What is CTS in Plumbing?
Last Updated: February 27, 2025
So, what is CTS? It’s a type of tubing that helps carry water in your home, just like a straw helps you drink. It’s super important for plumbing!
A question that pops up time and time again is what is cts in plumbing. I’ve dealt with this plumbing setup many times in Irvine, and I’m here to help you understand it better.
In this guide on what is cts in plumbing, we’ll cover what CTS is, how to install CTS materials, the costs involved, factors that affect installation, special considerations for using CTS systems, and when to consult an expert.
Table of Contents
- What is CTS in Plumbing?
- What is ‘CTS’?
- Before You Start With CTS in Plumbing…
- Understanding CTS Material Types
- Comparing CTS Material Types
- Common Applications for CTS Materials in Plumbing
- How to Install CTS Plumbing Materials
- Special Considerations for Using CTS Plumbing Systems
- Differences Between CTS and Other Plumbing Standards
- Why Use CTS for Your Plumbing Needs?
- When to Consult an Expert for CTS Plumbing Services
- You, the Unlikely Plumbing Hero Of Irvine
- Final Words on CTS in Plumbing
- Useful References
What is CTS in Plumbing?
CTS stands for Copper Tube Size, which measures the diameter of copper pipes used in plumbing. This size is crucial for designing systems that need to fit various fittings. CTS also applies to some plastic pipes. Simply put, it’s all about matching the right pipe sizes!
What is ‘CTS’?
CTS stands for Copper Tube Size. It’s a specific standard used mainly for plumbing applications, especially with copper and plastic pipes. In the CTS measuring system, pipe sizes are shown by the nominal size and a maximum dimension. For example, a 1-inch (25.4 Mm) CTS pipe has an inside diameter (ID) of about 25.4 mm, meaning you’re working with a tight fit for high-flow situations.
I had a friend who relied on CTS for his home repiping project in Irvine. He chose CTS fittings for a strong, reliable connection. Now, talking about the $PASF (Projected Accountable Service Fee), he spent around $400 to complete his entire replumbing with CTS and the fittings installed—including materials and labor.
Before You Start With CTS in Plumbing…
What do you need to get prepped for your CTS plumbing project here in Irvine, CA? Let’s break it down.
- CTS PipeYou’ll need CTS pipes, like the 3/4 inch (19.05 Mm) schedule 40 CTS pipe. It’s crucial for running proper water lines since they’re perfect for hot and cold water management.
- Pipe CutterA high-quality pipe cutter is a must. Consider the Taylor 71001 pipe cutter; this tool ensures clean, straight cuts for a solid connection during your installation.
- CTS FittingsDon’t forget to grab CTS fittings, such as the Apollo 4033824600. These will connect your pipes securely and keep your system leak-free.
- PTFE TapeBack yourself up with PTFE thread seal tape, like the Intertown Products TE081. This tape helps seal joints, preventing pesky leaks in your plumbing setup.
- Primer and GlueDon’t skip solvent cement, like Oatey Blue America Glue. It’s essential for bonding plastic pipes and fittings to create a durable system.
So far we covered important considerations before starting with CTS in plumbing. Let’s look at the different types of CTS materials next.
Also See: Is Liquid Plumber Safe for PVC Pipes? Find Out Now!

Understanding CTS Material Types
Let’s break down the different materials that fall under CTS (Copper Tube Size) standards and how they fit into your plumbing system.
- Copper Pipes: The most common type of CTS material due to its durability and resistance to corrosion. For instance, type K copper has a thicker wall and is perfect for underground installations. It can handle water temperatures up to 200°F (93°C).
- PVC Pipes: Often used for drainage, waste, and venting (DWV), these plastic pipes are lightweight and easy to install. However, they can’t handle high heat, typically maxing out at about 140°F (60°C).
- CPVC Pipes: Similar to PVC but rated for hotter water, CPVC can endure temperatures up to 200°F (93°C) and is commonly used for hot water distribution.
- PEX Tubing: This flexible plastic tubing is gaining popularity due to its ease of installation. It’s ideal for retrofitting and can expand, making it less prone to bursting in cold weather.
You should now have a good understanding of CTS material types. In the next part, we’ll discuss comparing these types.
Comparing CTS Material Types
Here’s a quick comparison table to help you visualize the differences between these CTS materials.
Material Type | Max Temp (°F) | Resistance to Corrosion | Typical Use |
---|---|---|---|
Copper | 200 | High | Hot & Cold Water Lines |
PVC | 140 | Medium | Drainage and Venting |
CPVC | 200 | Medium | Hot Water Distribution |
PEX | 200 | Medium to High | Retrofits and Flexible Installations |
We’ve wrapped up the comparison of CTS material types here. Let us turn our attention to common applications for CTS materials in plumbing.
