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Bronze 90-degree sweat elbow with copper cup and male pipe thread

Nibco, Inc.

Nibco, Inc. 7074LF-34 90° Elbow Trap

SKU CH-NKPB-14164 MPN 7074LF-34

A 90-degree sweat elbow joins 3/4-inch copper tube to male pipe threads for potable water systems

  • TypeDrain Components
  • MaterialHAWA
  • Lead-free bronze meets NSF/ANSI 372 for safe potable water
  • 466 psi rating handles high-pressure supply lines
  • 200 °F maximum temperature suits hot-water systems
  • 90 ° elbow redirects flow in tight spaces
  • Sweat-to-MNPT connection joins copper to threaded pipe

90-Degree Bronze Elbow Fitting

This sweat-fitting elbow connects 3/4 in copper tube to a 3/4 in male NPT thread in potable-water systems. It is made from low-lead cast bronze rated to 466 psi and 200 degrees F. The fitting meets ASME B16.18, NSF/ANSI 61 and NSF/ANSI 372 standards. It suits residential and commercial plumbing installations.

Installers needing cup-to-MNPT transition

The fitting serves plumbers who must join copper tubing to threaded pipe at a right angle. It is not suited for drain-waste-vent lines or high-temperature hydronic loops beyond the rated limits. Buyers requiring press, push-fit or flare connections should select a different fitting style.

Cup x MNPT 3/4 in connection

The critical specification is the combination of a 3/4 in copper tube cup on one end and a 3/4 in male NPT thread on the other. This exact interface determines whether the elbow matches the piping layout. Verify both sides before purchase.

Highlights

  • Lead-free bronze meets NSF/ANSI 372 for safe potable water
  • 466 psi rating handles high-pressure supply lines
  • 200 °F maximum temperature suits hot-water systems
  • 90 ° elbow redirects flow in tight spaces
  • Sweat-to-MNPT connection joins copper to threaded pipe

Specifications

TypeDrain Components
MaterialHAWA
BrandNibco
Model7074LF-34

Questions about this item

Does the bronze elbow reach the 200 Degrees F limit during continuous hot-water circulation?

The fitting is rated for a maximum operating temperature of 200 Degrees F, so continuous circulation at or below that temperature stays within specification.

What pipe and tube sizes must already be in place for the 3/4 in copper sweat and 3/4 in MNPT connections?

You need 3/4 in copper tube with a 7/8 in outer diameter for the sweat side and 3/4 in male NPT threads on the mating pipe for the threaded side.

Will the ASME B 16.18 and NSF/ANSI 61 certifications on this elbow match older copper and bronze fittings already installed?

Yes, the elbow meets ASME B 16.18 and NSF/ANSI 61, the same standards that govern most existing potable-water copper and bronze fittings.

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