Rehau 136051-020 Raupex O2 Barrier Pex-a Pipe 3/4 Inch X 20 Foot Stick

Product Description

The REHAU 136051-020 RAUPEX O2 Barrier Pipe is a high-quality PEX-A pipe designed for hydronic heating systems, radiant floor heating, and other closed-loop plumbing applications where oxygen diffusion control is critical. This pipe is manufactured using REHAU's high-pressure peroxide cross-linking method, which produces PEX-A material known for its superior flexibility, memory, and resistance to cracking compared to PEX-B or PEX-C alternatives. Each stick measures 3/4 inch in nominal diameter and 20 feet in length, making it a practical choice for residential and light commercial hydronic installations.

The oxygen diffusion barrier is co-extruded directly onto the pipe and exceeds the strict DIN 4726 standard for oxygen permeability. This barrier prevents oxygen from entering the hydronic system, which is essential for protecting ferrous components like cast iron boilers, pumps, manifolds, and radiators from corrosion and premature failure. Installers working with closed-loop heating systems know that even low levels of dissolved oxygen can cause significant long-term damage to system components, making an O2 barrier pipe a smart investment for any serious hydronic installation.

The RAUPEX 136051-020 meets or exceeds ASTM F876, ASTM F877, CSA B137.5, and PPI TR-3 standards. It also complies with the CSA B214 installation code specifically written for hydronic heating systems. REHAU manufactures this pipe in a facility certified to ISO 9001, ensuring consistent quality across every production run. The red color of this pipe makes it easy to identify in multi-pipe installations. The 7/8 inch outside diameter is compatible with standard 3/4 inch PEX fittings and manifold ports used across the trade.

• PEX-A material produced by high-pressure peroxide cross-linking for maximum flexibility and coil memory
• Co-extruded oxygen diffusion barrier exceeds DIN 4726 requirements, protecting ferrous system components
• Meets ASTM F876, ASTM F877, CSA B137.5, PPI TR-3, and CSA B214 hydronic installation code

Product Highlights

The REHAU 136051-020 RAUPEX O2 Barrier Pipe delivers reliable oxygen protection and proven PEX-A performance for hydronic heating professionals. It is manufactured to internationally recognized standards in an ISO 9001 certified facility.

Product Information

Standard Information

• Brand: REHAU
• Manufacturer Part Number: 136051-020

Technical Specifications

• Series: RAUPEX O2
• Material: PEX-A
• Color: Red
• Nominal Size: 3/4 inch
• Outside Diameter: 7/8 inch
• Length: 20 foot stick
• Oxygen Barrier Standard: DIN 4726
• Applicable Standards: ASTM F876, ASTM F877, CSA B137.5, PPI TR-3, CSA B214
• Quality Certification: ISO 9001