AutoPot 13mm (16mm External) Irrigation Fittings — Barbed Connectors for Gravity-Fed Systems
Best for: Expanding AutoPot systems or building DIY drip irrigation setups without leaks or guesswork
Our thoughts
If you're running an AutoPot system or building a gravity-fed dripper setup, get the fittings right and half your problems disappear. These barbed connectors are the backbone of any clean, leak-free configuration. One we sell a lot of to growers scaling up their systems.
AutoPot 13mm irrigation fittings (16mm external diameter) are high-quality barbed connector components designed to create water-tight joins between flexible pipe and feed lines in hydroponic and drip irrigation systems. They're the missing link between your main feed line and individual dripper modules — engineered to work seamlessly with AutoPot's modular watering architecture, but equally useful for DIY gravity-fed setups. Simple push-fit installation, no clamps required, proper seals that actually hold.
How it compares
This sits at the professional end of the connector market — precision barbed design rather than generic push-fit alternatives.
- Barbed design grips pipe securely without needing clips (though hose clips recommended for extra peace of mind)
- Water-tight seals reduce the slow weep and pressure-drop nonsense you get with cheap fittings
- Modular — swap, extend, and reconfigure without replacing entire lines
- Compatible across the full AutoPot range (AQUAvalve5 systems and earlier versions)
- Significantly better seal integrity than generic irrigation fittings at the same price point
Usage guidance
AutoPot 13mm fittings work in a hierarchy system — 16mm main pipe branches down through reducer fittings to smaller gauge lines feeding individual modules or drippers.
Expanding an existing AutoPot system
If you're running a six-pot XL system or larger (where 16mm flexi pipe is standard), these fittings let you add new modules, reconfigure layouts, or extend feed lines cleanly. Just identify which reducer you need (4mm or 6mm outlet) and push the smaller pipe onto the barbed end.
Building a DIY drip setup
Run 13mm flexi pipe from your reservoir or water tank. Use tee connectors to branch 4mm or 6mm lines off to individual pots or drippers. The barbed ends do the holding — the 13mm pipe (16mm external) simply pushes over the barb.
Installation tip
If the pipe is stiff, soften it briefly in hot water and it'll slide onto the barbs easily. Use hose clips around the join if you want belt-and-braces security — professional move, no downside.
Fitting types in the range
Straight connectors join two pipes end-to-end. Tee connectors (with 4mm or 6mm outlets) branch smaller lines off the main 13mm run. Cross connectors (with dual 4mm or 6mm outlets) split into two branches. Inline filters sit inside the 13mm line itself, catching debris before it clogs drippers. Elbows change direction. End stops seal off pipe ends. Grommets allow neat entry through container walls or tank lids.
Technical specifications
- Main pipe diameter: 13mm internal, 16mm external
- Connection type: Barbed insert (push-fit, no tools required)
- Seal design: Barbed profile grips pipe securely; water-tight when correctly installed
- Outlet options (tee/cross variants): 4mm or 6mm diameter outlets available
- Material: Durable plastic construction rated for gravity-fed and low-pressure systems
- Pressure rating: Suitable for gravity-fed systems (no pump pressure required)
- Compatibility: AutoPot AQUAvalve5 systems and earlier versions; universal fit for standard 13mm (16mm external) flexible irrigation pipe
- Installation: Push-fit onto barbed end; optional hose clips recommended for security
Who this is for
- AutoPot system owners scaling up from a single-pot module to multi-module setups
- Growers replacing damaged or leaking fittings in existing gravity-fed systems
- DIY growers building custom drip irrigation layouts without commercial irrigation kits
- Anyone running six or more pots where 16mm main lines make sense
- Budget-conscious growers who don't want to buy a whole new system just to add capacity
Particularly valuable if you value simplicity over complexity — no pumps, no timers, no mains pressure. Just gravity and the right fittings.
Our take
These are proper irrigation connectors that do exactly what they should. No leaks, no pressure drops, no bodge-job fixes six weeks down the line. They're the foundation of any clean AutoPot expansion or DIY gravity-fed setup.
If you're building a system bigger than a single pot, or you've got an existing setup and fittings are wearing out, worth picking up while stock lasts. Small investment, massive reliability gain.
