Choosing the Right PEX Fittings: Brass or Plastic? Expansion or Crimp?

When it comes to plumbing with PEX (cross-linked polyethylene) tubing, selecting the right fittings is crucial for ensuring a durable and leak-free system. At 247Garden, we offer both PEX crimp and PEX expansion fittings, available in brass and plastic, to suit different applications. But which type should you choose? Let’s break it down and help you make the best decision for your project.

Brass vs. Plastic PEX Fittings

Brass PEX Fittings

Pros:

• Highly durable and resistant to high pressure.
• Works well with both crimp and expansion connections.
• Suitable for a wide range of temperatures and water conditions.

Cons:

• More expensive than plastic fittings.
• Can corrode in aggressive water conditions with high chlorine content.

Best for:

• High-pressure systems, such as main water supply lines.
• Residential and commercial plumbing where longevity is a concern.

Plastic PEX Fittings (Poly Alloy)

Pros:

• Corrosion-resistant, making them ideal for areas with high chlorine levels.
• Lightweight and cost-effective.
• Works well with expansion and crimp connections.

Cons:

• Slightly less durable than brass in high-pressure applications.
• Bulkier in size compared to brass fittings.

Best for:

• Residential plumbing in areas with corrosive water conditions.
• DIY and budget-conscious installations.
• Underground applications where corrosion is a concern.

Expansion vs. Crimp PEX Connections

PEX Expansion (F1960 Standard for Plastic & F1960 for Brass)

This method uses an expansion tool to stretch the PEX pipe before inserting a fitting. As the pipe contracts, it creates a tight, leak-free seal around the fitting.

Pros:

• Creates a more secure and flexible connection.
• No risk of damaging the pipe with over-crimping.
• Works well in cold weather applications.
• Used in F1960 Brass and F1960 Plastic fittings.

Best for:

• Professional installations where long-term reliability is crucial.
• Cold-weather applications where pipe flexibility is needed.
• PEX-A tubing, which expands more easily than PEX-B.

PEX Crimp (F2159 Standard for Plastic & F1807 for Brass)

This method uses a crimp ring and tool to secure the PEX pipe onto the fitting.

Pros:

• Faster and easier to install, making it great for DIY projects.
• Less expensive compared to expansion connections.
• Compatible with both PEX-A and PEX-B tubing.

Best for:

• DIYers and contractors looking for a quick, effective installation.
• General plumbing applications where expansion tools aren’t available.
• PEX-B tubing, which is more rigid and doesn't expand as easily.

Understanding PEX Standards: F1960 vs. F2159 for Plastic & F1807 vs. F1960 for Brass

F1960 (Expansion) vs. F2159 (Crimp) for Plastic Fittings

• F1960 plastic fittings require an expansion tool and offer a more secure connection over time.
• F2159 plastic fittings use crimp rings and a PEX crimper and are easier to install.

F1807 (Crimp) vs. F1960 (Expansion) for Brass Fittings

• F1960 brass fittings require an expansion tool and provide a stronger connection with fewer failure points over time.
• F1807 brass fittings, equivalent to plastic PEX F2159, use crimp rings and a PEX crimper, making them widely used in traditional PEX plumbing.

Why Choose 247Garden PEX Fittings?

247Garden offers high-quality, NSF-certified PEX fittings, ensuring they meet strict health and safety standards. Here’s why NSF certification matters:

• Health & Safety: Ensures the fittings are free from harmful contaminants and are safe for drinking water systems.
• Performance Reliability: Certified to withstand the pressures and temperatures commonly found in home and commercial plumbing.
• Code Compliance: Many local and national plumbing codes require NSF-certified products.

Which PEX Fitting Should You Use?

Final Thoughts

Choosing the right PEX fittings depends on your specific needs. For long-term durability, F1960 Expansion Brass is an excellent choice, while F1807 Crimp Brass is a great all-around option. If you’re dealing with high-chlorine water, F1960 Plastic fittings provide the best corrosion resistance.

247Garden offers a full range of PEX fittings to suit any project. Whether you're a homeowner, contractor, or professional plumber, you can trust our NSF-certified fittings for reliable performance. Shop our selection today and get free shipping anywhere in the USA!

Visit 247Garden.com to explore our full range of PEX fittings!