Your Guide on How to Connect Non-Threaded Galvanized Pipe to PEX

Are you looking for a reliable and efficient way to connect non-threaded galvanized pipes to PEX? Look no further, as we have all the information you need to make a successful connection. Whether you’re a DIY enthusiast or a professional plumber, understanding the process of connecting these two types of pipes is crucial .

In this article, we will guide you through the steps, tools, and materials needed to achieve a secure and long-lasting connection. So, if you’re ready to learn how to connect non-threaded galvanized pipes to PEX, let’s dive in! Did you know that galvanized pipes were once the go-to choice for plumbing systems due to their durability and resistance to corrosion?

However, over time, these pipes can become rusty and develop leaks , leading to water damage and costly repairs. That’s where PEX comes in. PEX, or cross-linked polyethylene, is a flexible and versatile pipe material that has gained popularity in recent years.

It offers numerous advantages, including easier installation, resistance to freezing and bursting, and improved water flow. By connecting non-threaded galvanized pipes to PEX, you can enjoy the benefits of both materials while avoiding the drawbacks. So, let’s get started on this exciting journey of pipe connection!

How to connect non threaded galvanized pipe to pex.

At a glance: What’s behind the topic.What you need to know: An overview of the key information

  • This text provides information about galvanized pipes and PEX, including their definitions and how to connect them.
  • The detailed steps to connect non-threaded galvanized pipes to PEX are outlined, including understanding the connection, choosing the right fittings, preparing the pipes, connecting them, and testing the connection.
  • Tips for making a secure connection and maintaining the PEX and galvanized pipe connection are also provided.

how to connect non threaded galvanized pipe to pex

What is a Galvanized Pipe?

Durable and strong, galvanized pipes are a popular choice for plumbing. These steel pipes coated with zinc are resistant to corrosion and rust, making them suitable for both indoor and outdoor use. One advantage of galvanized pipes is their ability to withstand high pressure, reducing the risk of bursting or leaking.

With proper maintenance , they can last for decades. However, there are drawbacks to consider. Over time, the zinc coating can deteriorate, leading to rust and corrosion that can affect water flow and quality.

Working with galvanized pipes also requires special tools and techniques. To prevent and address common issues, regularly inspect the pipes for rust, corrosion, or leaks. If problems are found, replace the affected pipes or apply a protective coating.

While galvanized pipes offer many benefits , it’s important to be aware of their drawbacks and take necessary steps to maintain and fix any issues that may arise.

Do you want to learn more about installing a saddle valve on PEX? Check out our article on saddle valves on PEX for a step-by-step guide and helpful tips!

how to connect non threaded galvanized pipe to pex

What is PEX?

In the realm of plumbing systems, there exists a remarkable material known as PEX. This ingenious creation, an acronym for cross-linked polyethylene, has revolutionized the way pipes are installed. With its incredible flexibility, PEX effortlessly navigates tight spaces and corners, eliminating the need for excessive fittings and joints while minimizing the risk of leaks.

Not only that, but PEX pipes boast unparalleled resistance to corrosion and scale buildup, ensuring their longevity surpasses that of their counterparts. Furthermore, these pipes possess a unique ability to expand and contract without succumbing to the harsh grip of winter, making them ideal for cold climates. Delving deeper, we discover that PEX pipes come in three main variations – PEX-A, PEX-B, and PEX-C – each offering distinct levels of flexibility and durability.

Connecting these pipes is a simple task, accomplished through methods such as crimping or push fittings. In summary, PEX pipes bring forth a myriad of advantages for plumbing systems, including flexibility , durability, and the ability to withstand freezing temperatures . By familiarizing oneself with the various types of PEX pipes and installation techniques , one can ensure the utmost efficiency in their plumbing endeavors .

1/5 Tools and Materials Needed

In order to successfully connect non-threaded galvanized pipe to PEX, it is essential to have the following tools:

1. Pipe cutter and deburring tool: These tools are necessary for cutting the galvanized pipe to the desired length and smoothing out any rough edges, ensuring a seamless connection.

