PEX piping is a popular choice for home plumbing thanks to its flexibility, affordability, and longevity. But when it comes to installing PEX pipes, how do you know when to go with PEX crimp or PEX clamp connections? It can be a bit overwhelming. Knowing the differences between these two methods can simplify the decision-making process.
Understanding PEX Connections
PEX, which stands for cross-linked polyethylene, is a type of plastic piping favored for water supply lines due to its straightforward installation and resistance to scale and chlorine. Selecting the right connections helps make secure and leak-proof plumbing systems.
Both PEX crimp and PEX clamp connections are commonly used for attaching PEX pipes to fittings. Each method has its own set of pros and cons:
What is PEX Crimp?
The PEX crimp method involves using a copper ring that is placed over the PEX tubing and fitting. A crimping tool is then used to compress the ring, securing the tubing to the fitting.
Benefits
Reliability:
PEX crimp connections are known for their dependability. Once crimped, they create a tight seal that is unlikely to leak.
Affordability:
The tools and rings needed for crimp connections are generally more budget-friendly compared to those for clamp connections.
Drawbacks
Tool Calibration:
The crimping tool has to be accurately calibrated to check for a secure connection. If the tool isn’t calibrated correctly, it can lead to leaks.
Space Requirements:
Crimping requires enough space to maneuver, which can be tricky in tight spots.
How to Make PEX Crimp Connections
To create a PEX crimp connection, first slide a copper crimp ring onto the end of the PEX tubing. Then, insert the PEX pipe into the fitting until it reaches the shoulder. Position the crimp ring about 1/4 inch from the end of the tubing, and use a crimping tool to compress the ring. After crimping, visually inspect the connection to verify a proper fit and check for any signs of leaks after pressurizing the system.
What is PEX Clamp?
The PEX clamp method uses a stainless steel clamp ring and a clamp tool to secure the PEX pipe to a fitting. The tool tightens the clamp, forming a secure connection.
Benefits
Ease of Use:
PEX clamps are generally easier to install, especially in tight spaces, thanks to the design of the clamp tool.
Versatility:
The same tool can accommodate different pipe sizes, making it more versatile than crimp tools, which often require various jaw sizes.
Durability:
Stainless steel clamps are resistant to corrosion, which can improve durability in certain environments.
Drawbacks
Cost:
Clamp tools and clamps usually come at a higher price than crimp tools and rings.
How to Make PEX Clamp Connections
To create a PEX clamp connection, slide a stainless steel clamp ring over the end of the PEX tubing. Insert the tubing into the fitting, ensuring it is fully seated. Then, use a clamp tool to tighten the clamp until it is snug. Be careful not to overtighten, as this can damage the tubing or fitting. After securing, visually inspect the connection and perform a pressure test to check for any leaks.
Direct Burial of PEX Tubing
Direct burial typically occurs when PEX tubing is run underground, minimizing exposure to damage and harsh environments.
Guidelines for Direct Burial of PEX Tubing
Depth of Burial:
Proper burial depth is important to prevent damage from freezing or surface activities.
Protective Measures:
Protective materials should be used where necessary to shield the tubing from rocks or sharp objects.
Compliance:
Follow all local building codes and guidelines regarding depth and protective equipment during burial.
Comparing Crimp and Clamp for Direct Burial Applications
Both crimp and clamp methods can be used in direct burial applications, but clamps may have advantages in certain environments due to their corrosion resistance and ease of installation in confined spaces.
PEX Crimp vs PEX Clamp: Which Should You Choose?
Factors to Consider
When choosing between PEX crimp and PEX clamp, consider:
Project Scope:
For larger projects that require many connections, the cost differences can be significant. Crimping tools and rings are usually more economical for high volumes.
Installation Environment:
The available space for work should be taken into account. In tight areas, clamps might be easier to handle.
Tool Versatility:
If you’re working with various pipe sizes, a clamp tool may provide more versatility since it often accommodates different sizes without needing additional parts.
Practical Application
For DIY-ers, PEX crimping may be more cost-effective and easier to find locally. However, if you’re working in cramped spaces, the clamp method could save you time and hassle.
For trades professionals and contractors, the choice may depend on the specific requirements of each project and client preferences. Both methods are effective, but understanding their differences can help provide better service and recommendations.
