Uponor 21222A 3/4 in Cts Red Pex-a Tubing 20 Ft

Product Description

The UPONOR 21222A is a 3/4-inch CTS red PEX-A tubing sold in a 20-foot length, designed for use in potable water distribution, hydronic heating, and radiant floor systems. PEX-A is manufactured using the Engel method, which produces the most flexible and kink-resistant form of crosslinked polyethylene tubing available. The red color coding follows standard plumbing convention to indicate hot-water lines, making installation identification straightforward on the job. Licensed plumbers and hydronic contractors install this tubing in both new construction and retrofit applications.

This tubing is suited for residential and light commercial plumbing and hydronic heating installations. The 3/4-inch CTS sizing is commonly used for main distribution runs feeding multiple fixtures or zone loops in radiant systems. Its flexibility allows it to be routed through framing, under slabs, and through transfer plates without the need for as many fittings as rigid pipe alternatives. The 20-foot cut length is practical for smaller repair jobs or supplemental runs where coiled stock is not required.

Key Features

• PEX-A construction using the Engel method for superior flexibility and kink resistance
• 3/4-inch CTS dimension fits standard PEX fittings, expansion fittings, and clamp-ring systems
• Red color coding identifies hot-water or supply-side hydronic lines at a glance
• 20-foot straight length reduces coil memory and is easy to handle in tight spaces
• Compatible with potable water distribution and closed-loop hydronic heating applications

Compatibility

Designed as an OEM-style crosslinked polyethylene tubing for use with standard 3/4-inch CTS PEX fittings and connection systems in residential and light commercial plumbing and hydronic heating installations.

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 system before cutting into any existing line. Use a dedicated PEX pipe cutter to ensure a clean, square cut for a leak-free connection. Avoid exposing PEX tubing to direct UV light for extended periods, as prolonged sun exposure can degrade the material.

Technical Specifications

• Tubing Type: PEX-A (Engel Method)
• Size: 3/4 inch CTS
• Color: Red
• Length: 20 feet
• UPC: 813927011895
• Order Increment: 1

Standard Information

• Brand: UPONOR
• Manufacturer Part Number: 21222A