1/2" x 300' hePEX Barrier Tube Coil, Heat Transfer, White

Product Overview

The Uponor A1250500 HePEX™ Barrier Tubing is an oxygen-barrier PEX-a (crosslinked polyethylene) tube engineered for hydronic heating and cooling distribution systems. Designed for long-term reliability under continuous service pressure and temperature conditions, the tubing includes an EVOH oxygen diffusion barrier to prevent system corrosion and ensure efficient operation in closed-loop hydronic applications. Supplied in a 300-foot coil, this tubing provides flexibility and strength for professional radiant and hydronic installations.

Technical Specifications

• Manufacturer: Uponor, Inc.
• Model Number: A1250500
• Description: HePEX™ Oxygen-Barrier PEX-a Tubing Coil
• Reference Number: 19755
• Nominal Size: 1/2 in
• Inside Diameter (ID): 0.475 in (12.07 mm)
• Outside Diameter (OD): 0.625 in (15.88 mm)
• Coil Length: 300 ft (91.44 m)
• Material: Crosslinked polyethylene (PEX-a) with EVOH oxygen barrier layer
• Color: White
• Temperature Range: 73.4°F to 200°F (23°C to 93°C)
• Pressure Ratings:
  • 160 psi @ 73.4°F (23°C)
  • 100 psi @ 180°F (82°C)
  • 80 psi @ 200°F (93°C)
• Barrier Type: EVOH oxygen diffusion barrier meeting DIN 4726 requirements
• Applications:
  • Radiant floor and panel heating systems
  • Hydronic baseboard and radiator connections
  • Snow and ice melt systems
  • Hydronic cooling and chilled water loops
• Certifications and Compliance:
  • ASTM F876 / F877
  • CSA B137.5
  • DIN 4726 (oxygen transmission compliance)
• Installation Compatibility: Designed for use with Uponor ProPEX® expansion fittings and other approved mechanical connections
• Storage and Handling: Protect from direct UV exposure; follow Uponor installation and handling guidelines

Summary

The Uponor A1250500 HePEX™ Barrier Tubing is a 1/2-inch, 300-foot PEX-a coil incorporating an EVOH oxygen barrier for closed-loop hydronic applications. Rated for 80 to 160 psi and up to 200°F, this tubing offers professional-grade performance, flexibility, and compliance with ASTM and CSA standards for radiant heating and cooling system installations.