How to join multiple 50mm PEX pipes together?

As a reliable supplier of 50mm PEX pipes, I often get asked about the best ways to join multiple 50mm PEX pipes together. Joining PEX pipes correctly is crucial for ensuring a leak - free and long - lasting plumbing system. In this blog, I'll share several effective methods and provide some practical tips to help you with your PEX pipe connection projects.

Understanding PEX Pipes

Before diving into the joining methods, it's important to understand what PEX pipes are. PEX, or cross - linked polyethylene, is a flexible plastic tubing that has gained popularity in plumbing applications due to its durability, resistance to corrosion, and ease of installation. Our 50mm PEX pipes are suitable for a variety of applications, such as PEX Pipe for Floor Heating, large - scale water distribution systems, and industrial fluid transfer.

There are different types of PEX pipes, with PE - Xa Pipe ISO15875 being one of the most common and high - quality options. PE - Xa pipes are produced using the peroxide method of cross - linking, which results in a highly uniform and strong molecular structure.

Methods of Joining 50mm PEX Pipes

1. Compression Fittings

Compression fittings are a popular choice for joining PEX pipes. They are relatively easy to install and do not require any special tools other than a pipe cutter and a compression wrench.

• Materials Needed: Compression fittings (including compression nuts, ferrules, and male or female adapters), a pipe cutter, and a compression wrench.
• Installation Steps:
  • First, use a pipe cutter to cut the PEX pipe cleanly and straight at the desired length. Make sure the cut end is smooth and free of burrs.
  • Slide the compression nut onto the PEX pipe, followed by the ferrule.
  • Insert the pipe into the fitting body until it reaches the stop.
  • Tighten the compression nut onto the fitting body using a compression wrench. Make sure to tighten it evenly to avoid leaks.

Compression fittings are suitable for both permanent and temporary connections and can be easily disassembled if needed for maintenance or modification.

2. Crimp Fittings

Crimp fittings are another widely used method for joining PEX pipes. They provide a secure and permanent connection.

• Materials Needed: Crimp fittings (such as crimp rings and crimp connectors), a PEX pipe cutter, and a crimping tool.
• Installation Steps:
  • Cut the PEX pipe to the appropriate length with a pipe cutter.
  • Slide a crimp ring onto the PEX pipe.
  • Insert the pipe into the crimp connector until it reaches the shoulder.
  • Position the crimping tool around the crimp ring and squeeze the handles firmly until the ring is compressed evenly around the pipe and the connector.
  • Check the crimped connection to ensure that the ring is properly compressed and there are no gaps.

It's important to use the correct size of crimp rings and connectors for 50mm PEX pipes to ensure a proper fit and a leak - free connection.

3. Push - to - Connect Fittings

Push - to - connect fittings are a convenient option for joining PEX pipes, especially for DIY projects. They are quick and easy to install without the need for special tools.

• Materials Needed: Push - to - connect fittings, a PEX pipe cutter.
• Installation Steps:
  • Cut the PEX pipe to the desired length.
  • Clean the end of the pipe to remove any dirt or debris.
  • Insert the pipe into the push - to - connect fitting until it reaches the stop. You should feel a slight click, indicating that the connection is secure.

Push - to - connect fittings use a series of internal O - rings and teeth to create a watertight seal. However, they may not be suitable for high - pressure or high - temperature applications.

4. Solvent Welding (Not for All PEX Types)

While solvent welding is commonly used for joining PVC pipes, it is not applicable to all types of PEX pipes. Some special PEX pipes with compatible solvents can be joined using this method.

• Materials Needed: Solvent cement, a PEX pipe cutter, and sandpaper.
• Installation Steps:
  • Cut the PEX pipe to the appropriate length.
  • Use sandpaper to lightly sand the ends of the pipes to be joined to create a rough surface for better adhesion.
  • Apply a thin layer of solvent cement to both the pipe end and the fitting socket.
  • Quickly insert the pipe into the fitting and hold it in place for a few seconds to allow the solvent to bond the two pieces together.

It's important to note that solvent welding should only be used on PEX pipes that are specifically designed for this type of connection.

Using Fittings for Complex Connections

In addition to the basic joining methods, fittings such as tees, elbows, and couplings can be used to create more complex plumbing systems. For example, PPSU Tee is a great option for creating branch connections in a PEX pipe system.

When using fittings, make sure to choose the correct size and type for your 50mm PEX pipes. The fittings should be made of high - quality materials that are compatible with PEX pipes to ensure a long - lasting and reliable connection.

Tips for Successful Joining

• Pipe Preparation: Always cut the PEX pipe cleanly and straight using a sharp pipe cutter. Remove any burrs or rough edges from the cut end to ensure a proper fit with the fittings.
• Size Compatibility: Make sure that all the fittings and pipes are of the correct size. Using incorrect sizes can lead to leaks and other issues.
• Follow Manufacturer's Instructions: Each type of fitting and joining method may have specific installation instructions provided by the manufacturer. Follow these instructions carefully to ensure a proper and safe connection.
• Pressure Testing: After joining the PEX pipes, it's a good idea to perform a pressure test to check for any leaks. This can help you identify and fix any problems before the system is put into use.

Contact Us for Your PEX Pipe Needs

If you are planning a project that requires joining multiple 50mm PEX pipes, we are here to help. As a leading supplier of PEX pipes, we offer a wide range of high - quality 50mm PEX pipes, fittings, and accessories. Whether you need PE - Xa Pipe ISO15875 for a floor heating system or PPSU Tee for a complex plumbing layout, we have the products you need.

Contact us today to discuss your requirements and get a quote. Our team of experts is ready to assist you with any questions you may have about PEX pipe installation and joining. We look forward to working with you on your next project.

References

• "PEX Pipe Installation Guide", Plumbing Manufacturers International
• "Cross - Linked Polyethylene (PEX) Tubing for Water Distribution Systems", American Society of Plumbing Engineers