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Are PEX-AL-PEX Press Fittings Compatible with All Types of PEX-AL-PEX Tubing

2025-11-24

When planning a plumbing or heating project, a common and critical question arises: Are PEX-AL-PEX Press Fittings compatible with all types of PEX-AL-PEX tubing? The short answer is that while SUNPLAST fittings are engineered for broad compatibility, confirming specific tubing specifications is essential for a guaranteed, leak-proof system. Not all multilayer pipes are created equal, and using the correct components ensures the renowned performance and longevity of your installation.

PEX-AL-PEX Press Fittings

SUNPLAST PEX-AL-PEX Press Fittings: Designed for Performance

SUNPLAST fittings are precision-manufactured to meet rigorous international standards. They are designed to work seamlessly with PEX-AL-PEX tubing that adheres to common dimensional and material specifications.

Key Product Parameters:

  • Material: Corrosion-resistant brass body with a heat-resistant EPDM O-ring.

  • Operating Pressure: Rated for up to 10 bar at 80°C.

  • Temperature Range: Suitable for -10°C to 95°C.

  • Tube Compatibility: Optimized for standard PEX-AL-PEX tubing dimensions.

Compatible Tube Dimension (Standard) SUNPLAST Fitting Size
16mm x 2.0mm 16mm
20mm x 2.0mm 20mm
26mm x 3.0mm 26mm
32mm x 3.0mm 32mm

PEX-AL-PEX Press Fittings FAQ

What are the advantages of using SUNPLAST PEX-AL-PEX Press Fittings?
The primary advantages are speed of installation and reliability. The press connection system eliminates the need for threading, soldering, or gluing, drastically reducing labor time. The robust design ensures a permanent, leak-proof seal that withstands thermal expansion and high pressure.

Can I use SUNPLAST press fittings with any brand of PEX-AL-PEX tubing?
While SUNPLAST fittings are designed for industry-standard dimensions, we strongly recommend verifying compatibility. Always check that the outer diameter and the aluminum layer position of the tubing match the specifications required by the fitting. Using tubing from an unverified source can compromise system integrity.

What tool do I need to install these press fittings?
You require a specific PEX-AL-PEX press tool and corresponding jaw sets from a reputable manufacturer. The SUNPLAST system is compatible with most standard electric or battery-powered press tools, ensuring a correct and secure connection every time when the correct jaws are used.


For a flawless installation that leverages the full benefits of the PEX-AL-PEX system, choosing the right components is paramount. SUNPLAST provides the quality and reliability that professionals trust. To discuss your specific project needs and get definitive compatibility confirmation, Contact Us today. Our technical experts are ready to assist you.

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