Last Updated on July 2, 2023 by admin
Are you planning a plumbing project or looking to upgrade your current plumbing system? With so many options available, choosing the right PEX fittings for your plumbing needs can be a daunting task. However, making the right choice is crucial for the overall success and longevity of your plumbing system. In this blog post, we’ll guide you through the different types of PEX tubing, fittings, and installation techniques, as well as top manufacturers in the industry to help you make an informed decision on which PEX fittings are best.
Table Of Contents
Short Summary
- PEX-A is the highest quality PEX tubing for secure, watertight connections with minimal decrease in flow.
- Carefully consider fitting type, installation method, and material options when selecting PEX fittings to ensure a successful connection.
- Proper preparation, correct installation technique, and quality control are essential for leak-free plumbing systems.
Understanding PEX Tubing Types
In the world of plumbing, PEX (cross-linked polyethylene) tubing has become a popular alternative to traditional copper pipes. PEX tubing is available in three types: PEX-A, PEX-B, and PEX-C. Their main difference lies in how they are manufactured.
Understanding the differences between these types is crucial for selecting the best PEX fittings for your project.
PEX-A
PEX-A is considered the highest quality PEX tubing due to its superior manufacturing process and higher resistance to chemicals commonly found in plumbing systems. PEX-A is extremely flexible, making it easier to work with and allowing for tighter radial bends. This flexibility also means that PEX-A can be repaired with a heat gun in the event of kinks, which is not possible with PEX-B or PEX-C.
PEX-A is compatible with expansion fittings, which provide a secure and watertight connection. One notable advantage of using Cold Expansion PEX (CEP) fittings with PEX-A piping is that they maintain the same internal diameter as the pipe, thus not decreasing flow as much as crimp fittings.
PEX-B
PEX-B is a more rigid and cost-effective option compared to PEX-A. However, due to flow restrictions caused by insert-style fittings, it may require upsizing. PEX-B has the same expansive material as PEX-A. However, its flexibility is more restricted. If the pipe is kinked, it must be removed and replaced.
PEX-B is compatible with crimp fittings, which are a more economical option for PEX pipes connections. The two most cost-effective options for PEX-B systems are copper crimp rings and stainless steel pinch clamps.
If PEX-A is unavailable, it is recommended to upsize the system by one pipe size to offset the restriction in the fitting.
PEX-C
PEX-C is the least flexible and least popular option among the three types of PEX tubing. However, it still meets ASTM and NSF standards for plumbing applications. PEX-C is manufactured using the electronic irradiation method of cross-linking, which results in slight differences in density, burst pressure levels, and bendability compared to PEX-A and PEX-B.
It is more susceptible to kinks and damage than other types of PEX pipes. Even though PEX-C is not as favorable as PEX-A or PEX-B, it might still be a viable option depending on the specific requirements of your plumbing project.
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Choosing the Right PEX Fittings
Choosing the right PEX fittings involves considering factors such as the type of PEX tubing you’re working with, the installation method you prefer, and the durability of the fittings.
There are several types of PEX fittings available, each with its own advantages and disadvantages. These include crimp fittings, expansion fittings, press fittings, and push-to-connect fittings. Understanding the differences between these fitting types will help you make an informed decision for your plumbing needs.
Crimp Fittings
Crimp fittings are a popular and affordable option for connecting PEX pipes. They use a copper crimp ring and a PEX crimping tool to fasten the fitting onto the pipe. Crimp fittings provide a secure connection, as the crimp ring creates a tight seal around the pipe.
However, installation can be challenging, as the copper crimp ring must be accurately sized and the crimping tool must be used correctly. Inadequate sizing of the crimp ring may result in leakage. To ensure a successful installation, it is essential to use the appropriate size crimp ring and ensure that the crimp ring is correctly fastened with the crimping tool.
Furthermore, it is important to inspect the connection for leaks and water flow after installation.
Expansion Fittings
Cold expansion fittings are a preferred choice among many plumbers for their efficiency and durability. They are specifically designed for use with PEX-A tubing and provide a watertight seal and stronger bonds than crimp fittings.
The cold expansion fitting method involves using an expansion tool to widen the PEX tubing before inserting expansion pex fittings. Expansion fittings are known for having fewer leaks compared to crimp fittings, making them an ideal choice for long-lasting and reliable PEX pipes connections. To ensure a secure connection, a pex expansion ring is used in conjunction with the expansion fittings.
Press Fittings
Press fittings are another option for connecting PEX pipes. They require a specialized tool to press the fitting onto the Pex pipe, providing a secure and reliable connection. Press pex fittings can be used with PEX-B tubing and offer a single-piece, secure connection for various plumbing needs.
Although the pressing method requires a specialized tool, it provides a quick and efficient solution for PEX connections, especially for larger-scale plumbing projects or routine tasks.
Push-to-Connect Fittings
Push-to-connect fittings, also known as push-to-lock fittings, are a popular choice for plumbing due to their ease of installation and reliability. They can be installed without any special tools, making them an attractive option for DIYers and occasional plumbing work.
