Can I mix copper fittings with PEX pipe?

Yes, using transition fittings such as copper-to-PEX adapters or push-fit connectors. SharkBite fittings are popular for connecting different pipe materials.

Do I need to use flux when soldering copper?

Yes, flux cleans the copper surface and helps solder flow into the joint. Use lead-free flux rated for potable water systems.

Plumbing

Fittings

$1-$15 per fitting

Copper Pipe Fittings (2026)

Prepared by Lumberama's Building Materials Team

|Last updated September 10, 2026|Sources & methodology

Copper pipe fittings create strong, leak-proof connections in water supply systems using sweat-solder or press-fit methods. Available in elbows, tees, couplings, adapters, and specialty configurations. Lead-free brass and copper fittings ensure safe potable water connections that last for decades.

Key Features

Sweat-solder or press-fit connection
Lead-free for potable water
Copper and brass options
Wide range of configurations
Long-lasting and reliable

Specifications

Types: 90-degree elbow

45-degree elbow

tee

coupling

adapter

union | Sizes: 1/2

3/4

1-1/2 inches | Materials: Copper (C12200)

lead-free brass | Connection: Sweat-solder or press-fit

Applications

Water supply connections
Direction changes
Pipe transitions
Manifold branches
Repair couplings

Installation Overview

Clean pipe end and fitting interior with emery cloth until shiny. Apply flux to both surfaces. Assemble and heat with propane torch. Touch lead-free solder to the joint until it flows by capillary action around the entire joint.

Pros & Cons

Pros

✓ Extremely reliable connections
✓ Long service life
✓ Universal code acceptance
✓ Lead-free options available

Cons

✗ Requires soldering skill
✗ More expensive than plastic fittings
✗ Torch work near combustibles requires care
✗ Press-fit tools are expensive

Top Brands

Charlotte Pipe

Code Requirements

Must use lead-free solder and flux for potable water per Safe Drinking Water Act. Fittings must meet ASME B16.22. All joints must be accessible for inspection where required.

Buying Tips

Buy a variety of common fittings before starting. Practice soldering on scrap pipe first. Use lead-free solder and flux for all potable water connections. Consider press-fit fittings for faster work.