Common Applications for CTS Materials in Plumbing
Different materials suit various plumbing tasks. Here are some common applications for each:
- Copper: Best for kitchen and bathroom plumbing due to its ability to withstand high pressure and temperatures.
- PVC: Ideal for sink drains and vent pipes, especially in homes built in the 90s to mid-2000s.
- CPVC: Commonly found in newer homes for efficient hot water systems.
- PEX: Widely used in home renovations and new construction due to fast installation times and flexibility.
We have now covered common uses of CTS materials in plumbing. Next, we will discuss the installation of CTS plumbing materials.

How to Install CTS Plumbing Materials
Now, let’s dive into the steps to install CTS plumbing materials effectively. Follow these steps, and you’ll be right on track!
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Measure and Cut the CTS Pipes
Start by measuring where you’ll install the CTS pipes. Use a tape measure and mark your cuts with a pencil. When it comes to measuring, being off by even an eighth of an inch (About 3.2 Mm) can cause huge headaches during installation.
Grab a sharp pipe cutter and ensure it’s straight on the marks for a smooth edge. Take your time here; if there’s one thing I’ve learned as a plumber, it’s that clean cuts lead to snug fittings and minimize leaks later on. If you’re curious about how plumbing techniques have evolved since the 1980s, the precision of your current cutting method plays a crucial role.
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Assemble the CTS Components
Begin by joining the CTS fittings with the cut pipes. Make sure to align everything correctly—failure to do so can lead to improper sealing and inevitable leaks down the line. When working with complex plumbing systems, it’s crucial to understand the role of vertical plumbing risers in maintaining proper water distribution.
Apply the recommended solvent or primer if you’re working with plastic CTS materials. This creates a proper bond and will save you from dealing with leaks in the future; trust me, you want to do this right the first time.
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Test the System
Once everything is assembled, it’s time to test the system for leaks. Turn the water back on and check all joints and fittings thoroughly, giving each connection a good visual inspection.
If issues arise, don’t panic; simply disassemble the problem joint and reapply your solvent or tape carefully. This troubleshooting step can make a huge difference when leaks are found—early detection is key.
Pro Tip: Always double-check your measurements before cutting; it’s one of the easiest ways to prevent mistakes.
Special Considerations for Using CTS Plumbing Systems
This section highlights key technical factors you need to keep in mind when dealing with CTS plumbing systems.
- Fitting Compatibility: Ensure that CTS (Copper Tube System) fittings match the size and type of your pipes. You typically find them in sizes of ½ inch (12.7 Mm), ¾ inch (19.05 Mm), and 1 inch (25.4 Mm).
- Pressure Ratings: CTS systems generally handle up to 80 PSIG (Pounds Per Square Inch Gauge) for water distribution, but be sure to check your local plumbing codes here in Irvine.
- Temperature Sensitivity: Keep the piping insulated if it’s in areas exposed to extreme heat or cold. CTS systems usually function well between 1°F (-17°C) and 160°F (71°C).
- Expansion Considerations: Since polymers expand and contract, consider that you need about 0.5 inches (12.7 Mm) of expansion for every 10 feet (3 Meters) of pipe when it’s installed in long runs.
- Impact on Water Quality: Use food-grade materials if your CTS pipes are for drinking water systems to avoid leaching chemicals. Local businesses in the OC often stock the right materials!
Differences Between CTS and Other Plumbing Standards
Understanding how CTS compares to other plumbing pipe standards is key for your projects. Let’s dive into a few other common standards and see how they stack up against CTS. If you’re wondering about the legal implications of plumbing repairs, you might want to explore tenant responsibilities for plumbing issues.
Standard | Type | Nominal Size (Inches) | Common Uses |
---|---|---|---|
CTS | Copper & Plastic | ½, ¾, 1 | Water Supply Lines |
IPS | Iron & PVC | ½, ¾, 1, 1½ | Sewer & Drainage |
DWV | Cast Iron & PVC | 1½, 2, 3, 4 | Draining Systems |
Schedule 40 | PVC | ½, ¾, 1, 1½ | General Plumbing |
Why Use CTS for Your Plumbing Needs?
Choosing CTS has its perks—let’s check out why it’s often the go-to choice for homeowners in Irvine.
- Durability: CTS pipes, especially copper, can last for decades and resist corrosion.
- Easy to Work With: The pipe size standard makes it straightforward to find fittings that match.
- Versatile Applications: You can use CTS in numerous plumbing scenarios, from hot water lines to drain systems.
