Rehau 136051-300 Raupex O2 Barrier Pex-a Pipe 3/4 Inches X 300 Ft Coil Red

Product Description

The REHAU 136051-300 is a RAUPEX O2 barrier pipe made from high-quality PEX-A material, designed for hydronic heating systems and radiant floor heating applications. This pipe is manufactured using REHAU's high-pressure peroxide cross-linking method, which produces a consistent and uniform molecular structure throughout the pipe wall. PEX-A is widely recognized as the highest-quality form of cross-linked polyethylene, offering superior flexibility, freeze resistance, and long-term durability compared to PEX-B and PEX-C alternatives. The 3/4-inch nominal size with a 300-foot coil length makes this product ideal for larger hydronic heating installations, radiant heating loops, and snow melt systems where extended continuous runs are required. The co-extruded oxygen diffusion barrier on this pipe exceeds the strict requirements of DIN 4726, which is the international standard for limiting oxygen permeation in hydronic systems. Oxygen infiltration in closed-loop heating systems can cause corrosion in metal components such as boilers, circulators, manifolds, and heat exchangers. By using RAUPEX O2 barrier pipe, installers protect these critical system components and extend the overall service life of the heating system. This pipe meets or exceeds the requirements of ASTM F876, ASTM F877, CSA B137.5, and PPI TR-3, ensuring compliance with major North American plumbing and heating codes. It also complies with CSA B214, the installation code for hydronic heating systems in Canada. The pipe is produced in a facility certified to ISO 9001, reflecting a rigorous quality management system. The red color coding provides quick visual identification for hot-side or supply-side piping in hydronic systems. HVAC technicians and plumbers rely on RAUPEX O2 barrier pipe for reliable, long-lasting performance in residential and commercial radiant heating projects.

• PEX-A construction using high-pressure peroxide cross-linking method for superior flexibility and performance
• Co-extruded oxygen diffusion barrier exceeds DIN 4726 requirements, protecting metal system components from corrosion
• Meets ASTM F876, ASTM F877, CSA B137.5, PPI TR-3, and CSA B214 standards for hydronic heating installations

Product Highlights

The REHAU 136051-300 RAUPEX O2 barrier pipe delivers ISO 9001-certified quality in a flexible, 300-foot PEX-A coil that meets the most demanding hydronic heating and radiant system installation requirements. Its oxygen barrier technology safeguards metal components throughout the system for long-term reliability.

Product Information

Standard Information

• Brand: REHAU
• Manufacturer Part Number: 136051-300

Technical Specifications

• Color: Red
• Length: 300 ft Coil
• Material: PEX-A
• Nominal Size: 3/4 inches
• Outside Diameter: 7/8 inches
• Oxygen Barrier Standard: DIN 4726
• Certifications: ASTM F876, ASTM F877, CSA B137.5, PPI TR-3, CSA B214
• Quality Management: ISO 9001 Certified