2. PEX crimping tool : This specialized tool is used to securely attach PEX fittings to the PEX pipe , creating a tight and reliable connection that is resistant to leaks .

3. Pipe wrench or adjustable pliers: These tools are used to tighten and loosen pipe fittings, providing the necessary grip and leverage to ensure a secure connection. By having these tools readily available, the process of connecting non-threaded galvanized pipe to PEX becomes much simpler. It is important to always use the appropriate tools for each step in order to achieve a successful and leak-free connection.

how to connect non threaded galvanized pipe to pex

2/5 Preparation

Mastering the art of precision in measuring and cutting galvanized and PEX pipes is vital for a seamless plumbing endeavor. It guarantees a flawless fit, keeping leaks and complications at bay. Equally significant is the act of deburring the pipes, as it eradicates any rough edges that might impede proper sealing.

Remember to opt for the appropriate fittings to ensure a secure connection. By prioritizing these meticulous steps, you pave the way for a plumbing project that is both efficient and leak-free, saving valuable time and guaranteeing success.

How to Connect Non-Threaded Galvanized Pipe to PEX: A Step-by-Step Guide

  • Galvanized pipes are made of steel that has been coated with a layer of zinc to protect against corrosion.
  • PEX, short for cross-linked polyethylene, is a flexible and durable type of plastic pipe that is commonly used in plumbing systems.
  • To connect non-threaded galvanized pipes to PEX, you will need the following tools and materials: PEX tubing, PEX fittings, a PEX crimping tool, a pipe cutter, and a deburring tool.
  • Before starting the connection process, it is important to prepare the pipes by cleaning them thoroughly to remove any debris or residue.
  • There are several types of fittings that can be used to connect non-threaded galvanized pipes to PEX, including compression fittings, push fittings, and Sharkbite fittings.
  • Once the pipes are prepared and the fittings are chosen, you can begin connecting the pipes using the appropriate method. Make sure to test the connection for leaks before completing the project.

Step 1: Understanding the Connection

When it comes to connecting non-threaded galvanized pipes to PEX , there are a few key considerations to keep in mind. Familiarize yourself with the various types of non-threaded galvanized pipes commonly used in plumbing, including grooved ends, plain ends, and pressed fittings . Once you have identified the type of galvanized pipe you are working with, selecting the right fittings becomes crucial.

Take into account factors such as size, diameter, and any specific requirements of your plumbing system. Ensuring compatibility between galvanized pipes and PEX is of utmost importance. While PEX is known for its durability, not all types of galvanized pipes may be compatible.

Conduct thorough research to ensure that the materials you choose will effectively work together. By familiarizing yourself with the different types of galvanized pipes, carefully selecting appropriate fittings, and confirming compatibility with PEX, you can establish a secure and long-lasting connection. These factors are fundamental to achieving a successful connection between your galvanized pipes and PEX.

how to connect non threaded galvanized pipe to pex

Compression Fittings

In the realm of plumbing systems, there exists a marvelous innovation known as compression fittings. These extraordinary contraptions provide a seamless bond between galvanized pipes and PEX, ensuring a connection that is not only secure but also impervious to leaks. The beauty of compression fittings lies in their unparalleled versatility.

They possess the remarkable ability to unite both galvanized pipes and PEX, making them the ultimate choice for a multitude of plumbing projects. What’s more, their installation requires no specialized tools or equipment, saving you precious time and money. Yet, like all things in life, there are a few considerations to bear in mind.

Compression fittings, while undeniably effective, can be pricier compared to other types of fittings such as push or Sharkbite fittings. Additionally, their installation demands a meticulous precision to guarantee a flawless seal. To embark on the journey of installing compression fittings, one must first cut the galvanized pipe and PEX to the desired lengths.

The ends must then be deburred, ensuring a smooth connection. Next, the compression nut and ferrule must be gracefully slid onto the PEX, while the compression fitting finds its rightful place on the galvanized pipe. With a gentle yet purposeful touch, the compression nut is tightened until a secure seal emerges.