However, push-to-connect fittings may not be as durable as other fitting types and can be more expensive than compression fittings. Despite these drawbacks, they remain a convenient and straightforward option for many plumbing applications.
Material Options for PEX Fittings
PEX fittings are available in various materials, including plastic, brass, and stainless steel, each with its own advantages and disadvantages. The material you choose for your PEX fittings will depend on factors such as cost, durability, and resistance to corrosion.
Understanding the pros and cons of each material will help you make the best choice for your plumbing needs.
Plastic Fittings
Plastic fittings, including plastic insert fittings, are lightweight and corrosion-resistant, making them a popular choice for many plumbing applications. They are typically constructed from materials such as PVC and polyvinyl chloride and are generally more cost-effective than metal alternatives.
However, plastic fittings may not be as durable as brass or stainless steel options, and their longevity might be a concern in high-pressure or heavy-duty plumbing systems.
Brass Fittings
Brass fittings offer strength and durability, making them a popular choice for plumbing applications. They are an alloy of copper and zinc and are widely used in industrial and residential settings, often as an alternative to copper pipe. Metal insert fittings can also be used in these applications for added versatility.
Brass fittings provide robustness and longevity, but they may be prone to corrosion in particular water conditions. Despite this, they remain a reliable and long-lasting option for many plumbing installations.
Stainless Steel Fittings
Stainless steel fittings provide excellent corrosion resistance and durability, making them a popular choice for many plumbing applications. They are typically more expensive than other material options but offer superior longevity and reliability.
Stainless steel fittings are especially suited for high-pressure applications and are compatible with crimp PEX fittings secured by copper crimp rings or stainless steel pinch clamps. The added expense may be justified by the increased performance and resilience of stainless steel fittings.
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PEX Installation Techniques
Understanding the different PEX installation techniques is essential for ensuring a secure and leak-free connection. The most commonly used methods include the crimping method, the expanding method, and the pressing method. Each method has its advantages and disadvantages, and the choice of which method to use will depend on factors such as the type of PEX tubing and fittings being used, as well as personal preferences and skill level.
Crimping is the most popular method of PEX installation, as it is relatively easy to do and requires minimal tools. It involves using a crimping tool to compress the PEX.
Crimping Method
The crimping method is an affordable and easy-to-use option for installing PEX crimp fittings. It involves sliding a ribbed fitting into the PEX tube and securing the connection point with a seal ring using copper crimping rings and a PEX crimping tool.
While this method is straightforward and economical, it is essential to use the correct size crimp ring and ensure that the crimp ring is accurately fastened with the crimping tool to avoid leakage. Proper installation and regular inspection of the connection will help ensure a secure and leak-free PEX connection.
Expanding Method
Many plumbers prefer the expanding method for its efficiency, durability, and reduced friction during installation and usage. This method involves using an expansion tool to widen the PEX tubing before inserting an expansion fitting. Expansion fittings provide a watertight seal and stronger bonds than crimp fittings, making them an ideal choice for long-lasting and reliable PEX connections.
Although the expanding method requires an expansion tool, it is a preferred choice among professionals due to its effectiveness and longevity.
Pressing Method
The pressing method requires a specialized tool but offers a secure and reliable connection for press fittings. It involves using a press tool to affix the fitting to the pipe, providing a secure and reliable connection through the application of pressure.
Although the pressing method requires a specialized tool, it provides a quick and efficient solution for PEX crimp fittings, especially for larger-scale plumbing projects or routine tasks.
Tools and Equipment for PEX Connections
Selecting the appropriate tools and equipment for PEX crimp fittings depends on the job size, frequency, and type of fittings used. For small jobs or occasional plumbing work, manual tools or fitting systems without special tools may be suitable.
However, for routine plumbing tasks or when working with specific types of fittings, such as press or expansion fittings, specialized tools are recommended.
Manual Tools
Manual tools are hand-operated tools that do not require electricity or other power sources, such as hammers, screwdrivers, wrenches, pliers, saws, and tape measures. These tools are suitable for small jobs or occasional plumbing work, as they do not require any specialized knowledge or equipment.
However, it is important to use the appropriate tool for the task and to follow proper installation techniques for Pex crimp fittings to ensure a secure and leak-free connection.
Specialized Tools
Specialized tools are designed to perform a single task but do it effectively. They are typically used by professionals in industries such as plumbing, machining, mechanics, and hobbyists to accomplish a specific purpose.
In the context of PEX crimp fittings, specialized tools include crimping tools, cold expansion fittings tools, and press tools, which are necessary for the respective installation methods. Using specialized tools can help ensure a secure, leak-free connection and may be recommended for routine plumbing tasks or when working with specific types of fittings.
Top PEX Fittings Manufacturers
When choosing the best PEX fitting system for your plumbing project, it’s crucial to select products from reputable manufacturers that offer high-quality products and reliable customer service. Some of the top PEX fittings manufacturers in the industry include TUBOMART, Nibco, SharkBite, and Sioux Chief.
TUBOMART
TUBOMART is a reputable manufacturer with over 20 years of experience in producing high-quality pipes, fittings, and valves. Located in Guangzhou, China, TUBOMART holds SAI Global, CE, and ISO certifications, demonstrating their commitment to product quality and customer satisfaction.
