Deine Zahlungsinformationen werden sicher verarbeitet. Wir speichern keine Kreditkartendaten und haben auch keinen Zugang zu deinen Kreditkartendaten.
When a standard straight coupling won't bridge the gap between your rigid pipe and flexible hose, DIYers and irrigation installers reach for a stepped barb adapter. These PVC barb pipe connector fittings solve the mismatch problem with a pagoda-style stepped barb that grips hose walls firmly without clamps, making them a go-to choice for garden irrigation, aquarium plumbing, and light-duty water transfer projects.
Each fitting is moulded from rigid PVC-U, available in White or Blue, with a large-end socket sized at 20 mm (~¾ in) or 25 mm (~1 in) and a small-end barb sized from 8 mm to 16 mm OD (~5/16 in to ~⅝ in). The pagoda stepped profile provides multiple grip points so the hose seats securely even under moderate water pressure. Sold in packs of 1, 2, 3, 4, 5, 8, 10, 15, or 20 pieces to match your project scale.
Typical applications include drip irrigation line connectors for raised-bed gardens, aquarium filter hose adapters where tubing meets rigid pipe, and pond pump outlet fittings that step down from a 25 mm main line to a 12 mm or 16 mm flexible hose. The colour-coded options (White for potable/general use, Blue for cold-water identification) help keep multi-line systems organised at a glance.
| Material | PVC-U (rigid polyvinyl chloride) |
|---|---|
| Colour Options | White, Blue |
| Big-End Socket OD | 20 mm (~¾ in) or 25 mm (~1 in) |
| Small-End Barb OD | 8 mm, 10 mm, 12 mm, or 16 mm (~5/16 in to ~⅝ in) |
| Connection Type | Socket (pipe end) × Barb (hose end) |
| Fitting Style | Pagoda stepped reducer |
| Recommended Hose ID | See variant options |
| Max Working Pressure | See variant options |
| Pack Quantity | 1 / 2 / 3 / 4 / 5 / 8 / 10 / 15 / 20 pcs |
| Application | Irrigation, aquarium plumbing, pond systems, water transfer |
Measure your hose's outer diameter (OD) — this is the barb end size listed in the variant name (e.g., "20mm×8mm" means the socket fits a 20 mm pipe and the barb fits an 8 mm OD hose). If your hose ID is 8 mm, its OD is typically 10–12 mm; always measure both ends before ordering.
For low-pressure drip irrigation (under ~0.5 bar / 7 psi), the pagoda stepped barb usually holds without clamps. For higher-pressure applications or vibrating pump lines, a stainless steel hose clamp over the barb is recommended for added security.
Yes. The socket end is designed to accept standard PVC-U solvent cement (CPVC/PVC primer + cement). Clean and dry the pipe and socket, apply primer, then cement for a permanent, leak-free bond. The barb end does not require cement.
Yes. PVC-U is UV-tolerant for moderate outdoor exposure and resists common fertiliser and pesticide solutions used in garden drip systems. For prolonged direct sunlight exposure, consider wrapping exposed fittings or burying them slightly in soil.
Both colours use the same PVC-U material and have identical dimensions and performance. Blue is commonly used in plumbing systems to identify cold-water lines, making it easier to distinguish supply lines at a glance in multi-pipe installations.
Standard PVC-U is rated for cold to ambient-temperature water (typically up to ~60°C / 140°F for short durations). These fittings are not recommended for continuous hot water supply lines. For hot water applications, CPVC or PP fittings are more appropriate.
Count the number of branch points where your main 20 mm or 25 mm pipe connects to smaller drip hoses. Order one fitting per connection point, plus 10–15% extra for adjustments. The 10-pack or 20-pack variants offer the best per-unit value for larger installations.
