is sufficient. For irrigation systems, aquarium setups, or workshop projects with multiple branch points, ordering 10–30 pcs typically offers better value per unit and ensures you have spares on hand.

🛒 Select your size and quantity above, then add to cart — ships from our US warehouse.

Y-Piece 3-Way Plastic Hose Connector — Barbed Tube Fitting 3.9mm to 10mm

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Description

Y-Piece 3-Way Hose Connector — Split or Merge Tubing Lines with Ease

✅ Key Features of These Y-Piece 3-Way Hose Connectors

📐 Technical Specifications — Y-Piece 3-Way Hose Barb Connectors

❓ Frequently Asked Questions

Y-Piece 3-Way Plastic Hose Connector — Barbed Tube Fitting 3.9mm to 10mm

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