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Bronze fitting union, 3/8 inch C by MNPT, model 7334

Nibco, Inc.

Nibco, Inc. 7334 3/8 in C x MNPT Trap

SKU CH-JF01-HA1RM MPN 7334

Cast-bronze drain union with 3/8 in C x MNPT connection, rated 623 psi at 200 °F and meeting ASME B 16.18

  • TypeDrain Components
  • MaterialHAWA
  • Cast bronze construction resists corrosion for long service life
  • 623 psi at 200 °F rating handles demanding pressure applications
  • Operating range from -20 °F to 400 °F suits hot and cold systems
  • C × MNPT connection simplifies copper-to-threaded pipe transitions
  • Meets ASME B 16.18 standard for reliable fitting performance

3/8 in C x MNPT Fitting Union

The Nibco 7334 is a cast bronze drain component designed to join a 3/8 in copper tube to a male NPT thread. It suits residential and light commercial plumbing installations that require a reliable, sweat-to-thread transition.

Verify tube size and thread standard before ordering

Confirm the existing copper line measures 3/8 in outside diameter and that the mating port uses NPT threads. The fitting is rated to ASME B 16.18, so ensure your system design follows that standard.

Rated for 623 psi at 200 °F across a -20 °F to 400

Cast bronze construction maintains joint integrity under sustained pressure and temperature cycling without the creep seen in softer alloys. The material resists dezincification in aggressive water conditions.

Highlights

  • Cast bronze construction resists corrosion for long service life
  • 623 psi at 200 °F rating handles demanding pressure applications
  • Operating range from -20 °F to 400 °F suits hot and cold systems
  • C × MNPT connection simplifies copper-to-threaded pipe transitions
  • Meets ASME B 16.18 standard for reliable fitting performance

Specifications

TypeDrain Components
MaterialHAWA
BrandNibco
Model7334 3/8

Questions about this item

What comes in the box with the Nibco 7334 fitting union?

The box contains the cast bronze fitting union with C x MNPT connections for 3/8 in tube and pipe size. No additional seals or tools are included.

How do I choose the right version of the 7334 for my system?

This model is a single 3/8 in C x MNPT configuration rated to 623 psi at 200 °F and meets ASME B16.18. Select it when those exact size and pressure ratings match your piping.

What does the 623 psi at 200 °F rating mean once installed?

It indicates the maximum working pressure the union can handle at that temperature. The fitting operates safely from -20 °F up to 400 °F within the stated pressure limit.

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