Amtra air tap and T or Y fittings for air pipe
Regular price
$9.00
Regular price
Sale price
$9.00
Unit price
/
per
$3.00 × 3 with no fees
Klarna.
These Amtra accessories fit the standard 4/6 mm air pipe. The metal valve adjusts the flow. The T and Y fittings, sold in pairs, share the air from one pump between several diffusers.
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The summary
- Which accessory: a valve to adjust the flow, a T or a Y to split it.
- Which tubing it suits: standard 4/6 mm airline tubing.
- How to balance the flow: a valve on the branch that receives the most air.
- How many per pack: one valve, or two fittings.
Adjusting and splitting the air from one pump between several diffusers
As soon as your air pump has to supply a second diffuser, its output has to be shared. The Amtra T and Y fittings split the pipe into 2 branches, and the metal valve is then placed on one of them to adjust its flow, so that each diffuser gets its share. All of them fit the standard 4/6 mm air pipe, simply by pushing it onto the nozzles.
🫧 Building an air circuit
Cut the pipe at the point where you want to split it, push each end onto the fitting, then add a valve on the shorter branch, the one that receives the most air. Switch the pump on and gradually close the valve until the bubbles are even. The T and the Y do the same job, but their shape changes the routing of the pipes: the Y spreads the 2 branches in the same direction, whereas the T sends them out to either side of the inlet.
A single non-return valve before the split
An Amtra non-return valve placed before the fitting protects all the branches at once when the pump stops. It stops the water in the tanks from flowing back towards the pump by siphoning, which would damage its diaphragm. So you only need one valve per pump, however many fittings you add afterwards.
Keep the fittings above the water level, where they stay dry and accessible. Run the pipe along the cabinet and secure it with a few clip suckers, then place the fitting and the valve at hand height, above the tank, so that an adjustment requires neither plunging your hands into the water nor moving the cabinet. Cut the pipe to the right length: any excess left dangling ends up kinking and restricting the air.
🔧 Balancing several diffusers
Air always takes the path of least resistance. If your two diffusers share a single fitting, the one that is shallower, or cleaner, receives the larger share, and the other may end up producing no bubbles at all. That is why a valve almost always goes with a fitting: it restricts the branch that is getting too much and sends the air back to the other. Its metal dial then holds its setting, even when you move the pipes around for maintenance.
An example: an air pump with two outlets has to supply three diffusers, one in the fish tank and two in a grow bed. The first outlet goes directly to the fish tank. The second goes through a Y fitting, then each branch of the Y feeds a diffuser, and a valve on the shorter branch evens out their bubbles. You will therefore need here a pack of Y fittings, a valve and about 2 metres of extra pipe.
When the bubbles suddenly weaken, look for the leak along the circuit. A drop of soapy water placed on each fitting will foam where air is escaping, and a poorly seated end piece often hisses audibly. A pipe that has hardened over the years loses its grip: replace it rather than adding clips. The pack of 2 fittings leaves you with a spare.
Two diffusers
A T or a Y splits the air, and a valve balances the two branches.
Flow too strong
A tap fitted on its own on the pipe restricts the flow.
Three diffusers
Two fittings placed one after the other give three branches.
Spare
The pack of two keeps a fitting in reserve.
🌱 In aquaponics
In your system, a single pump often aerates both the fish tank and a deep water culture grow bed, where the roots are permanently submerged and depend on the dissolved oxygen that the bubbles provide. A Y-connector and a valve are enough to adjust each tank, and when a diffuser becomes clogged, opening the valve a notch rebalances the aeration. The guide to maintaining your aquaponic system in summer explains why aeration needs to be stepped up when the water warms.
Technical specifications
The three accessories
- Metal tap
- 1 outlet, adjusts the flow rate
- T fitting
- Pack of 2, opposite outlets
- Y fitting
- Pack of 2, outlets facing the same direction
- Pipe
- 4/6 mm
To budget for separately
- Air pipe
- 4/6 mm, cut to the length you need
- Protection
- Non-return valve
In the box
- 1 metal tap, or 2 T fittings, or 2 Y fittings, depending on the accessory chosen
Pipe diameter, references and pack sizes taken on 11/10/2026 from the manufacturer's Amtra data sheets.
Which accessory for your air pipe?
Three parts for two needs: adjusting the flow, or splitting it.
Tap: T or Y?
Two answers, and the table highlights the part that suits you.
| Function | Shape | Parts | Price | |
|---|---|---|---|---|
| Metal tapYour choice | Adjusting the flow | Dial, single outlet | 1 | $9.00 |
| Tee connectors, pack of 2Your choice | Sharing the air | Opposite outlets | 2 | $5.00 |
| Recommended Y connectors, pack of 2Your choice | Sharing the air | Outlets facing the same way | 2 | $5.00 |
Metal tap
What the part does
FunctionAdjusting the flow
ShapeDial, single outlet
Parts1
Tee connectors, pack of 2
What the part does
FunctionSharing the air
ShapeOpposite outlets
Parts2
Y connectors, pack of 2Recommended
What the part does
FunctionSharing the air
ShapeOutlets facing the same way
Parts2
Pipe diameter and pack size recorded on 11/10/2026 from the Amtra manufacturer's data sheets.
Help choosing
Two questions about your air pipe
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Delivered to your home by Colissimo or Chronopost, as you prefer at checkout. The exact cost is shown in the basket, according to the total weight of your order.
Frequently asked questions
6 questions
6 key questions
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Summer
Maintaining your aquaponic system in summer
Add diffusers when the warm weather sets in.
Read the article
Guide
Guide
Summer
Start-up
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