Aqua Source 12mm Air Line Tee

Aqua Source Airline Tee – 12mm

12mm T-Shaped Connector for Pond Airline and Aeration Systems

The Aqua Source Airline Tee – 12mm is a practical T-shaped hose fitting designed for connecting and dividing compatible 12mm air lines within pond, koi pond, aquarium, and aquatic aeration systems. It provides a simple way to split one main air-supply line into two separate branches, allowing air from a compatible pump or manifold to be distributed to multiple aeration points.

This fitting is particularly useful when a single air pump needs to supply more than one air stone, diffuser, aerated bottom drain, filter chamber, or other aeration component. Instead of installing completely separate main hoses from the pump, the tee connector allows the existing air line to be divided at the required location, helping create a cleaner and more organised installation.

The three-way design includes one inlet and two outlet routes, although the direction of airflow depends on the layout of the connected system. Each end is designed for use with compatible 12mm air hose, such as the Aqua Source White Air Line. The air hose is pushed securely onto each connection point to create a continuous route through which air can pass.

The Aqua Source Airline Tee can be installed near a pond, inside a filtration room, beside an air pump, or along an existing airline route. Its compact shape makes it suitable for systems where space is limited and a neat hose arrangement is required. It can also help reduce the number of long individual hose runs needed across a pond or equipment area.

Using a tee fitting makes it easier to plan a balanced air-distribution network. For example, one branch may supply an air stone in the main pond while the second branch supplies a diffuser inside a filter chamber. It may also be used to divide an airline between two air stones or between two sections of a larger pond system.

Because the fitting does not independently regulate airflow, the amount of air reaching each branch may depend on hose length, equipment resistance, diffuser depth, and the overall air-pump output. Where individual airflow adjustment is required, compatible air valves or manifolds may be added to the system.

The 12mm size makes this fitting suitable for larger pond aeration lines rather than small aquarium-style airline tubing. It is ideal for use in koi pond systems where a reliable air supply is required across several components or aeration points.

Whether it is being used for a new installation, an extension to an existing air system, or the replacement of an old connector, the Aqua Source Airline Tee provides a convenient and straightforward way to create a three-way connection within a compatible 12mm airline network.

Features

• T-shaped connector for compatible 12mm air hose
• Divides one airline into two separate branches
• Creates a practical three-way air connection
• Suitable for pond and koi pond aeration systems
• Can connect air pumps, air stones, diffusers, and aerated drains
• Helps create a tidy and organised airline layout
• Useful for new installations, extensions, and repairs
• Compact design for filtration and equipment areas
• Suitable for use with Aqua Source 12mm White Air Line
• Part of the Aqua Source air hose fittings range

When to Use

• Splitting one pond airline into two branches
• Connecting two air stones to a main air-supply hose
• Supplying air to multiple pond diffusers
• Dividing airflow between a pond and filtration chamber
• Connecting an aerated bottom drain and a separate diffuser
• Extending an existing koi pond aeration system
• Creating a branched airline layout inside a filter house
• Replacing a damaged or unsuitable 12mm tee fitting
• Reducing the need for multiple long hoses from one pump
• Building a custom pond air-distribution network

How It Works

Connect the main 12mm air-supply hose to one side of the tee fitting. Connect two additional 12mm hose sections to the remaining connection points.

When the air pump is operating, air enters the fitting through the main supply line and is divided between the two connected branches. Each branch can then deliver air to an air stone, diffuser, aerated drain, manifold, or other compatible component.

Push each hose firmly onto the fitting to help create a secure connection. Depending on the hose type, system pressure, and installation requirements, suitable hose clips or securing components may also be used.

For more precise control over the airflow in each branch, compatible valves may be installed after the tee connector.

Installation Guidance

• Switch off the air pump before changing the airline arrangement.
• Confirm that all hoses and fittings are compatible with the 12mm connection size.
• Cut the airline cleanly and squarely before fitting.
• Push the hose fully onto each connection point.
• Position the tee where it will not be crushed, pulled, or accidentally disconnected.
• Avoid sharp bends in the hoses immediately beside the fitting.
• Check all connections after restarting the air pump.
• Use separate control valves where balanced or adjustable airflow is required.

Product Specifications

Brand: Aqua Source
Product Name: Airline Tee
Product Type: T-shaped airline connector
Connection Size: 12mm
Number of Connections: Three
Configuration: One line divided into two branches
Category: Air Hose Fittings
Suitable Hose: Compatible 12mm airline
Suitable Applications: Koi ponds, garden ponds, aeration systems, air stones, diffusers, aerated drains, pumps, and filter installations

Ideal For

• Koi pond airline systems
• Garden pond aeration
• Air-pump hose distribution
• Air stones and pond diffusers
• Aerated bottom drains
• Filter-house airline installations
• Multi-point aeration systems
• Airline extension projects
• Pond repairs and maintenance
• Custom air-distribution layouts