Uponor 21228A Red Pex-a Tubing 1 Inch Cts 20 Ft

Product Description

The UPONOR 21228A is a 1-inch CTS Red PEX-A tubing supplied in a 20-foot length. PEX-A is manufactured using the Engel method, which produces the highest degree of crosslinking among PEX types, resulting in superior flexibility and shape memory. Red color coding identifies the tubing as intended for hot-water distribution lines. Licensed plumbers and hydronic heating installers use this tubing in residential and light commercial applications where corrosion resistance and freeze recovery are priorities.

This tubing is suited for domestic hot water supply, radiant floor heating systems, and hydronic baseboard distribution. The 1-inch CTS sizing fits standard CTS transition fittings and expansion-style connections common in PEX-A installations. Its flexibility allows routing through framing cavities and around obstructions with fewer fittings than rigid pipe alternatives, reducing potential leak points in the system.

Key Features

• PEX-A construction via Engel method for maximum crosslink density and flexibility
• Red color coding for hot-water line identification at a glance
• 1-inch CTS dimension compatible with standard CTS fittings and expansion tools
• 20-foot length suitable for targeted repairs or shorter distribution runs
• Corrosion-resistant material eliminates concerns about scale buildup and electrochemical degradation

Compatibility

Designed as an OEM-style replacement and new-installation tubing for 1-inch CTS PEX-A plumbing and hydronic heating systems using expansion-style or CTS-compatible fittings.

Installation Notes

Installation should be performed by a licensed plumber in accordance with local plumbing codes and ASTM F876/F877 standards. Shut off the water supply and depressurize the line before cutting or joining tubing. PEX-A expansion connections require a compatible expansion tool and ring; crimp or clamp tools are not appropriate for PEX-A expansion fittings. Support tubing at intervals per code to prevent sagging in horizontal runs.

Technical Specifications

• Tubing Type: PEX-A
• Size: 1 inch CTS
• Length: 20 feet
• Color: Red
• UPC: 813927011918
• Order Increment: 1

Standard Information

• Brand: UPONOR
• Manufacturer Part Number: 21228A