1. Product Overview
The SharkBite Max 1/2 Inch Polybutylene Transition Coupling is a brass push-to-connect fitting designed to simplify plumbing projects. It allows for easy transitions from polybutylene pipe to various other pipe types, including PEX, copper, CPVC, PE-RT, and SDR-9 HDPE.
This coupling is constructed from durable DZR brass with stainless-steel color-coordinated collars, ensuring a strong and reliable connection. It is engineered for reduced insertion force, making installation quicker and more efficient without the need for soldering, glue, or specialized tools.

Image: SharkBite Max 1/2 Inch Polybutylene Transition Coupling, illustrating its function to connect 1/2 inch Polybutylene (PB) to 1/2 inch Copper Tube Size (CTS) pipes. The image highlights the 'Look for the Shark' logo on the fitting.
Key Features:
- Fast and Easy Installation: Push-to-connect design eliminates the need for soldering, glue, or additional tools. Can be installed in wet lines.
- No PEX Tube Liner Required: Eliminates flow restriction when used on Copper/CPVC pipes.
- Strong and Durable: Made of high-quality forged DZR brass with reinforced stainless steel collars for enhanced strength and a 50% reduction in insertion force.
- Lead-Free: Complies with lead-free standards for commercial and residential plumbing applications.
- Versatile Compatibility: Connects polybutylene pipe to PEX, copper, CPVC, PE-RT, and SDR-9 HDPE pipes.

Image: Infographic detailing the SharkBite Max coupling's performance, including 2X burst pressure (rated to 400 PSI) and 1/2 the insertion effort. It also notes no special tools, crimping, soldering, or glue are required, and it's approved for behind-the-wall applications without access panels.

Image: Detailed cutaway diagram of the SharkBite Max coupling, labeling its components: Stainless Steel Collar, DZR Brass Body, EPDM Rubber O-Ring, Release Collar, and Stainless Steel Teeth. Each component's function is briefly described.
2. Installation Instructions
Follow these steps for proper installation of your SharkBite Max Polybutylene Transition Coupling. Always ensure the water supply is shut off before beginning any plumbing work.
2.1 Preparation
- Shut Off Water Supply: Locate and turn off the main water supply to the area where you will be working. This is typically found in a basement, crawl space, near a hot water heater, or in an outdoor shut-off valve box.
- Relieve Line Pressure: Open a nearby faucet to drain any remaining water and relieve pressure in the lines.
- Cut Pipe: Cut the pipe squarely using appropriate pipe cutters. Ensure the cut is clean and free of burrs or debris.
- Deburr Pipe: If using copper pipe, deburr the pipe using emery cloth and a deburr tool to ensure a smooth surface for connection.
- Mark Insertion Depth: Use a SharkBite depth and deburr tool to mark the correct insertion depth on the pipe. This ensures the pipe is fully seated within the fitting for a secure connection.
2.2 Connecting the Coupling
- Insert Pipe: Push the prepared pipe into the SharkBite Max coupling up to the marked insertion depth. A slight twisting motion may assist in seating the pipe fully.
- Verify Connection: Ensure the pipe is fully inserted and the connection feels secure.
- Repeat for Second Pipe: Connect the second pipe type (PEX, copper, CPVC, PE-RT, or SDR-9 HDPE) to the other end of the transition coupling, following the same steps for cutting, deburring (if applicable), marking, and inserting.

Image: A visual step-by-step guide for installing SharkBite Max fittings, showing how to measure, cut, push the pipe into the fitting, and the completed connection. It also mentions using a disconnect clip for removal.
2.3 Post-Installation
- Restore Water Supply: Once all connections are made, slowly turn on the water supply.
- Check for Leaks: Carefully inspect all new connections for any signs of leaks.
2.4 Important Considerations
- Underground/Behind-the-Wall Applications: For underground installations or behind-the-wall applications without access panels, wrapping the fitting with SharkBite silicone self-adhesive tape is required.
- HDPE Pipe: An HDPE pipe stiffening insert is required when connecting to HDPE pipe.

