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Bronze 90-degree Hy-Set elbow trap with sweat and threaded ends

Nibco, Inc.

Nibco, Inc. 70735ALF-12 90° Hy-Set Elbow Trap 1/2 in

SKU CH-CB1Q-79M4X MPN 70735ALF-12

A 90-degree Hy-Set elbow trap with sweat and FNPT connections for 1/2-inch copper tube in potable water systems

  • TypeDrain Components
  • MaterialHAWA
  • Lead-free bronze meets NSF/ANSI 372 and 61 for potable water
  • 90° Hy-Set elbow enables tight sweat-to-thread transitions
  • Rated to 577 psi and 200 °F for demanding supply lines
  • Cast from C87850 alloy under ISO 9001 quality system
  • Complies with ASME B16.18 dimensional standard

Plumbing Elbow for Potable Water Systems

The Nibco 70735ALF-12 is a 90-degree Hy-Set elbow designed for potable water applications. It connects a 1/2-inch copper tube on one side to a 1/2-inch FNPT thread on the other. The fitting is manufactured from low-lead cast bronze material grade C87850. It meets ASME B 16.18, NSF/ANSI 61, and NSF/ANSI 372 standards for safe drinking water use.

Upgrade from Threaded or Compression Connections

This sweat fitting replaces threaded or compression elbows where a permanent, leak-resistant joint is preferred. The jump is worth it when installing new copper supply lines or repairing existing systems where soldering access is available. It handles a maximum operating pressure of 577 psi and temperatures up to 200 degrees F. The bronze construction provides corrosion resistance for long service life in residential or commercial plumbing.

Verify Copper Tube Size and Soldering Capability

Confirm your existing copper tubing has a 1/2-inch nominal size with a 5/8-inch outer diameter to match the cup connection. Ensure you have the tools and skill for sweat soldering, as this fitting requires flux and solder for installation. Check that the system pressure and temperature ratings align with the 577 psi and 200-degree F limits. This item is not restricted for sale in any state.

Highlights

  • Lead-free bronze meets NSF/ANSI 372 and 61 for potable water
  • 90° Hy-Set elbow enables tight sweat-to-thread transitions
  • Rated to 577 psi and 200 °F for demanding supply lines
  • Cast from C87850 alloy under ISO 9001 quality system
  • Complies with ASME B16.18 dimensional standard

Specifications

TypeDrain Components
MaterialHAWA
BrandNibco
Model70735ALF-12

Questions about this item

What pipe sizes does the 1/2 in Hy-Set elbow connect?

It joins a 1/2 in copper tube with a 5/8 in outside diameter on the sweat side to a 1/2 in FNPT threaded pipe on the other side.

How is the sweat end installed, and what is the common mistake?

Clean the copper tube, apply flux, slide the cup onto the tube, then heat evenly and feed solder until the joint is full; the frequent error is overheating before adding solder, which burns the flux and leaves voids.

What maintenance or replacement should be expected later?

Bronze construction resists corrosion, so the fitting itself rarely needs replacement; periodic visual checks for leaks or green patina at the joint are sufficient.

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