Matco-norca cun04 3/4 Inch C X C Wrot Copper Union

Product Description

The Matco-Norca cun04 is a 3/4 inch wrot copper union fitting designed for sweat connection on both ends, following the standard C x C (copper by copper) configuration. This fitting is a go-to component for plumbers, pipefitters, and mechanical contractors who need a reliable, leak-free way to join two sections of copper tubing while maintaining the ability to disconnect the line in the future. A union differs from a standard coupling in one important way: it allows the joint to be taken apart without cutting the pipe. This makes it especially useful in tight spaces or anywhere service access is needed, such as near water heaters, boilers, pumps, and shutoff valve assemblies.

Wrot copper construction means the fitting is manufactured by a wrought process, which produces a denser, more refined grain structure compared to cast copper. The result is a fitting with greater strength, improved pressure ratings, and better resistance to stress and vibration. For high-demand plumbing and HVAC applications, wrot copper fittings are the preferred choice by most contractors and inspectors alike.

The 3/4 inch size is one of the most common in residential and light commercial plumbing systems. It is widely used for main water supply lines, branch lines feeding multiple fixtures, hydronic heating loops, and chilled water distribution. The C x C ends are sweat-soldered using standard copper soldering techniques, following ASTM B88 tubing compatibility. This fitting meets the requirements professionals expect for code-compliant installations.

• Wrot copper construction for superior strength and pressure performance
• C x C sweat ends compatible with standard 3/4 inch copper tubing
• Union design allows future disconnection without cutting pipe

Product Highlights

The Matco-Norca cun04 delivers a dependable 3/4 inch copper union fitting built from wrot copper for use in plumbing, HVAC, and hydronic systems where future serviceability is required.

Product Information

Standard Information

• Brand: MATCO-NORCA
• Manufacturer Part Number: cun04

Technical Specifications

• Connection Type: C x C (Copper by Copper, Sweat)
• Size: 3/4 inches
• Material: Wrot Copper
• Fitting Type: Union