One mustn’t forget the importance of tightening the nut with utmost care. A connection that is too tightly bound risks damaging the fittings, while one that is too loosely fastened may result in troublesome leaks. Thus, it is crucial to conduct a pressure test after installation, assessing for any potential leaks and ensuring the integrity of the connection.

In the vast realm of plumbing, compression fittings stand tall as a beacon of simplicity and adaptability. By adhering to proper installation procedures and taking the necessary precautions, one can achieve a connection that is not only reliable but also resistant to the woes of leakage.

how to connect non threaded galvanized pipe to pex

Push Fittings

In the world of pipe connections, push fittings reign supreme. With their effortless installation and no need for fancy tools or soldering, it’s no wonder they’re a crowd favorite. Simply cut your pipe with precision, slide it into the fitting until that satisfying click, and ensure it’s fully inserted to avoid any pesky leaks.

But, like any great invention, push fittings have their limitations. They can be a tad pricier, making them less desirable for high-pressure situations. And once they’re in, there’s no going back – no reuse allowed.

However, when installed with finesse, these fittings offer a speedy and leak-proof solution for all your piping needs.

Did you know that PEX, which stands for cross-linked polyethylene, is a flexible and durable alternative to traditional galvanized pipes?


My name is Warren and I am a professional plumber licensed and insured in the State of California. I have been in the business for over 10 years and have undertaken small and large projects including bathroom renovation, toilets, garbage disposals, faucets, sinks and kitchen plumbing jobs. This site is based on my experience with toilets. I have installed the best brands and models in all sizes and shapes. I hope this helps you with the unbiased information that you need to make the right decision.


Sharkbite Fittings

Say Goodbye to Complicated Fittings: The Simplicity of Sharkbite Fittings When it comes to connecting galvanized pipe to PEX, there is one solution that stands above the rest – Sharkbite fittings. These remarkable fittings have revolutionized the connection process, making it quick and hassle-free. The true beauty of Sharkbite fittings lies in their simplicity.

Unlike traditional fittings that require complex techniques and specialized tools, Sharkbite fittings can be installed with just a simple push and twist. This means that anyone, regardless of their plumbing expertise, can effortlessly connect their galvanized pipe to PEX. Installing Sharkbite fittings is a breeze.

Just follow these easy steps: clean the pipe and fitting, mark the insertion depth on the pipe, slide the fitting onto the pipe, and secure the connection with the release tool. To ensure a leak-free connection, it is crucial to fully insert the pipe into the fitting and utilize the release tool when removing it. In conclusion, Sharkbite fittings offer a remarkable solution for connecting galvanized pipe to PEX.

With their user-friendly design , step-by-step instructions, and expert tips for a secure connection, you can tackle your plumbing project with confidence and enjoy the peace of mind that comes with a leak-free connection. Say farewell to complicated fittings and embrace the simplicity of Sharkbite fittings.

how to connect non threaded galvanized pipe to pex

Step 3: Preparing the Pipes

Preparing the Pipes To ensure a secure and leak-free connection between the galvanized pipe and the PEX pipe, proper preparation is key. Begin by thoroughly cleaning and sanding the pipe, both inside and out, using a wire brush to remove any debris or rust. Once the pipe is clean, it’s time to apply Teflon tape to the threaded end of the galvanized pipe.

This tape acts as a sealant, providing an extra layer of protection against leaks. Make sure to wrap the tape tightly in a clockwise direction for optimal results. Lastly, use a PEX crimping tool to firmly attach the PEX fitting to the pipe.

Slide the fitting onto the end of the pipe and utilize the crimping tool to compress the crimp ring securely onto the fitting. By diligently following these steps, you can rest assured knowing that your connection between the galvanized pipe and the PEX pipe is not only strong but also reliable , effectively preventing any potential plumbing mishaps or unwanted leaks.

Step 4: Connecting the Pipes

In the realm of joining non-threaded galvanized pipe to PEX, a multitude of options lie before you. Among them, soldering stands as a method involving the application of heat and solder to unite the pipes. Alternatively, a transition fitting can act as a bridge , linking the two pipes together.

