3/5mm Double Barbed Connector

Engineered for high-integrity micro-irrigation systems, the 3/5mm Double Barbed Connector provides a secure, mission-critical join for 3mm ID x 5mm OD (1/8”) micro-tubing. It is the essential component for reliably connecting drippers, micro-sprinklers, foggers, and emitter stakes to the lateral supply line in professional agricultural and horticultural environments.

Unlike standard single-barb fittings that risk disconnection under pressure surges or high field temperatures, our connector features an aggressive, deep-seated double-barb design. Manufactured from 100% virgin, UV-stabilized Engineering-Grade POM (Polyoxymethylene), it ensures extreme durability against sun exposure, chemical fertigation, and physical stress. This makes it the definitive choice for professional greenhouse, nursery, and vineyard applications where connection failure is not an option.

As a primary irrigation fittings manufacturer, we deliver consistent quality and high-volume supply for global projects and distributors.

• Superior Connection Integrity: Double-barb design provides maximum tensile strength, preventing costly tube blowouts and leaks.
• Engineering-Grade Material: Constructed from 100% virgin POM for superior rigidity, impact strength, and chemical resistance over standard PP.
• High-Pressure Performance: Rated for stable operation up to 3.0 Bar (43.5 PSI), suitable for demanding professional systems.
• UV & Chemical Resistant: Stabilized against long-term UV degradation and damage from agricultural acids, fertilizers, and cleaning agents.
• Factory Direct Bulk Supply: We guarantee consistent quality, precise tolerances, and high-volume supply for your projects.

Core Advantage: Why a Double Barb Design Ensures System Reliability

In micro-irrigation, the most common point of failure is the connection between the 3/5mm “spaghetti tube” and the fitting. As tubing softens under intense sunlight and heat, pressure spikes from system start-up can easily force the tube off a standard single barb.

Our double-barbed design mechanically solves this problem. A single barb primarily acts as a plug, relying on simple friction. A double barb creates two distinct pressure seals and two mechanical locks within the tube wall.

Unmatched Pull-Out Resistance

The first barb initiates the seal, while the second, sharp-angled barb bites into the tubing wall, creating an aggressive mechanical lock. This design multiplies the tensile strength (pull-out resistance) required to disconnect the fitting. This ensures the connection remains intact season after season, even in high-temperature greenhouse environments or when tubing is subject to physical pulling by field workers.

Leak-Proof Seal Without Clamps

The precision-molded profile of the barbs creates a 360-degree watertight seal through a simple, firm push-fit. This design completely eliminates the need for costly, time-consuming, and unreliable clamps or clips, dramatically reducing installation labor time and removing a potential failure point from your system.

Technical Specifications

Designed for B2B procurement, these specifications confirm compatibility and performance for engineering and purchasing teams.

Applications & Installation Guide

These connectors are the professional standard for any application requiring the connection of 3/5mm micro-tubing.

Ideal Applications

• Greenhouse & Nurseries: Connecting dripper stakes (arrow drippers) or micro-sprinklers for pot-in-pot or bench systems.
• Hydroponics & Soilless Culture: Assembling feed lines and distribution manifolds for high-value substrate-grown crops.
• Vineyards & Orchards: Running lines from the sub-main to individual pressure-compensating (PC) drippers at the base of trees or vines.
• Landscape & Planter Boxes: Creating discreet, reliable connections for spot watering in commercial and residential irrigation.

Installation Best Practices

1. Ensure a clean, perpendicular cut on the 3/5mm micro-tube using a proper tube cutter. Avoid jagged edges from scissors.
2. Firmly push the tubing over the double barbs. A twisting motion can help.
3. Ensure the tubing is pushed fully past both barbs to seat completely against the fitting’s central flange.
4. Pro-Tip: If installation is difficult in cold weather, briefly dip the tube end in warm water to soften it. Do not use heat guns or lighters, as this can damage the tube integrity.
5. Verify the connection with a firm tug. No clamps are required.

Material Durability: Engineering-Grade POM vs. Standard PP Fittings

While many low-cost fittings use Polypropylene (PP), our connectors are exclusively manufactured from Engineering-Grade POM (Polyoxymethylene). For a B2B buyer, this material distinction is critical for long-term operational costs.

• Superior Creep Resistance: Under the constant pressure of an irrigation system, PP can slowly deform or “creep,” leading to leaks. POM maintains its shape and rigidity, ensuring a tight seal for life.
• Higher Hardness & Rigidity: POM barbs are sharper and do not flex during installation, providing a more secure initial bite into the tubing.
• Chemical & Thermal Stability: POM offers superior resistance to the complex fertilizers and acids used in fertigation and is more stable across a wider temperature range than PP.

Bulk Purchasing & Logistics (For Distributors & Project Suppliers)

We are a global supplier and exporter of micro-irrigation fittings, specializing in bulk operations for distributors and large-scale project contractors. We provide reliable lead times and professional logistics support.

Standard Packaging Details

• Inner Bag: 1,000 Pieces / PE Bag
• Master Carton: 20,000 Pieces / High-Strength 5-Ply Corrugated Carton
• Carton Dimensions: 45cm x 30cm x 30cm (Est.)
• Pallet: Standard export palletizing available (1.2m x 1.0m)

MOQ & Lead Time

• Minimum Order Quantity (MOQ): 50,000 Pieces
• Lead Time: 15-25 working days for standard orders up to 1,000,000 pieces.
• Sample Policy: We provide complimentary samples to qualified B2B clients for compatibility testing and quality verification.

Frequently Asked Questions (FAQ)

Q1: What is the real advantage of a “double barb” connector over a single barb?

A: The primary advantage is superior pull-out resistance. A single barb can pop off under pressure, especially when the tubing softens in the heat. The second barb acts as a mechanical lock, preventing disconnection and ensuring system integrity, which is critical in commercial operations.

Q2: What is the maximum operating pressure for this 3/5mm connector?

A: This fitting is rated for a maximum pressure of 3.0 Bar (43.5 PSI). We recommend an operating pressure range of 1.0 to 2.5 Bar for optimal system lifespan.

Q3: Is this 1/8″ fitting UV resistant for outdoor greenhouse use?

A: Yes. It is manufactured from 100% virgin POM material that includes high-grade UV stabilizers. This prevents the plastic from becoming brittle or cracking under prolonged sun exposure, ensuring a long field life.

Q4: What is the difference between POM and PP fittings?

A: POM (Polyoxymethylene) is a high-performance engineering plastic that is stronger, more rigid, and has better resistance to chemical creep and temperature fluctuations than standard PP (Polypropylene). For a long-term professional installation, POM is the superior material.

Q5: What is your MOQ and how can I get samples?

A: Our standard MOQ for bulk production is 50,000 units. We are happy to provide samples to irrigation distributors, project contractors, and engineers for testing. Please use the “Request Sample” button below.

Get a Professional Quote for Your Project

Ready to secure your micro-irrigation system with engineering-grade fittings? Contact our team for bulk pricing, technical data sheets, or to request samples for your project.