Image: A collection of SharkBite PEX tools and accessories, including a Pro Disconnect Tong, Disconnect Tongs, Depth & Deburr Tool, Pro PEX Cutter, and Disconnect Clips, all essential for professional plumbing installations.
3. Official Installation Videos
3.1 How to Install SharkBite Max Push-to-Connect Fittings
Video: This official SharkBite video provides a detailed guide on how to install SharkBite Max push-to-connect fittings, demonstrating the process for various pipe types and highlighting key steps for a secure connection.
3.2 How to Repair Polybutylene
Video: An instructional video from SharkBite demonstrating the process of repairing polybutylene pipes using SharkBite Max transition couplings, showcasing practical application in a crawl space environment.
4. Specifications
| Attribute | Value |
|---|---|
| Size | 1/2 in., Pack of 6 |
| Material | Brass |
| Brand | SharkBite |
| Color | Brass |
| Item dimensions L x W x H | 2.08 x 1 x 1 inches |
| Connector Type | Coupling |
| Thread Size | 0.5 inch |
| Exterior Finish | Brass |
| Thread Type | NPT |
| Item Weight | 0.1 Pounds (1.59 ounces) |
| Number of Pieces | 6 |
| Manufacturer | Reliance Worldwide Corporation |
| Part Number | UR4008 |
| Item model number | UR4008 |
| Style | SharkBite Max |
| Item Package Quantity | 1 |
| Included Components | 1/2 Inch Polybutylene Transition Coupling, Pack of 6 |
| Rated Temperature | Up to 200 degrees F |
| Rated Pressure | Up to 400 PSI (2K maximum burst) |

Image: A list of third-party approvals and certifications for SharkBite Max products, including ASSE 1061, CSA B125.3, NSF/ANSI 14, NSF/ANSI/CAN 61, CAN/ULC S101, NSF/ANSI/CAN 372, ASTM E84, CAN/ULC S102.2, UL 263, and ASTM E119.
5. Maintenance
SharkBite Max fittings are designed for long-term reliability with minimal maintenance. Once properly installed, they create a secure, leak-proof connection.
- Regular Inspection: Periodically inspect visible connections for any signs of leaks or damage.
- Underground/Concealed Installations: For fittings installed underground or behind walls without access panels, ensure they are properly wrapped with SharkBite silicone self-adhesive tape as specified during installation to protect against environmental factors.
- Cleaning: If necessary, clean the exterior of the fittings with a mild soap and water solution. Avoid harsh chemicals that could damage the brass or seals.
6. Troubleshooting
While SharkBite Max fittings are designed for reliable performance, issues can occasionally arise. Here are some common troubleshooting tips:
- Leaks at Connection:
- Ensure the pipe was cut squarely and is free of burrs or scratches.
- Verify the pipe was inserted to the correct depth mark.
- Check that the correct pipe stiffener was used for HDPE pipes.
- Confirm the pipe material is compatible with the SharkBite Max fitting.
- If a leak persists, disconnect the fitting using a SharkBite disconnect clip/tool, inspect the O-ring for damage, and re-install or replace the fitting if necessary.
- Difficulty Inserting Pipe:
- Ensure the pipe end is clean and deburred.
- Apply a slight twisting motion while pushing the pipe firmly into the fitting.
- Verify the pipe size matches the fitting size.
7. Warranty Information
Specific warranty details for the SharkBite Max 1/2 Inch Polybutylene Transition Coupling are typically provided with the product packaging or can be found on the official SharkBite website. Generally, SharkBite products are backed by a manufacturer's warranty against defects in materials and workmanship when installed according to their instructions and applicable plumbing codes.
For detailed warranty terms and conditions, please refer to the documentation included with your purchase or visit the SharkBite official website.
8. Customer Support
For further assistance, technical support, or inquiries regarding your SharkBite Max Polybutylene Transition Coupling, please contact SharkBite customer service. Contact information can typically be found on the product packaging or the official SharkBite website.
You may also visit the SharkBite Store on Amazon for additional product information and resources.