- Health Safety: Copper is antimicrobial, making it a safe option for drinking water systems.
When to Consult an Expert for CTS Plumbing Services
So, when should you wave the white flag and call in an expert for CTS plumbing?
If you’ve got ongoing corrosion or leaks in your copper tubing, it’s definitely time to reach out to a pro. Look for someone who’s been around the block in plumbing, especially with CTS connections. Those veterans usually have the know-how you need! When dealing with complex pipe systems, you might want to explore advanced plumbing distribution techniques.
From my own experience hustling through Irvine, I’ve seen amateur repairs go south, mainly due to a lack of proper knowledge. Check their credentials and make sure they know all about building codes—cause not following those can get costly, real quick. Think fines and additional repairs. If they suggest using low-quality materials, just turn back. When navigating complex plumbing responsibilities, it helps to understand landlord plumbing repair obligations.
On top of that, always ask if they can provide before-and-after photos or customer references. You’ll want someone who’s got a stellar reputation here in Orange County. As I’ve discovered, a stoked homeowner showing off their smooth, fixed pipes usually tells you all you need to know! Interestingly, plumbing technology has dramatically evolved since the late 19th century, with modern plumbing techniques far surpassing early indoor plumbing innovations.
You, the Unlikely Plumbing Hero Of Irvine
Ever found yourself knee-deep in a plumbing conundrum, right here in Irvine, CA? Literally, it’s a whole journey! But don’t worry, I’ve been through it plenty of times.
Take that time when the OC heatwave dried up everything, and my showerhead felt like it was coughing rather than raining. It was enough to make anyone pull their hair out. But with some trusty tools and a bit of ‘Cali’ know-how, I took on the challenge.
This brings me to a common issue you might face: leaky faucets. They’re like the mosquitoes of plumbing—annoying and relentless. You might think, “It’s just a drip,” but over time, that drip adds up to some serious water waste. In other words, it can hit you right in the wallet when the bill arrives! If you’re feeling handy and want to tackle minor repairs yourself, check out some practical DIY plumbing techniques.
So here’s a quick fix: all you need is a new washer and a screwdriver. Just turn off the water supply, take apart the faucet, swap out the washer, and put it back together. Voila! You’ve just saved yourself from a higher water bill this month. If you’re renting and unsure about your plumbing repair responsibilities, check out plumbing maintenance guidelines.
Another plumbing hiccup we often see in Irvine is clogged drains. With all the lifestyle choices we make here—like those delicious avocado smashes—sometimes the grease and food particles can lead to blockages. I mean, who doesn’t love a good brunch, right? If you’re considering expanding your plumbing expertise into electrical services, you might want to explore owning a multi-trade business.
To tackle this, try pouring a mix of baking soda and vinegar down the drain. Let it fizz for about 30 minutes, then flush with boiling water. It’s a simple, eco-friendly remedy. If you’re dealing with stubborn clogs, you might want to explore renting a professional plumbing snake for more challenging blockages. Perhaps we can get closer to calling you a plumbing pro yourself!
And let’s not forget about the pipes! If you’re considering DIY plumbing work, you might come across CTS (Copper Tube Size) pipes. These lightweight, flexible wonders are perfect for hot water systems and last over 50 years if installed correctly. I’ve done it myself, and trust me—when you know the ropes, it feels pretty darn satisfying! When working with copper pipes, it’s crucial to understand the right soldering techniques for plumbing connections.
But remember, measuring accurately is key to avoiding leaks. And with our hot Cali climate, ensuring those fittings fit snugly is crucial. Trust me, nothing worse than waking up to a soggy carpet because of a loose joint!
Lastly, if you ever feel overwhelmed, just give a shout. I’m always stoked to help a fellow homeowner tackle plumbing – because, at the end of the day, we all deserve a stress-free home, right? If you’re considering turning your plumbing passion into a professional career, check out the steps to become a skilled plumber.
Final Words on CTS in Plumbing
We covered the what CTS is, key considerations before starting, installation steps, cost factors, special considerations, and when to get expert advice.
I trust these tips, based on my hands-on experience, will help you tackle your plumbing challenges with confidence and better understand what CTS is in plumbing. If you need assistance, feel free to check out our services.
Explore more about how Irvine Plumbers can assist you in your plumbing endeavors.
Useful References
- Kardon, R., Hansen, D., & Casey, M. (2015). Code Check Plumbing: A Field Guide to the Plumbing Codes. Taunton Press.
- r/Plumbing on Reddit: CTS fitting
- what does cts mean in plumbing – Plumbers Derby
- What is the difference between pex and cts?