Bonfix Alu-Press Straight Coupling 25x25 mm | Brass Press Fitting
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Bonfix Alu-Press Straight Coupling 25 mm – Brass Press Fitting for PEX-AL-PEX Pipe

Bonfix Alu-Press Straight Coupling 25 mm – Brass Press Fitting for PEX-AL-PEX Pipe
€ 7,45 incl. VAT
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Description

What is this Bonfix alu-press fitting?

The Bonfix Alu-Press brass straight coupling 25 mm is a straight fitting used to connect two multilayer pipes (PEX-AL-PEX) with an outer diameter of 25 mm. This press 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 25 mm press coupling is often used in medium-sized installations where higher flow is required than with 20 mm systems, but where 26 mm is not necessary.

    Why choose an alu-press fitting?

    Press fittings are one of the most commonly used connection techniques in installation systems. Unlike soldering or compression connections, the fitting is permanently pressed onto the pipe using a press tool.

    This creates a fast, safe and leak-free connection.

    The PEX-AL-PEX system combines:

    • flexibility of plastic
    • dimensional stability of aluminium
    • corrosion resistance of brass

    This makes the system highly suitable for modern installations.

    Applications

    This Bonfix 25 mm press coupling is used in various installations:

    • drinking water systems
    • central heating systems
    • underfloor heating systems
    • cooling systems
    • oil-free compressed air systems

    The fitting is designed for multilayer pipe 25 × 2.5 mm and is compatible with various press profiles.

    Advantages of this Bonfix press fitting

    • fast installation using a press tool
    • reliable leak-free connection
    • suitable for drinking water and heating
    • corrosion-resistant brass
    • compatible with multiple press profiles
    • long service life

    The use of press connections significantly reduces the risk of installation errors.

    Installation and assembly advice

    For correct installation of this press fitting, it is important to 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 for this fitting 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 installation materials for heating and solar thermal systems. With us you benefit from:

    • fast delivery from stock
    • competitive prices for professionals and DIY users
    • reliable A-brands such as Bonfix
    • expert advice

    Browse our full range of alu-press fittings in our webshop.

    Specifications

    Article number2000130
    EAN nummer8717845019112
    Brand Bonfix
    Model Straight (muff)
    Connection Press
    Number of connections 2
    Connection diameter 25 mm
    Pipe size 25x2.5 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

    A 25 mm press coupling is used in systems where more capacity is required than with 20 mm pipes, but where 26 mm is not necessary. This makes it an ideal intermediate size for medium-sized installations.
    This fitting is suitable for multilayer pipe 25 × 2.5 mm (PEX-AL-PEX). Using the correct pipe size is essential for a secure and leak-free connection.
    The main difference is flow capacity:
    • 20 mm → smaller installations
    • 25 mm → medium-sized systems
    • 26 mm → larger installations
    The right choice depends on the required flow rate and system size.
    Yes, 25 mm is often used for supply lines to underfloor heating manifolds or in larger circuits where higher flow is required.
    This fitting is compatible with multiple press profiles, including:
    • TH profile
    • H profile
    • U profile
    Always check if your press tool is compatible with the system.
    Yes, this Bonfix press fitting is suitable for drinking water installations and can be safely used in sanitary systems.
    If the pipe is not calibrated and deburred, the sealing ring may be damaged. This can lead to leaks or an unreliable connection.
    No, a press fitting creates a permanent connection. For removable connections, a compression fitting should be used.
    You should choose 25 mm when:
    • longer pipe runs are required
    • multiple outlets are used simultaneously
    • higher flow capacity is needed
    Yes, in medium-sized systems, 25 mm is often used as a main or distribution line between different zones.

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