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Cast bronze reducing elbow with two copper sweat connections, rough unfinished surface

Nibco, Inc.

Nibco, Inc. 707R Cast Bronze Reducing Elbow 1-1/4" x 3/4

SKU CH-47RY-BKDK6

Cast bronze reducing elbow joins 1-1/4 in. and 3/4 in. copper tubes, rated to 351 psi at 200 °F and meeting ASME B16.18

  • Reduces pipe size with cast bronze durability
  • Copper-to-copper sweat connection for leak-free joints
  • Rated 351 psi at 200°F for high-pressure lines
  • Withstands -20°F to 400°F temperature extremes
  • Meets ASME B16.18 quality standard

Copper Reducing Elbow 1-1/4 x 3/4

The Nibco 707R is a cast bronze reducing elbow designed for copper tube connections. It joins a 1-1/4 inch tube to a 3/4 inch tube using a C x C solder joint configuration. This fitting suits plumbing installers who need to change direction and pipe size in a single joint. It meets ASME B16.18 standards for material and dimensions.

Replaces Separate Reducer And Elbow

Using this single fitting eliminates the need for a separate reducing coupling and a standard elbow in the same line. The jump is worth it when space is limited or when fewer solder joints reduce potential leak paths and installation time. It streamlines the transition between the two specified tube sizes. The cast bronze body handles the pressure demands of the system.

Pressure And Temperature Limits

The fitting carries a maximum pressure rating of 351 psi at 200 degrees Fahrenheit. Its operating temperature range spans from -20 degrees to 400 degrees Fahrenheit. These limits define the safe envelope for hydronic heating, cooling, and potable water lines. Exceeding either the pressure or temperature rating risks joint failure or material degradation.

How it compares

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

Price $22.99
Pricier than about 58% of the 2,955 comparable items (median $17.99).

Specifications

Product
Brand nameNibco

Questions about this item

Will the 1-3/8 In. x 7/8 In. outside diameters match my existing copper tubing?

The reducing elbow has outside diameters of 1-3/8 In. on the larger end and 7/8 In. on the smaller end for C x C solder connections.

What is the correct way to solder this C x C fitting without leaks?

Clean both tube ends and fitting sockets with emery cloth, apply flux, assemble, then heat the fitting cup evenly until solder flows by capillary action.

How often should I inspect or replace this bronze elbow in a hot-water system?

Inspect joints annually for corrosion or seepage; the cast bronze body is rated to 400 Degrees F and 351 psi at 200 Degrees F per ASME B16.18.

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