Reducing Coupling Straight Hose Pipe Plastic Adapter Fittings Connector Joint

Measure the inner diameter (ID) of each hose you need to connect. The barbed end of the fitting should match the inner diameter of the hose it inserts into — the barb outer diameter should equal or be very slightly larger than the hose ID for a snug grip. Check the variant size label (e.g., "19mm to 9.5mm") which refers to the outer diameter of each barbed end.

These barbed fittings are designed for use with flexible hose and tubing (such as flexible PVC or rubber garden hose). They are not intended for rigid pipe connections. The barb relies on the hose material flexing over the barb to create a seal.

For low-pressure applications such as drip irrigation or gravity-fed water lines, the barbed connection alone is typically sufficient. For higher-pressure systems or applications where vibration is present, adding a hose clamp over the hose at each barbed end is recommended to prevent pull-out.

The plastic construction does not corrode and is suitable for outdoor use in garden and irrigation environments. Prolonged direct UV exposure over many years may cause gradual material degradation; for long-term outdoor installations, shading the fitting or replacing periodically is advisable.

These fittings are intended for general garden, irrigation, and utility water applications. If you require fittings for potable (drinking) water or food-grade use, please contact us to confirm material compliance before ordering.

These fittings are suited for low-to-medium pressure garden and utility water lines. Exact pressure ratings depend on hose type, clamp use, and temperature. For high-pressure plumbing systems, please contact us to confirm suitability before use.

Yes. Each size combination is available in a quantity of 1, so you can order a single piece to verify the fit with your hose before committing to a pack of 4 or 10.