SHARKBITE UC4008LFA — 1/2 IN × 1/2 IN PEX‑TO‑POLYBUTYLENE TRANSITION ADAPTER (LEAD‑FREE DZR BRASS)

The SharkBite UC4008LFA is a 1/2 in × 1/2 in barbed transition adapter designed to connect legacy polybutylene (PB) piping to modern PEX tubing. This fitting provides a secure, code‑approved mechanical connection using the standard crimp‑ring method and includes two color‑coded crimp rings to ensure correct installation—black for PEX and copper for PB.

Constructed from lead‑free DZR brass, the adapter offers outstanding corrosion resistance, reliability, and long service life. It is certified for use in potable‑water systems, radiant heating, and hydronic applications, making it an ideal solution for repiping projects where PB lines must be safely upgraded without complete system replacement.

The UC4008LFA connects directly to compatible PEX and PB tubing and is installed using traditional crimp or clamp tools. It is frequently used in remodels, service repairs, and system transitions to bring older plumbing up to modern standards.

DETAILS

• Model: UC4008LFA
• Configuration: 1/2 in PEX barb × 1/2 in PB barb
• Material: Lead‑free DZR brass
• Included Components: Black PEX crimp ring and copper PB crimp ring
• Working Temperature: 33°F–200°F
• Working Pressure: Up to 160–200 psi (temperature‑dependent)
• Certifications: NSF‑listed, UPC/IPC/cUPC compliant
• Application: Potable water, hydronic heating, PB‑to‑PEX transition systems

KEY FEATURES

• Provides a reliable transition from polybutylene pipe to modern PEX
• Color‑coded crimp rings ensure proper installation
• Lead‑free DZR brass construction offers enhanced corrosion resistance
• Compatible with all PEX types (A/B/C) and standard PB tubing
• Simple, permanent, and cost‑effective mechanical connection
• Ideal for remodels, repiping projects, and PB plumbing upgrades

APPLICATIONS

• Replacing failing or outdated PB systems
• Connecting PEX during remodels or service repairs
• Hydronic heating loops and radiant‑heat system transitions
• Potable‑water distribution upgrades to PEX
• Mixed‑material plumbing retrofits