AutoPot AV5 16mm Quick Click to 9mm Barbed Reducer - Connect Larger Tanks to Your AV5 System
Best for: Growers connecting a larger tank or reservoir's 16mm quick-click pipework down to an AutoPot AV5 system's 9mm barbed fittings.
Our thoughts
Mixing pipe sizes across a grow system is one of those small things that trips people up when they're expanding - the tank's on 16mm, the AutoPot modules are on 9mm, and suddenly nothing connects. This little step-down adapter is exactly the fix, and it's the sort of part worth having a couple of spares of once you start building out a bigger system.
This is a step-down adapter that connects 16mm quick-click pipe, the size commonly used for tank and reservoir outlets, down to 9mm barbed fittings, the size used throughout AutoPot's AV5 range of modules and pipework. If you're connecting a larger external tank to your AutoPot system, or mixing pipe sizes anywhere in a custom setup, this is the fitting that bridges the two.
It uses a quick-click connection on the 16mm side for a tool-free push-fit onto standard 16mm pipe, and a barbed connection on the 9mm side designed to grip onto AutoPot's 9mm flexi pipe securely.
How it compares
This is a small, specific fitting rather than a product with direct branded competitors.
- Without a reducer like this, connecting a 16mm tank outlet to 9mm AutoPot pipework would mean cutting and re-fitting pipe or improvising a join, which risks leaks.
- Generic aquarium or irrigation reducers exist but aren't sized or barbed specifically to match AutoPot's AV5 pipe dimensions, so fit and seal reliability isn't guaranteed the same way.
- Buying the correct AutoPot-specific reducer costs a couple of pounds and avoids any guesswork on fit.
A cheap, purpose-made fitting that removes the guesswork of connecting mismatched pipe sizes.
Usage guidance
A small part, but worth fitting correctly to avoid leaks.
Fitting the 16mm end
Push the quick-click end firmly onto your 16mm pipe until it seats fully - you should feel it click into place.
Fitting the 9mm end
Push your 9mm AutoPot flexi pipe onto the barbed end until it's seated past the barb, ensuring a tight seal.
Checking for leaks
Run water through the system after fitting and check both connections before leaving it unattended.
Technical specifications
- Connection 1: 16mm quick-click
- Connection 2: 9mm barbed
- Function: step-down adapter between pipe sizes
- Compatible system: AutoPot AV5 range
- Fitting type: push-fit, tool-free
Who this is for
- Growers connecting a larger external tank to an AutoPot AV5 system
- Anyone building a custom multi-size pipework setup
- AutoPot users expanding a system beyond the standard bundled tank size
- Growers who've hit a pipe-size mismatch mid-build
Best suited to anyone running or building AutoPot systems where tank and module pipe sizes don't match.
Our take
A small, inexpensive fitting that solves a specific, common problem in AutoPot setups - worth having on hand if you're running anything beyond the most basic single-module system.
Gets the job done properly - reliable performance at a sensible price.
