QuesHub > PEX > copper > PEX > ASK DETAIL

Can PEX be attached to copper?

Ethan Ramirez | 2023-06-15 08:00:34 | page views:1171
I'll answer
Earn 20 gold coins for an accepted answer.20 Earn 20 gold coins for an accepted answer.
40more

Alexander Davis

Works at Apple, Lives in Cupertino, CA
As an expert in the field of plumbing and pipe fitting, I often get asked about the compatibility of different materials. When it comes to connecting PEX (Cross-Linked Polyethylene) to copper pipes, there are several considerations to keep in mind.

PEX, a flexible plastic tubing, has become increasingly popular due to its ease of installation, durability, and resistance to corrosion. On the other hand, copper is a traditional material known for its longevity and heat conductivity. Both materials have their own set of advantages and are widely used in the plumbing industry.

### Push-Fit Fittings

One of the methods to connect PEX to copper, as mentioned in your reference, is through the use of push-fit fittings. These are designed with metal tines that grip the tubing tightly against an O-ring seal. This creates a watertight seal without the need for soldering or special tools. The key to a successful connection is ensuring that the fitting is the correct size for the tubing's outside diameter.

### Clamp-Ring Connections

Another method is the clamp-ring connection. This involves using a special clamp ring that secures the PEX tubing to the existing metal pipe, such as copper. The clamp ring is tightened to create a seal, and it's important to follow the manufacturer's instructions to ensure a proper fit and avoid leaks.

### Compatibility and Considerations

When connecting PEX to copper, it's crucial to consider the following:


1. Material Compatibility: PEX and copper can be connected, but the transition must be done with the appropriate fittings to ensure a leak-free connection.

2. Thermal Expansion: PEX and copper have different rates of thermal expansion. This can lead to stress on the fittings if not managed correctly. It's essential to use expansion loops or other methods to accommodate these differences.

3. Pressure Ratings: Ensure that the fittings and connections can handle the pressure of the system they are being used in.

4. Temperature Range: Both materials have specific temperature ranges in which they perform optimally. Exceeding these can lead to premature failure.

5. Corrosion Resistance: Copper is susceptible to corrosion in certain environments, which can affect the longevity of the connection. Proper corrosion protection measures should be taken.

### Professional Installation

While it's technically possible for a DIY enthusiast to connect PEX to copper, it's highly recommended to have a professional plumber perform the task. Professionals have the experience and tools to ensure that the connection is done correctly and will be able to identify and address any potential issues.

### Maintenance and Inspection

Regular maintenance and inspection of the connections are also important to ensure the longevity of the plumbing system. This includes checking for signs of leaks, corrosion, and wear.

In conclusion, connecting PEX to copper is feasible with the right fittings and techniques. It requires careful consideration of material properties, system requirements, and proper installation practices. Always consult with a professional when in doubt to ensure the safety and reliability of your plumbing system.


2024-05-12 08:32:22

Isabella Patel

Studied at the University of Melbourne, Lives in Melbourne, Australia.
A push-fit fitting uses metal tines to hold the tubing, in this case PEX and copper, against an O-ring seal. The fittings are sized by the tubing's outside diameter. A clamp-ring connection connects PEX to existing metal pipe.Mar 26, 2009
2023-06-25 08:00:34

Emily Campbell

QuesHub.com delivers expert answers and knowledge to you.
A push-fit fitting uses metal tines to hold the tubing, in this case PEX and copper, against an O-ring seal. The fittings are sized by the tubing's outside diameter. A clamp-ring connection connects PEX to existing metal pipe.Mar 26, 2009
ask:3,asku:1,askr:137,askz:21,askd:152,RedisW:0askR:3,askD:0 mz:hit,askU:0,askT:0askA:4