Uponor 21122A 3/4 Inch Red Pex-a Tubing 100 Foot Roll

Product Description

The UPONOR 21122A is a 3/4-inch CTS red PEX-A tubing supplied in a 100-foot roll, designed for hot and cold water distribution in residential and light commercial plumbing systems. PEX-A is produced using the Engel method, which crosslinks the polyethylene during the manufacturing process for superior flexibility and shape memory compared to PEX-B or PEX-C. The red color coding identifies this tubing as intended for hot-water supply lines, simplifying rough-in layout and inspection. Licensed plumbers and hydronic heating contractors are the primary installers of this product.

This tubing is suited for potable water supply, radiant floor heating, and hydronic distribution applications in residential new construction and retrofit projects. The 100-foot roll length accommodates a wide range of rough-in runs with minimal joints. Its flexibility allows it to navigate framing cavities and mechanical chases without excessive fittings, reducing potential leak points in finished assemblies.

Key Features

• PEX-A construction using the Engel crosslinking method for superior flexibility and shape memory
• Red color coding for hot-water supply line identification per standard plumbing convention
• 3/4-inch CTS sizing compatible with standard PEX crimp, clamp, and expansion fittings
• 100-foot roll length reduces splices and speeds rough-in installations
• Flexible enough to bend around obstacles without heat or fittings in most framing conditions

Compatibility

Designed as an OEM-style replacement and new-installation tubing for 3/4-inch CTS PEX plumbing systems using standard crimp, clamp, or expansion-style fittings and valves.

Installation Notes

Installation should be performed by a licensed plumber in accordance with the International Plumbing Code and applicable local codes. Shut off the water supply and depressurize the system before making any connections. Use only fittings and tools rated for PEX-A tubing in the correct CTS size, and follow minimum bend-radius guidelines to avoid kinking. Inspect all connections for leaks before covering or enclosing the tubing in walls or slabs.

Technical Specifications

• Tubing Type: PEX-A (Engel Method)
• Size: 3/4 inch CTS
• Color: Red
• Roll Length: 100 feet
• UPC: 813927011833

Standard Information

• Brand: UPONOR
• Manufacturer Part Number: 21122A