Hiya, it’s Plumb—your favorite plumbing mascot with a heart of gold and a toolkit full of wisdom. Today, we’re diving into a classic plumbing essential: copper fittings. Whether you're a seasoned pro or a first-time fixer-upper, this one's for you.
So, what are copper fittings? Let’s start with the basics.
What Exactly Are Copper Fittings?
Copper fittings are the connectors used to join pieces of copper pipe together in a plumbing system. They're the elbows, tees, couplings, and adapters that help your water go where it's supposed to—without leaks or drama.
They're made from copper, a metal known for its strength, corrosion resistance, and ability to carry hot and cold water safely.
Think of copper fittings as the joints in a skeleton: they let everything bend, turn, and flow naturally.
What Types of Copper Fittings Are There?
Copper fittings come in many shapes and sizes. Here are the most common ones:
Elbows – Change direction (usually 45 or 90 degrees)
Tees – Split flow into three directions
Couplings – Connect two straight pipes
Caps – Seal the end of a pipe
Adapters – Transition between copper and threaded pipe (like NPT)
How Do You Install Copper Fittings?
There are three main ways to connect copper fittings to pipe:
1. Sweat (Soldering)
The traditional method: clean, flux, heat, and solder
Great for long-term durability
2. Press Fittings
Use a press tool to create a flameless mechanical seal
Quick and safe for tight or flame-sensitive areas
3. Push to Connect
Like SharkBite fittings—just push it on
Ideal for DIYers or emergency repairs
Plumb’s tip: Always clean and prep your pipe ends, no matter which method you use. Clean pipe = clean install.
Why Choose Copper Fittings?
Copper is the gold standard of plumbing fittings—and here's why:
Long lifespan (50+ years when installed correctly)
Safe for drinking water (naturally antimicrobial)
Handles high heat and pressure
Corrosion resistant (won’t rust like steel or iron)
Trusted in homes, hospitals, and even skyscrapers—copper fittings deliver performance where it counts.
FAQs: Copper Fittings 101
1. Are copper fittings pure copper?
Almost. Most are 99.9 percent copper with small amounts of phosphorus for strength and weldability.
2. Can copper fittings be threaded?
Yes, some can—especially adapter fittings that connect to NPT threads.
3. Do copper fittings work with PEX or CPVC?
Yes, but only with proper transition fittings or push to connect styles.
4. What’s the difference between Type L and Type M copper?
Type L is thicker and more durable. Type M is thinner, more affordable, but may not meet building codes in every area.
Final Thoughts from Plumb
So, what are copper fittings? They’re the hardworking heroes of any plumbing system. Whether you’re sweating them on, pressing them in, or pushing them to connect, copper fittings keep your water flowing smoothly and safely.
Need copper fittings for your next job?
Check out the full selection of Copper Fittings
Stay solid. Stay sealed. Stay Plumbfounded.