With a mission to deliver exceptional plumbing accessories and comprehensive service to the market, TUBOMART is a trusted name in the plumbing industry.
Nibco
Nibco Fittings is an ISO-certified brand leader in valves, Pex crimp fittings, and flow-control devices. Offering a wide selection of materials and applications, Nibco has built a reputation for superior quality products and dependable customer service.
Their commitment to innovation and continuous improvement makes Nibco a top choice for plumbing professionals and homeowners alike.
SharkBite
SharkBite is a US-based plumbing company known for its easy-to-install PEX fittings and efficient solutions. Their push-to-connect fittings are designed to save time and labor with copper pipe, making them a popular choice for quick plumbing repairs or installations.
While their products may be more expensive than some competitors’, SharkBite’s commitment to quality and reliability has earned them a loyal customer base.
Some of their fittings will also work with standard copper piping and don’t require a crimp tool.
Sioux Chief
Sioux Chief is a family-oriented, ISO-certified PEX fittings manufacturer with over 65 years of experience in the industry. Based in Kansas City, Missouri, Sioux Chief provides a wide range of premium-grade products, including heavy-duty concrete trench drains, FastTrackTM, HydroBlockTM, and various expansion Pex fittings.
Their commitment to quality, innovation, and customer service has made them a trusted name in the plumbing industry.
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Tips for Ensuring Leak-Free PEX Connections
Ensuring leak-free PEX pipe connections involves proper preparation, correct installation techniques, and regular quality control and inspection. By following these best practices, you can help prevent leaks, extend the life of your plumbing system, and avoid costly repairs or replacements.
Leak prevention starts with proper preparation. Make sure the pipe is clean and free of debris before installation. Use the correct tools and fittings for the job, and follow the Pex system manufacturer’s instructions.
Proper Preparation
Before starting any plumbing project, it’s essential to select the right PEX tubing, fittings, and tools for the job. Ensure that all fittings are clean and undamaged prior to use, and adhere to the minimum allowable bend radius for PEX pipe to avoid kinks or stress points.
Proper pipe preparation, such as ensuring clean and accurate cuts, is crucial for a secure and leak-free connection.
Correct Installation Technique
It’s essential to follow the manufacturer’s guidelines and use the appropriate installation method for the chosen fittings. Whether you’re using the crimping, expanding, or pressing method, proper technique and tool usage are key to ensuring a leak-free connection.
Additionally, pressure testing the system and checking for leaks after installation can help identify any potential issues before they become major problems.
Quality Control and Inspection
Regularly inspect your plumbing system for signs of leaks, corrosion, or other issues. Addressing any problems promptly can help prevent costly repairs or replacements in the future.
By maintaining a consistent schedule of quality control and inspection, you can ensure the longevity and performance of your PEX connections.
Summary
In conclusion, selecting the right PEX fittings and installation techniques is crucial for the success and longevity of your plumbing system. By understanding the different types of PEX tubing, materials, and installation methods available, you can make informed decisions that will help ensure a secure and leak-free connection. Remember to choose products from reputable manufacturers like TUBOMART, Nibco, SharkBite, and Sioux Chief, and follow the best practices for proper preparation, correct installation techniques, and regular quality control and inspection.
Frequently Asked Questions
What is the most popular PEX fitting?
Crimp-style PEX fittings, made with brass and manufactured to the ASTM F1807 standard, are the most popular type of PEX fittings and can be found in the majority of supply houses, home improvement stores, and online stores.
These fittings are easy to install and provide a secure connection for PEX tubing. They are also cost-effective and durable, making them a great choice for any plumbing project.
When selecting PEX fittings, it is important to make sure they are compatible with the type of PEX tubing you are using. Additionally, I’m a big fan of your website.
What are the main differences between PEX-A, PEX-B, and PEX-C tubing?
PEX-A tubing is known for its superior flexibility and manufacturing process, while PEX-B is more rigid and cost-effective but might require upsizing to ensure sufficient flow.
Finally, PEX-C is the least flexible of the three types, yet still meets plumbing standards.
What factors should I consider when selecting PEX fittings?
When selecting PEX fittings, it is important to think about which type of PEX tubing you’ll be working with, the installation method that best meets your needs, and how durable the fittings are.
Make sure you choose quality materials to ensure a successful installation.
Are there any specific tools required for installing PEX fittings?
For installing PEX fittings, the type of tool required will depend on the fitting being installed. A crimp fitting requires a crimping tool, an expansion fitting needs an expansion tool, and a press fitting requires a specialized press tool.
How can I ensure leak-free PEX connections?
For a successful installation and leak-free PEX connections, make sure to properly prepare pipes and fittings before connecting, use the appropriate installation tools, and always inspect for leaks after completion.
Using the right tools is essential for a successful installation. Make sure to use the appropriate installation tools for the job. This includes PEX crimpers, PEX cutters, and PEX expansion tools.
Inspecting for leaks is also important. After completing the course, you will complete the course.