Essential to success is the selection of the fitting type and adherence to meticulous instructions for a connection devoid of leaks. By assuming due caution and employing the correct technique, the connection between the pipes shall prove steadfast and enduring.

Fitting Types Comparison Tabelle

Fitting Type Description Advantages Disadvantages
Compression Fittings Compression fittings use a threaded nut and ferrule to create a tight seal between the galvanized pipe and PEX tubing. Easy to install, reusable, and provide a secure connection. Requires more effort and tools for installation compared to other fitting types.
Push Fittings Push fittings have a push-to-connect mechanism that allows for quick and simple installation without the need for any tools. Easy and fast installation, no special tools required, suitable for tight spaces. May not be as secure as compression fittings, not reusable.
Sharkbite Fittings Sharkbite fittings are a specific brand of push fittings known for their reliability and ease of use. Quick and tool-free installation, suitable for both professionals and DIYers, reliable performance. Slightly more expensive compared to other fitting types, not reusable.
Expansion Fittings Expansion fittings use an expansion tool to enlarge the PEX tubing, allowing it to slide over the galvanized pipe and create a secure connection. Provides a watertight seal, suitable for large diameter pipes, durable connection. Requires specialized tools and skills for installation, higher cost.

Step 5: Testing the Connection

Assessing the Connection A robust and enduring link between non-threaded galvanized pipe and PEX relies on thorough testing . This essential step allows for the early detection of weak spots and leaks, preventing them from developing into major concerns. To conduct a pressure test, acquire a pressure testing kit that contains a pressure gauge, hand pump, and adapters for various pipe sizes.

Begin by closing all valves and faucets connected to the system. Attach the pressure gauge and gradually inflate the system with air or water until you reach the desired pressure. Stay vigilant for sudden drops, as they may indicate a potential leak.

Thoroughly inspect the entire connection for any signs of leakage. Pay close attention to fittings, joints, and connections, checking for any water or air escaping. Promptly address any leaks by tightening fittings or replacing faulty components.

Consistent pressure testing and leak checks guarantee a secure and trustworthy connection, safeguarding against future water damage and plumbing complications.

how to connect non threaded galvanized pipe to pex

3/5 Tips for Making a Secure Connection

Creating a reliable and watertight connection between non-threaded galvanized pipe and PEX requires attention to detail. Begin by securing all fittings properly, ensuring a tight and leak-free connection. Enhance the security further by using a pipe thread sealant, guaranteeing a tight seal between the fittings.

To truly ensure the strength and durability of the connection, utilize a pressure testing kit . This invaluable tool allows you to pressurize the system and meticulously inspect for any potential leaks. By conducting this thorough examination, you can rest assured that your connection is not only secure but also reliable.

In conclusion, to achieve a leak-free and long-lasting connection between non-threaded galvanized pipe and PEX, remember to tighten all fittings, apply a pipe thread sealant, and consider utilizing a pressure testing kit. These essential steps will provide the peace of mind you seek.

By the way, if you’re interested in learning more about tapping into an existing sewer line, check out this helpful article on .

Step 1

Choosing the right fittings is crucial when connecting non-threaded galvanized pipe to PEX. These fittings are essential for a secure and leak-free connection that will stand the test of time. Galvanized pipes can corrode over time, so it’s important to select fittings that are compatible with both galvanized pipes and PEX to ensure a long-lasting connection.

There are different types of fittings available, such as compression fittings , push fittings, and Sharkbite fittings. Each type has its own advantages and disadvantages. Compression fittings provide a secure connection but may require more time for installation.

On the other hand, push fittings offer quick and easy installation but may not be as reliable in the long term . By conducting thorough research and considering these factors, you can choose the appropriate galvanized pipe fittings for your plumbing system. This will guarantee a secure and durable connection , minimizing the risk of leaks or any other issues that may arise.

how to connect non threaded galvanized pipe to pex

In this informative video, we will learn how to connect non-threaded galvanized pipes to PEX using various transition methods. Watch the complete guide by GOT2LEARN to discover the techniques for seamless integration with PEX, copper, polybutylene, and CPVC pipes. Master the art of transitioning for a reliable plumbing system.

