Hose barb fittings connect flexible hose or tubing to threaded pipe or other components using barbed ridges that grip the hose ID when a clamp is applied. The barbs bite into the hose wall as the clamp compresses, creating a secure, pressure-resistant seal without adhesives or special tools. Hose barb fittings are the dominant connection method for flexible tubing in chemical dosing, water treatment, irrigation, laboratory equipment, and cooling water systems.
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3/16 in. x 1/4 in. Hose Barb x Male NPT White Nylon Elbow -
1/4 in. Brass Female Ball Seat Adapter -
1/4 in. Hose Barb x 1/4 in. Female NPT Nylon Elbow -
1/4 in. Hose Barb x 1/8 in. Female NPT Nylon Elbow -
1/4 in. Hose Barb x 1/8 in. Female NPT Polypropylene Elbow -
1/4 in. x 1/2 in. Black Poly Reducing Hose Barb Branch Tee -
1/4 in. x 1/4 in. Brass Grip-On Hose Barb Elbow, Hose to Male NPT -
1/4 in. x 1/4 in. Brass Grip-On Hose Barb to 45/37 Female Swivel -
1/4 in. x 1/4 in. Brass Push-On Hose Barb x Female NPT Adapter -
1/4 in. x 1/8 in. Brass Push-On Hose Barb x Male NPT Adapter -
1/4 in. x 3/16 in. Brass Push-On Hose Barb x OD Tube Adapter -
1/4 in. x 3/8 in. Brass Hose Barb x Female Gasket Swivel -
1/4 in. x 3/8 in. Brass Push-On Hose Barb x Female NPT Adapter -
1/4 in. x 3/8 in. Brass Push-On Hose Barb x Male NPT Adapter -
5/16 in. x 1/2 in. Brass Hose Barb x Male NPT Adapter -
5/16 in. x 1/4 in. Hose Barb x Male NPT White Nylon Adapter -
5/16 in. x 1/8 in. Hose Barb x Male NPT Black Poly Adapter -
5/16 in. x 5/16 in. Brass Push-On Hose Barb x Female 45/37 Flare Swivel -
3/8 in. Brass Hose Barb x 1/2 in. BSPT Male Adapter -
3/8 in. Hose Barb x 3/8 in. Male NPT Polypropylene Adapter -
3/8 in. White Nylon Hose Barb Tee -
3/8 in. x 1/4 in. Brass Hose Barb x Female Gasket Swivel -
3/8 in. x 1/4 in. Brass Hose Barb x Male NPT Branch Tee -
3/8 in. x 1/4 in. Brass Fuel Hose 90-Degree Elbow, Single Barb x Male NPT
Apex Flow Solutions stocks brass hose barb fittings — adapters, elbows, and tees — across a full range of barb sizes and NPT thread sizes. All fittings are forged or machined brass for pressure integrity and long service life in both hose clamp and barb-retention applications.
Selecting the Right Barb Size
Hose barb fittings are sized by the barb OD, which should match (or slightly exceed) the hose ID for a proper grip. A barb that is too small will leak; a barb that is too large may split the hose. See our Hose Barb Sizing Chart for a complete ID-to-barb-size reference table. Always pair with a properly sized hose clamp — worm gear or ear clamps depending on pressure and vibration requirements.
Common Applications
Chemical metering and dosing tubing connections, cooling water circuits, pool and spa equipment, laboratory fluid distribution, garden and drip irrigation, radiator hose connections, and any system using flexible PVC, polyethylene, silicone, or rubber hose.
Related Technical Resources
- Hose Barb Sizing Chart: ID to Fitting Match
- Brass Fitting Types and Sizes Guide
- NPT Thread Tightening Reference
Frequently Asked Questions
Do hose barb fittings need clamps, or will the barbs hold on their own?
Clamps are required for any pressurized application. While the barbs grip the hose wall and can retain hose under very low pressure or suction, they will not hold reliably against system working pressure without a clamp securing the hose over the barb. Always use a worm-drive clamp or ear clamp tightened over the barbed section for water, air, chemical, and fluid systems. Browse our worm-drive clamp selection for the right size to pair with your fitting.
How do I choose the correct barb size for my hose?
Match the barb OD to the hose's inside diameter (ID) — the barb should be equal to or slightly larger than the hose ID so the hose must stretch slightly over the barbs for a tight grip. If the barb is too small, the hose will slip off or leak; if it is too large, you risk splitting the hose during assembly. Measure your hose ID directly or check the hose manufacturer's spec sheet. Use our Hose Barb Sizing Chart to cross-reference hose ID to the correct barb fitting size.
What material barb fitting should I use for chemical or solvent service?
Brass barb fittings are compatible with water, air, fuel, coolants, and many mild chemicals, but they will corrode in contact with strong acids, caustics, chlorinated solutions, or ammonia. For aggressive chemical service, use 316 stainless steel or polypropylene barb fittings instead of brass. Always verify chemical compatibility between the fitting material, the hose material, and your process fluid before installation — particularly for chemical dosing and water treatment applications where both brass and certain hose materials can degrade.