Should I Remove the SharkBite Plastic Insert When Connecting to Copper Pipes?
Understanding the Purpose of the SharkBite Plastic Insert
The plastic insert found inside SharkBite fittings serves a critical role in ensuring a reliable and leak-free connection, especially when used with copper pipe. It is designed to:
- Maintain pipe shape: The insert prevents the copper pipe from being compressed or deformed when the fitting is installed.
- Provide a smooth surface: It offers a smooth internal surface for the O-ring to seal against, enhancing the watertight seal.
- Protect the O-ring: The insert prevents direct metal-to-metal contact, which could damage the sealing O-ring and cause leaks.
Removing the plastic insert can compromise these functions, leading to potential issues in the plumbing system.
Should You Remove the Plastic Insert for Copper Pipes?
When using SharkBite fittings with copper pipes, the general recommendation is not to remove the plastic insert. Here’s why:
| Aspect | With Insert | Without Insert |
|---|---|---|
| Pipe deformation | Prevented by insert | Possible deformation |
| O-ring protection | Adequate protection | Increased risk of damage |
| Seal reliability | High, due to proper alignment | Reduced, potential leaks |
| Installation ease | Easier, insert guides pipe | More difficult, increased friction |
| Compliance with standards | Meets manufacturer specifications | Non-compliant, may void warranty |
Removing the insert may be considered in rare cases, such as when the pipe is exceptionally thick-walled or non-standard in dimension, but this is generally not recommended and should be confirmed with manufacturer guidelines.
Potential Risks of Removing the Plastic Insert
- Leaks and Failures: Without the insert, the O-ring may not seat correctly, leading to leaks.
- Pipe Damage: The copper pipe could be crushed or deformed under the fitting’s compression ring.
- Warranty Voidance: SharkBite and similar push-to-connect manufacturers typically void warranties if the fitting is modified.
- Non-Code Compliance: Local plumbing codes may require installation as per manufacturer instructions, which include leaving the insert in place.
Best Practices for Installing SharkBite Fittings on Copper Pipe
To ensure a secure and lasting connection, follow these expert recommendations:
- Cut pipe squarely: Use a proper tubing cutter to ensure a clean, perpendicular cut.
- Deburr and clean pipe ends: Remove any burrs or rough edges and clean the pipe thoroughly to prevent damage to the O-ring.
- Leave the plastic insert in place: Do not remove the insert, as it is integral to the fitting’s function.
- Push pipe fully into fitting: Ensure the pipe is inserted all the way until it contacts the internal stop.
- Check for leaks after installation: Pressurize the system and inspect all connections.
When Might Removing the Insert Be Appropriate?
While generally discouraged, some plumbers may remove the plastic insert under the following circumstances:
- Non-copper pipes: Certain plastic or PEX pipes may require insert removal, but always verify with the fitting’s instructions.
- Custom or non-standard applications: Specialized setups where the insert causes interference.
- Manufacturer approval: If explicitly stated by the SharkBite manufacturer or technical support for a specific scenario.
In all cases, consult the SharkBite installation manual or technical support before removing the plastic insert.
Summary Table: Key Considerations for Plastic Insert Removal
| Consideration | Remove Insert | Keep Insert |
|---|---|---|
| Seal Integrity | Compromised | Optimal |
| Pipe Protection | Reduced | Maintained |
| Warranty Status | Usually voided | Maintained |
| Installation Difficulty | Higher risk of error | Standard and straightforward |
| Code Compliance | Potentially non-compliant | Compliant with manufacturer instructions |
Expert Perspectives on Removing Sharkbite Plastic Inserts for Copper Pipes
Michael Trent (Master Plumber and Certified Plumbing Instructor). The plastic insert inside Sharkbite fittings is designed to support the copper pipe and prevent deformation when the fitting is installed. Removing the insert is not recommended, as it compromises the integrity of the connection and can lead to leaks or failure. For copper pipes, the insert ensures a secure, watertight seal and prolongs the lifespan of the joint.
Dr. Emily Harper (Materials Engineer specializing in Plumbing Systems). The plastic insert in Sharkbite fittings acts as a stabilizer that maintains pipe shape under compression. Removing it from copper pipes can cause uneven pressure distribution and potential damage to the pipe wall. From a materials perspective, retaining the insert is critical to preserving the mechanical performance and reliability of the connection.
Jason Lee (Technical Consultant, Plumbing Product Manufacturer). In my experience, the Sharkbite plastic insert should never be removed when working with copper pipes. The insert is integral to the fitting’s design, preventing the copper from collapsing under the compression ring. Removing it voids manufacturer warranties and increases the risk of joint failure, which can result in costly repairs and water damage.
Frequently Asked Questions (FAQs)
Should I remove the plastic insert from a SharkBite fitting when connecting to copper pipe?
No, the plastic insert should not be removed. It is designed to support the copper pipe inside the fitting and ensure a secure, leak-free connection.
What is the purpose of the plastic insert in SharkBite fittings for copper pipes?
The plastic insert acts as a liner that prevents the copper pipe from deforming when the fitting is pushed on, maintaining the integrity of the seal.
Can removing the plastic insert from a SharkBite fitting cause leaks?
Yes, removing the insert can compromise the seal and lead to leaks because the copper pipe may not be properly supported inside the fitting.
Is the plastic insert reusable if I disconnect and reconnect the SharkBite fitting?
The insert is generally reusable as long as it remains intact and undamaged during disconnection and reconnection.
Are SharkBite fittings compatible with copper pipes without the plastic insert?
No, SharkBite fittings require the plastic insert to function correctly with copper pipes; omitting it can result in improper fitting and potential failure.
How do I ensure a proper connection when using SharkBite fittings on copper pipes?
Make sure the copper pipe is clean, cut squarely, and fully inserted into the fitting over the plastic insert until it reaches the internal stop for a secure and reliable connection.
When working with SharkBite fittings on copper pipes, it is important to understand the role of the plastic insert. The plastic insert is designed to support the copper pipe internally, preventing it from collapsing or deforming when the fitting’s metal teeth grip the pipe. Removing this insert can compromise the integrity of the connection, potentially leading to leaks or failure over time.
Manufacturers generally recommend leaving the plastic insert in place when installing SharkBite fittings on copper pipes. The insert ensures a secure, watertight seal and maintains the pipe’s shape, which is critical for the fitting’s performance. Removing it is neither necessary nor advisable unless specified by a particular application or product guideline.
In summary, for standard copper pipe installations using SharkBite fittings, the plastic insert should remain intact to ensure optimal connection strength and reliability. Understanding this detail helps maintain plumbing system integrity and prevents costly repairs or maintenance issues down the line.
Author Profile
- Phylis Gregory is a seasoned mold maker with hands on experience shaping and testing plastic materials. Through Plaaastic, he shares clear, practical insights to help everyday people understand plastic’s behavior, safety, and reuse without guilt or confusion. His workshop background brings grounded, real world knowledge to every topic covered.