YouTube video

Step 2

In the intricate world of plumbing, where pipes intertwine like veins, the connection between non-threaded galvanized pipes and PEX is a delicate dance. One must carefully consider the unique needs of their plumbing system, like a conductor composing a symphony. As you embark on this journey of connection, it is crucial to select fittings that align harmoniously with your system’s requirements.

But how does one navigate this vast sea of options? Research becomes your compass, guiding you towards the shores of knowledge. Delve deep into the advantages and disadvantages of different fittings, like an explorer unearthing hidden treasures.

Compression fittings, with their secure and leak-free embrace, beckon with promise. Yet, their installation demands utmost precision, like the delicate brushstrokes of a master painter. On the other hand, push fittings offer a simplicity that is both alluring and convenient.

Like a magician’s trick, they effortlessly slide into place, but beware, for not all situations are suited to their charm. And then, there are the renowned Sharkbite fittings, a name whispered with reverence in the plumbing world. With their swift and reliable nature, they present a tempting choice.

However, be prepared to pay a higher price for such reliability. But amidst this vast array of options, one must not forget the ancient law of compatibility. The chosen fittings must embrace both the galvanized pipes and the PEX with equal fervor.

For it is this harmony that will ensure a steadfast and unyielding connection within your plumbing system. By considering the unique needs of your plumbing system, diving deep into the ocean of fitting options, and ensuring compatibility with your chosen materials, you will emerge as a master conductor, orchestrating a symphony of connection. The final result?

A plumbing system that harmonizes with grace and reliability, leaving no room for leaks or doubts.

how to connect non threaded galvanized pipe to pex

Step 3

Achieving a flawless connection between a non-threaded galvanized pipe and PEX requires meticulous attention to detail. Begin by meticulously sanding the pipe, creating a surface so smooth that a tight seal becomes inevitable. Once this is accomplished, expertly apply Teflon tape, ensuring a snug fit around the threaded end to prevent any unwanted leaks.

Lastly, employ a PEX crimping tool, carefully adhering to the manufacturer’s instructions, to secure the PEX fitting onto the pipe. This trifecta of steps guarantees a connection that is not only seamless but also impervious to leaks, thus safeguarding the longevity and dependability of your plumbing system.

Step 4

Creating a seamless union between non-threaded galvanized pipe and PEX is easily achievable with the assistance of a transition coupling . Let me guide you through the process: Firstly, it is crucial to accurately trim both the galvanized pipe and PEX pipe to the appropriate lengths. This precision ensures a snug fit that will endure the test of time.

Next, take the time to meticulously cleanse the pipe ends, eliminating any particles or grime that could hinder a secure connection. This step cannot be underestimated, as cleanliness is the foundation of a successful joint. Now, carefully slide the transition coupling onto the galvanized pipe, ensuring a snug and secure fit.

This coupling acts as the bridge between the two different pipe materials, facilitating a harmonious fusion. With great care, insert the PEX pipe into the opposite end of the coupling. Apply gentle force to avoid any potential damage or distortion to the pipe.

This delicate maneuver will solidify the bond between the two components. To guarantee a leak-free connection, it is imperative to tighten all fittings and clamps diligently. Ensuring these elements are securely fastened will fortify the overall integrity of the connection.

For an added layer of security, contemplate utilizing pipe thread sealant. This precautionary measure will provide an extra safeguard against any potential complications that may arise in the future. By meticulously adhering to these steps and employing a transition coupling, you will foster a robust and trustworthy connection between non-threaded galvanized pipe and PEX.

