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Small cast copper union trap with solder-cup ends, metallic finish

Nibco, Inc.

Nibco, Inc. U733 1/2 in Cast Copper Union Trap

SKU CH-0879-GBNET MPN U733

Cast copper union trap joins 1/2 in tubing with C x C connections, rated 722 psi at 100 °F and -20 to 400 °F operating range, meeting ANSI B16.18 standard

  • TypeDrain Components
  • MaterialHAWA
  • Cast copper construction resists corrosion
  • C x C connection fits 1/2 in tube with 5/8 in OD
  • Rated 722 psi at 100 Degrees F for high-pressure lines
  • ANSI B 16.18 compliant for code-approved installations

Union Trap for Copper Piping

The Nibco U733 is a cast copper union trap designed for 1/2 inch tube size with a 5/8 inch outside diameter. It provides a removable joint in drainage systems using C x C fitting connections. The component suits residential and commercial plumbing installations requiring copper alloy construction.

Check Pipe Size and Pressure Rating

Verify that your existing piping uses 1/2 inch nominal tube with a 5/8 inch outside diameter for a correct C x C fit. Confirm the system operating pressure does not exceed 722 psi at 100 degrees Fahrenheit. Ensure the service temperature stays within the range of minus 20 to 400 degrees Fahrenheit and that ANSI B16.18 compliance meets local code requirements.

Highlights

  • Cast copper construction resists corrosion
  • C x C connection fits 1/2 in tube with 5/8 in OD
  • Rated 722 psi at 100 Degrees F for high-pressure lines
  • ANSI B 16.18 compliant for code-approved installations

Specifications

TypeDrain Components
MaterialHAWA
BrandNibco
ModelU733 1/2

Questions about this item

Does the U733 union include any gaskets or solder, or must those be purchased separately?

The U733 is supplied as the cast copper union only; gaskets, solder and flux are not included and must be bought separately.

Which tube size should I select to match 1/2 in copper pipe with a 5/8 in outside diameter?

Choose the 1/2 in version — it is made for 1/2 in nominal tube with a 5/8 in outside diameter and a C x C solder connection.

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