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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

  • Product typeDrain Components
  • Main 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.

How it compares

Measured against everything we stock in Drain Stoppers, Strainers & Traps, at today’s prices. Recalculated every night.

Price $16.99
Cheaper than about 70% of the 4,240 comparable items (median $31.99).

Specifications

Product
Brand nameNibco
Model name7334 3/8
Product typeDrain Components
Size & build
Main materialHAWA

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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