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Copper reducing adapter with threaded and sweat ends

Nibco, Inc.

Nibco, Inc. U604 trap 3/4x1/2 C x MNPT copper reducing adapter

SKU CH-1SZK-ME2EK MPN U604

Connects 3/4 inch copper tube to 1/2 inch male pipe thread, rated to 582 psi at 100 degrees F

  • TypeDrain Components
  • Reduces tube size from 3/4 in to 1/2 in MNPT for flexible plumbing connections
  • Wrought copper construction resists corrosion across -20 to 400 °F operating range
  • Rated to 582 psi at 100 °F for reliable high-pressure performance
  • Meets ASME/ANSI B16.22 standard ensuring code-compliant installations
  • Compact 7/8 in outside diameter fits tight spaces in drain component assemblies

Copper Reducing Adapter for Plumbing Installations

This Nibco U604 fitting connects a 3/4 inch nominal copper tube to a 1/2 inch male pipe thread. It is designed for contractors and DIY plumbers who need a reliable transition between different pipe sizes in water supply or hydronic systems.

C x MNPT Connection with ASME B16.22 Compliance

The adapter features a wrought copper body with a 3/4 inch C end and a 1/2 inch MNPT end. It meets ASME/ANSI B16.22 standards for pressure and dimensional tolerances, ensuring code-compliant installations.

Rated for 582 psi at 100 Degrees F

The fitting withstands pressures up to 582 psi at 100 degrees Fahrenheit. Its operating range spans from -20 to 400 degrees Fahrenheit, making it suitable for both hot and cold water lines as well as heating applications.

Highlights

  • Reduces tube size from 3/4 in to 1/2 in MNPT for flexible plumbing connections
  • Wrought copper construction resists corrosion across -20 to 400 °F operating range
  • Rated to 582 psi at 100 °F for reliable high-pressure performance
  • Meets ASME/ANSI B16.22 standard ensuring code-compliant installations
  • Compact 7/8 in outside diameter fits tight spaces in drain component assemblies

Specifications

TypeDrain Components
BrandNibco
ModelU604 3/4x1/2

Questions about this item

What does the 582 psi rating mean once the adapter is installed?

The 582 psi rating is the maximum pressure the wrot copper adapter can handle at 100 Degrees F when soldered into a copper piping system.

What standard governs the C x MNPT threads and what does it cap in practice?

ASME/ANSI B 16.22 governs the wrot copper fitting dimensions, ensuring the 3/4 in nominal C end and 1/2 in MNPT thread mate with matching copper tube and pipe fittings.

What pipe and tube sizes must I have for this reducing adapter to fit?

You need 3/4 in nominal copper tube for the C end and 1/2 in male NPT pipe threads for the MNPT end; the outside diameter is 7/8 in by 1/2 in.

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