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Bonfix Alu-Press Straight Coupling 40 mm – Brass Press Fitting for PEX-AL-PEX Pipe
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Description
What is this Bonfix alu-press fitting?
The Bonfix Alu-Press brass straight coupling 40 mm is a press fitting designed to connect two multilayer pipes (PEX-AL-PEX) with an outer diameter of 40 mm. This fitting is widely used in drinking water, heating and cooling systems where a reliable and leak-free connection is required.
The fitting is made of high-quality brass and features a stainless steel press sleeve with an EPDM seal. This ensures a durable connection that can withstand high pressure and temperature.
This 40 mm press coupling is commonly used in larger installations such as apartment buildings, commercial properties and main distribution lines, where higher flow capacity is required compared to smaller pipe sizes.
Why choose an alu-press fitting?
Press fittings are one of the most commonly used connection methods in modern installation systems. Unlike soldering or compression fittings, the connection is created by permanently pressing the fitting onto the pipe using a press tool.
This results in:
- fast installation
- leak-free connection
- high reliability
The PEX-AL-PEX system combines:
- flexibility of plastic
- dimensional stability of aluminium
- corrosion resistance of brass
This makes it highly suitable for modern installations in both residential and commercial environments.
Applications
This Bonfix 40 mm press coupling is used in:
- drinking water systems
- heating systems
- cooling systems
- industrial installations
- compressed air systems
The fitting is designed for multilayer pipe 40 × 3.5 mm and is compatible with multiple press profiles.
Advantages of this Bonfix press fitting
- quick installation using press tools
- reliable leak-free connection
- suitable for drinking water and heating systems
- corrosion-resistant brass
- compatible with multiple press profiles
- long service life
Installation
For correct installation, follow these steps:
- Cut the multilayer pipe square using a suitable pipe cutter
- Calibrate and deburr the pipe
- Insert the pipe fully into the fitting until it reaches the stop
- Press the connection using a suitable press tool
- Visually check the connection
Suitable press profiles include TH, H and U.
Always use tools and components that are compatible with the selected press system.
Why buy from Energyby?
Energyby specialises in high-quality installation materials for heating, plumbing and solar thermal systems. When you order from us, you benefit from:
- fast delivery from stock
- competitive pricing for professionals and DIY users
- reliable A-brands such as Bonfix
- expert technical advice
- a wide range of multilayer press fittings and accessories
Browse our full range of alu-press fittings and build a complete, reliable installation system with compatible components.
Specifications
| Article number | 2000145 |
| EAN nummer | 8717845019143 |
| Brand | Bonfix |
| Model | Straight (muff) |
| Connection | Press |
| Number of connections | 2 |
| Connection diameter | 40x40 mm |
| Pipe size | 40x3.5 mm |
| Fitting material | Brass |
| Press sleeve material | Stainless steel |
| Sealing material | EPDM O-ring |
| Max. operating temperature | -20°C to +90°C |
| Peak temperature | 120 °C |
| Max. operating pressure | 10 bar |
| Certification | dvgw kiwa |
| Press profile | TH H U B F CH |
| Application | Heating Tap water cooling Oil-free compressed air |
| Collecties 2 | Alu-press fittings |
| Suitable for | Drinking water Compressed air Heating water Cooling water |
Frequently Asked Questions
When should you use a 40 mm press coupling?
This size is used in systems requiring very high flow capacity, such as industrial installations and main pipelines.
Which pipe is compatible?
Suitable for multilayer pipe 40 × 3.5 mm (PEX-AL-PEX).
What is the difference between 32 mm and 40 mm?
40 mm is used for the largest systems and highest flow capacity.
Is 40 mm suitable for main pipelines?
Yes, this size is typically used as a main distribution pipe.
Which press profile is required?
TH, H and U are commonly used. Professional tools are recommended for this size.
Is this fitting suitable for drinking water?
Yes, suitable for drinking water systems.
What happens if the pipe is not properly prepared?
What happens if the pipe is not properly prepared?
When should you choose 40 mm instead of 32 mm?
When maximum flow, long pipe runs or high demand systems are required
