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4 inch copper coupling with smooth metallic finish

Legend Valve

Legend Valve 450-511 4" Copper Coupling bathware

SKU CH-6J3V-8412Q

A 4-inch copper coupling joins two pipes of the same diameter for a watertight plumbing connection

  • ColorTransparent
  • Size4" x 4-1/8"
  • TypePipes, Valves & Fittings
  • 4" copper coupling joins same-size pipes securely
  • C x C sweat connection creates leak-resistant joints
  • Copper construction resists corrosion in plumbing systems
  • Transparent finish allows visual inspection of solder flow
  • Prop 65 warning indicates regulated chemical content

Copper Coupling for Plumbing Installations

The Legend Valve 450-511 is a 4" copper coupling designed to join two copper pipes of matching diameter in residential or commercial plumbing systems. It uses a C x C sweat connection for a permanent, leak-resistant joint. The fitting is supplied new and meets standard dimensions for 4" inside diameter and 4-1/8" outside diameter pipe.

Replaces Worn or Damaged Copper Fittings

This coupling replaces a corroded, cracked or incorrectly sized section of copper pipe during repairs or system alterations. The jump is worth it when the existing joint cannot be re-soldered reliably or when a straight, code-compliant connection is required between two clean pipe ends.

Suits Installers Working with 4" Copper Pipe

The fitting suits plumbers and maintenance crews joining 4" copper pipe in water supply or hydronic heating lines. It is not for use with plastic, steel or smaller-diameter copper pipe, nor for press-fit or compression systems that do not accept sweat solder joints. Buyers needing a different diameter, material or connection type should look at other fittings.

Highlights

  • 4" copper coupling joins same-size pipes securely
  • C x C sweat connection creates leak-resistant joints
  • Copper construction resists corrosion in plumbing systems
  • Transparent finish allows visual inspection of solder flow
  • Prop 65 warning indicates regulated chemical content

Specifications

BrandLEGEND VALVE
ColorTransparent
Size4" x 4-1/8"
TypePipes, Valves & Fittings

Questions about this item

What copper pipe sizes does the 450-511 coupling join?

It connects 4-inch inside-diameter copper pipe to 4-1/8-inch outside-diameter copper pipe using a C x C solder joint.

How is the Legend Valve 450-511 installed, and what step do installers often miss?

Clean both pipe ends and the fitting interior, apply flux, slide the coupling on, then heat evenly with a torch until solder flows fully around the joint; the missed step is thorough cleaning before flux.

When should the 450-511 copper coupling be inspected or replaced?

Inspect during any system drain-down for green corrosion, pitting, or leaks at the solder joints; replace if the copper shows dezincification or if a pressure test reveals seepage.

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