This meticulous attention to detail will not only safeguard your plumbing system but also mitigate any potential issues that may arise down the line.

how to connect non threaded galvanized pipe to pex

Connecting Non-Threaded Galvanized Pipe to PEX: A Step-by-Step Guide

  1. Understand the connection between non-threaded galvanized pipe and PEX.
  2. Choose the right fittings for the connection.
  3. Prepare the non-threaded galvanized pipe and PEX pipes.
  4. Connect the non-threaded galvanized pipe and PEX pipes.
  5. Test the connection to ensure it is secure.
  6. Maintain the PEX and galvanized pipe connection by cleaning the galvanized steel pipes regularly.

Step 5

Safeguarding the non-threaded galvanized pipe and PEX connection requires diligent upkeep. Regular maintenance is essential to combat corrosion and uphold the connection’s integrity. Over time, corrosion can weaken the connection, leading to leaks or pipe failure.

To prevent such issues, conducting pressure tests on a regular basis is crucial. By identifying potential leaks or weak points in the connection early on, you can address them before they escalate into major problems. The frequency of pressure tests varies depending on factors such as pipe age, water quality, and overall plumbing condition.

As a general rule, it is advisable to conduct pressure tests at least once a year. This ensures that the connection remains secure and leak-free, promoting its longevity. In addition to pressure tests, it is vital to check for leaks immediately after connecting the pipes.

This can be easily done by visually inspecting for water leakage or employing specialized tools like a water pressure gauge or leak detection spray. By diligently maintaining your non-threaded galvanized pipe and PEX connection, conducting regular pressure tests , and promptly addressing any leaks, you can enjoy the long-term durability and reliability of your plumbing system.

how to connect non threaded galvanized pipe to pex

4/5 Final Thoughts

In the realm of intricate pipe connections, enlisting the expertise of a seasoned plumber is paramount. With their wealth of knowledge and experience, they adeptly navigate any hurdles and secure precise and secure connections. Regular inspections play a pivotal role in averting leaks and potential damages.

Staying abreast of plumbing codes and regulations is vital for optimal safety and functionality. By engaging a professional plumber, one not only saves time and money but also sidesteps unnecessary frustrations. Consistent inspections and staying informed about codes and regulations ensure seamless and efficient connections.


In conclusion, understanding how to connect non-threaded galvanized pipe to PEX is crucial for anyone working with plumbing systems . This article has provided a comprehensive guide, outlining the steps and tools needed to make a secure connection. By following these instructions, readers can confidently connect these two types of pipes and ensure a reliable plumbing system.

Additionally, the tips provided for maintaining the PEX and galvanized pipe connection will help prolong the lifespan of the pipes. Overall, this article has successfully addressed the search intent of the keyword, providing valuable information and guidance. For more articles on plumbing techniques and maintenance, we recommend exploring our other resources in the plumbing category.

If you’re wondering how to connect galvanized pipes without threads, check out our article “How to Connect Galvanized Pipe Without Threads” for step-by-step instructions and tips to help you get the job done.


How do you connect galvanized pipe without threads to PEX?

To connect galvanized pipes without threads to PEX, you can follow these steps. Firstly, if you have a 1/2″ galvanized pipe, you will need a PEX fitting designed for 3/4″ copper pipes. The reason for this is that the outer diameter of 3/4″ copper is closer to the outer diameter of 1/2″ galvanized pipe. Next, solder a short stub into the PEX fitting. Finally, use a tight-fitting reinforced rubber hose and secure it with two hose clamps on each end. This method provides a reliable connection between galvanized pipes and PEX tubing.

Can you run PEX through galvanized pipe?

To connect galvanized pipe/fitting to PEX tubing, you can use a threaded transition fitting. It’s important to note that depending on the type of PEX fittings being used, a dielectric union may be required. Once you have the transition fitting in place, connect the PEX tubing to the fitting using a compatible method.

What can connect to galvanized pipe?

When connecting galvanized pipes that are not pre-threaded, it is important to use a galvanized iron coupling to ensure a secure and leak-free joint. This coupling is specifically designed to create a tight seal and prevent any potential damage or leaks. It is especially crucial because galvanized pipes often have rough edges due to the zinc coating, which can compromise the integrity of the connection. Using the correct coupling will help you avoid any issues and ensure a reliable and durable connection between the pipes.

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