Mueller Industries h-15403n 2 Inch Straight Union Cts

Product Description

The MUELLER INDUSTRIES h-15403n is a 2-inch straight 3-part union fitting designed for use with Conductive Compression CTS (Copper Tube Size) O.D. tubing. Constructed from brass, this union provides a secure, leak-resistant connection between two sections of CTS tubing without requiring soldering or open flame. The 3-part union design allows the joint to be disconnected and reconnected for servicing, making it practical for installations where future access or disassembly may be required. Plumbing and mechanical contractors install this fitting in potable water, hydronic, and general plumbing systems where compression-style connections are specified.

This fitting is suited for residential and light commercial plumbing applications where CTS O.D. tubing is used. The conductive compression design maintains electrical continuity across the joint, which is important in systems that require grounding continuity through the piping. Typical install scenarios include water service lines, distribution piping, and mechanical room connections where a serviceable union is needed at equipment or shutoff locations.

Key Features

• 3-part union design allows disconnection and reconnection without cutting tubing
• Conductive Compression CTS end style maintains grounding continuity across the fitting
• Brass construction offers corrosion resistance suitable for water service applications
• 2-inch nominal size accommodates standard 2-inch CTS O.D. tubing
• No soldering required — compression fitting installs with common hand tools

Compatibility

Designed for use with Mueller 110 Conductive Compression CTS O.D. tubing on both ends. Suitable as an OEM-style replacement or new-installation union in systems using standard 2-inch CTS O.D. copper tubing.

Installation Notes

This fitting is installed by licensed plumbers in accordance with applicable local plumbing codes and IPC guidelines. Shut off the water supply and relieve system pressure before disassembling or installing any union fitting. Ensure tubing ends are cut cleanly and squarely and are free of burrs before seating into the compression ends. Do not overtighten compression nuts — follow standard practices for brass compression fittings to avoid cracking the fitting body.

Technical Specifications

• Nominal Size: 2 inches
• End Style: Conductive Compression CTS
• Fitting Type: Straight 3-Part Union
• Material: Brass

Standard Information

• Brand: MUELLER INDUSTRIES
• Manufacturer Part Number: h-15403n