Aluminium Press Brass Fittings: Fast, Reliable and Easy to Install

Aluminium Press Brass Fittings: Fast, Reliable and Easy to Install

Aluminium press brass fittings join multilayer pipes in seconds: you insert the pipe, press the stainless steel sleeve with the correct press jaw and the connection is permanent and watertight. Choose the fitting size by the outside diameter of the pipe and use the jaw profile that matches the system. Below you will find sizes, press jaws and answers to the 10 most frequently asked questions.

The BONFIX Alu-press system combines a brass fitting with a stainless steel press sleeve and integrated O-rings. The range includes straight couplings, elbows, tees, threaded connections and more.

What is an aluminium press brass fitting?

An aluminium press fitting is used to create a permanent connection between multilayer pipes. The pipe is inserted into the fitting and the connection is then secured using a suitable press tool.

The brass fitting provides a strong connection, while the stainless steel press sleeve and O-rings help create a reliable seal.

Quick conclusion: A press fitting is a practical solution for creating a fast, clean and permanent pipe connection.

Which size press fitting do I need?

The fitting size must match the outside diameter of the multilayer pipe. For example, a 16 x 16 mm coupling is designed for a 16 mm multilayer pipe.

Always check the pipe wall thickness and the technical specifications of the specific system before installation.

Quick conclusion: Choose the fitting according to the outside diameter of your multilayer pipe.

Which press jaw do I need?

The BONFIX Alu-press system supports several press profiles. Depending on the fitting and size, compatible profiles include TH, H and U. Other profiles are also available for the wider BONFIX Alu-press system.

Always check that the press jaw is suitable for both the fitting and your press tool.

Quick conclusion: Check the required press profile before installation to ensure a correct connection.

Are aluminium press fittings suitable for drinking water?

Yes. The BONFIX Alu-press system is suitable for drinking water and central heating installations. The system carries both KIWA-ATA and KOMO quality marks.

The applicable installation regulations and technical documentation should always be followed.

Quick conclusion: Suitable for drinking water when the correct system components and installation procedures are used.

What can aluminium press fittings be used for?

BONFIX Alu-press fittings can be used in a wide range of installation applications, including:

• Drinking water
• Central heating
• Underfloor heating
• Low- and high-temperature applications
• Other suitable fluid installations, depending on the specific product

Always check the product specifications for the intended application.

Quick conclusion: A versatile solution for modern plumbing and heating installations.

How do you install an aluminium press fitting?

Correct preparation is essential for a reliable connection.

1. Cut the multilayer pipe straight to the required length.
2. Calibrate and deburr the inside and outside of the pipe.
3. Insert the pipe fully into the fitting.
4. Check the inspection window to ensure the pipe is correctly positioned.
5. Place the correct press jaw around the fitting.
6. Complete the pressing operation fully and in one movement.

Quick conclusion: Straight cutting, proper calibration and full insertion of the pipe are essential for a reliable press connection.

What does Leak Before Pressed (LBP) mean?

BONFIX Alu-press fittings feature a Leak Before Pressed (LBP) function. If a fitting has not been pressed, a pressure test can make the connection visibly leak. This helps identify a forgotten or incomplete press connection before the installation is put into service.

Quick conclusion: LBP helps installers detect unpressed connections during testing.

Why are the fittings made of brass and the press sleeve of stainless steel?

The combination of materials is designed to provide a reliable and durable connection. The coloured reinforced ring also helps prevent direct contact between the aluminium pipe and the brass fitting, helping to prevent electrolytic corrosion.

Quick conclusion: The different materials work together to support durability, stability and reliable sealing.

Can an aluminium press fitting be pressed twice?

No. According to the BONFIX installation instructions, a press connection must not be pressed more than once. The pressing operation must be completed fully and without interruption. Pressing the connection again can damage the seal.

Quick conclusion: Make one complete and correct press connection. Do not repress the fitting.

Does an aluminium press installation need to be pressure tested?

Yes. Before the installation is put into use, the complete piping system should be pressure tested in accordance with the applicable local installation regulations and technical requirements.

Quick conclusion: Always carry out the required pressure test before commissioning the installation.

Aluminium Press Brass Fittings at Saniso

Saniso offers a wide range of BONFIX Alu-press brass fittings for installers, contractors and construction professionals. From straight couplings and elbows to tees, threaded connections and different sizes.

With fast installation, reliable connections and multiple available press profiles, aluminium press fittings are a practical solution for modern plumbing and heating systems.

Looking for a specific size or fitting? Explore the Alu-press range at Saniso and order online.

10 Frequently Asked Questions About Aluminium Press Brass Fittings

1. What is an aluminium press brass fitting?

A fitting used to create a permanent connection between multilayer pipes using a press tool.

2. Which size aluminium press fitting do I need?

The fitting size should match the outside diameter of the multilayer pipe.

3. Which press jaw do I need?

This depends on the fitting and size. BONFIX Alu-press fittings support profiles including TH, H and U. Always check the current technical documentation.

4. Are aluminium press fittings suitable for drinking water?

Yes. The BONFIX Alu-press system is suitable for drinking water and carries the KIWA-ATA and KOMO quality marks.

5. Are aluminium press fittings suitable for underfloor heating?

Yes. The Alu-press system can be used for suitable heating applications, including underfloor heating. Always check the specifications of the specific product.

6. What does Leak Before Pressed mean?

It means that an unpressed connection can visibly leak during a pressure test, making an incomplete installation easier to identify.

7. Does a multilayer pipe need to be calibrated?

Yes. The pipe should be calibrated and deburred before inserting it into the fitting. This helps prevent burrs from damaging the O-rings.

8. Can an aluminium press fitting be pressed twice?

No. The fitting should be pressed once, fully and without interruption.

9. How do I check whether the pipe is correctly inserted?

Use the inspection window on the fitting to check that the pipe has been inserted far enough before pressing.

10. Does an aluminium press installation need to be pressure tested?

Yes. The complete installation should be pressure tested before use, in accordance with the applicable local regulations and installation requirements.