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Low-lead cast bronze union fitting with copper and male threaded ends

Nibco, Inc.

Nibco, Inc. 7334LF-12 trap

SKU CH-MQKZ-1TRNY MPN 7334LF-12

Low-lead bronze union connects 1/2-inch tubing to male pipe threads at up to 577 psi

  • Product typeDrain Components
  • Low-lead bronze meets NSF/ANSI 61 Annex G for potable water safety
  • Rated to 577 psi for reliable high-pressure performance
  • Operates from -20 to 200 degrees F across diverse environments
  • C x MNPT union enables straightforward copper-to-pipe transitions
  • Durable cast bronze construction resists corrosion for long service life

Union fitting for 1/2 in copper and male pipe

This low-lead cast bronze union connects 1/2 in copper tubing to a 1/2 in male NPT thread. It is rated for a maximum pressure of 577 psi and operates from -20 to 200 degrees F. The fitting meets NSF/ANSI 61 Annex G standards for potable water use. Suitable for residential and commercial plumbing installations.

Installers needing C x MNPT transition on 1/2

Plumbers joining 5/8 in OD copper to male pipe threads on 1/2 in nominal lines will find this union matches the required connection type. It is not intended for press-fit, push-fit or sweat-only systems that lack male threads. Builders requiring lead-free compliance for drinking water can use this component.

Connection type C x MNPT on 1/2 in nominal size

The single specification that determines fit is the C x MNPT connection joining 1/2 in copper tube to 1/2 in male pipe thread. Verify that both mating ends match this exact configuration before purchase.

How it compares

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

Price $22.99
Cheaper than about 60% of the 4,240 comparable items (median $31.99).

Specifications

Product
Brand nameNibco
Model name7334LF-12
Product typeDrain Components

Questions about this item

Should I choose the 1/2 in C x MNPT version for my 1/2 in pipe size?

Yes, the 1/2 in C x MNPT fitting matches a 1/2 in pipe size and 5/8 in outside diameter for a direct connection.

What does the 577 psi rating mean once the union is installed?

The union is rated to hold up to 577 psi at operating temperatures, so it will contain typical residential and light commercial water pressures without leaking.

How does the NSF/ANSI 61 Annex G standard cap the lead content in practice?

NSF/ANSI 61 Annex G certifies the low-lead cast bronze meets the legal limit for lead leaching, making it compliant for potable water systems.

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