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Straight copper reducing coupling, 3/8 by 1/4 inch, smooth metallic finish

Nibco, Inc.

Nibco, Inc. C600 3/8x1/4 Copper Reducer Trap

SKU CH-RJ8W-GP0WG MPN C600

A copper reducer coupling joins 3/8 in. to 1/4 in. tubing for air, gas or potable water at up to 582 psi and 400 °F

  • TypeDrain Components
  • MaterialHAWA
  • Straight reducing coupling joins 3/8" and 1/4" copper tube sizes
  • Wrot copper construction handles 582 psi at 100°F
  • Sweat fitting design suits air, gases and potable water systems
  • Cup-to-cup connections enable secure soldered joints
  • Rated for continuous use up to 400°F

Sweat Fitting Reducer for Copper Pipework

This straight reducing coupling joins 3/8 inch nominal copper tube to 1/4 inch nominal tube using sweat connections on both ends. It is intended for plumbers and HVAC technicians who need a permanent, leak-free transition between these two copper sizes in potable water, air or gas lines. The fitting is manufactured from wrought copper and supplied new.

Pressure and Temperature Limits for the Fitting

The component is rated for a maximum operating pressure of 582 psi at 100 degrees Fahrenheit and a maximum operating temperature of 400 degrees Fahrenheit. These figures define the practical envelope for sweat-brazed installations in residential or light-commercial systems. Exceeding either limit risks joint failure and voids the manufacturer’s performance data.

Wrought Copper Construction and Cup Ends

Wrought copper provides consistent wall thickness and clean internal surfaces that promote strong capillary action during brazing. Both cup ends are sized for standard copper tube outer diameters, allowing direct insertion without adapters. The straight profile keeps the joint compact, which helps in tight cavities where space for torch work is limited.

Highlights

  • Straight reducing coupling joins 3/8" and 1/4" copper tube sizes
  • Wrot copper construction handles 582 psi at 100°F
  • Sweat fitting design suits air, gases and potable water systems
  • Cup-to-cup connections enable secure soldered joints
  • Rated for continuous use up to 400°F

Specifications

TypeDrain Components
MaterialHAWA
BrandNibco
ModelC600 3/8x1/4

Questions about this item

Should I choose the 3/8 in by 1/4 in reducer or a different size for my copper tubing?

Select this C600 reducer when you need to join 3/8 in copper tube to 1/4 in copper tube; the cup ends accept 1/2 in and 3/8 in outer diameters respectively.

What does the 582 psi rating mean once the fitting is installed in a plumbing system?

The joint will safely handle up to 582 psi at 100 °F, which covers typical residential and light-commercial water and air lines.

How does the sweat-cup connection limit the pressure or temperature I can run?

The sweat-cup design is rated for 582 psi at 100 °F and up to 400 °F maximum, so soldered joints stay within those limits in service.

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