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Cast bronze flanged sink elbow, ninety-degree copper fitting with flange connection

Nibco, Inc.

Nibco, Inc. 708 Cast Bronze Flanged Sink Copper Elbow 1/2

SKU CH-0S3D-R9J35

A 90-degree cast-bronze flanged sink elbow with a 1/2-inch copper tube connection rated to 577 psi at 200 °F

  • Cast bronze construction resists corrosion for long service life
  • 90-degree flanged elbow routes copper tubing neatly at sink connections
  • 577 psi rating at 200 °F handles high-pressure hot-water lines
  • Temperature range from -20 °F to 400 °F suits both chilled and heating systems
  • Meets ASME B16.18 standard for reliable fitting dimensions

1/2-Inch Cast Bronze Flanged Sink Elbow

This 90-degree elbow connects a 5/8-inch outside-diameter copper tube to a 1/2-inch female NPT thread. It is made from cast bronze and rated for pressures up to 577 psi at 200 degrees Fahrenheit. The fitting suits potable-water and hydronic-heating installations that require a secure flanged connection. It meets ASME B16.18 dimensional standards.

Flanged Connection Simplifies Installation

The integral flange allows the elbow to be bolted directly to a matching sink or equipment flange without separate adapters. This reduces the number of joints and potential leak paths in the assembly. The C x FNPT configuration transitions from soldered copper tube to threaded pipe in a single fitting. No additional sealing compounds are required beyond standard practice for the joint types.

Temperature And Pressure Limits Define Service Range

Continuous operation is limited to a maximum of 400 degrees Fahrenheit and 577 psi at 200 degrees Fahrenheit. The lower temperature bound is -20 degrees Fahrenheit, so the fitting is not suited for cryogenic fluids. Systems that exceed these pressure or temperature ratings must use a different class of fitting. The cast bronze body does not accommodate higher-pressure steam service beyond the stated limits.

How it compares

Measured against everything we stock in Hose Fittings, Adapters & Clamps, at today’s prices. Recalculated every night.

Price $10.99
Cheaper than about 68% of the 2,955 comparable items (median $17.99).

Specifications

Product
Brand nameNibco

Questions about this item

Will the cast-bronze body or the flanged connection need periodic replacement under normal service?

The cast bronze construction resists corrosion and the flanged joint is permanent once soldered, so no scheduled replacement is required.

What pressure or temperature limit will be reached first during continuous hot-water circulation?

The 577 psi rating at 200 °F is the governing pressure ceiling; sustained temperatures above 400 °F exceed the rated range.

Does the elbow transmit vibration or heat into the surrounding cabinet when the line runs all day?

Bronze conducts heat, so the fitting will reach fluid temperature, but it has no moving parts and generates no noise or vibration.

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