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Copper return bend fitting with two cup ends, smooth metallic finish

Nibco, Inc.

Nibco, Inc. Return Bend Wrot Copper 1-1/4" C x C 638

SKU CH-X3RD-DECQE

A wrot copper return bend with cup-to-cup sweat connections for 1-1/4 in tube, rated to 351 psi at 200 °F and 400 °F maximum temperature

  • Handles potable water, air and gas systems with a single fitting
  • Wrot copper construction resists corrosion for long service life
  • Sweat cup connections create leak-free joints on 1-1/4 in copper tube
  • Rated to 351 psi at 200 °F for demanding pressure applications
  • Withstands temperatures up to 400 °F in hot-water and steam lines

Copper Return Bend for 1-1/4 in Tube

This Nibco wrot-copper return bend joins two 1-1/4 in copper tubes with cup-to-cup sweat connections. It suits potable water, air and gas lines in residential or light-commercial plumbing. The fitting carries model number 638 and is supplied new.

Pressure and Temperature Limits

The fitting withstands up to 351 psi at 200 degrees F and a maximum operating temperature of 400 degrees F. These ratings apply to sustained service rather than short bursts, so the bend remains reliable in continuously pressurised hot-water or compressed-air circuits.

Wrot Copper Construction and Cup Ends

Wrot copper provides a uniform wall thickness that resists splitting during sweating and resists corrosion in water supplies. Both cup ends accept 1-1/4 in tube with a 1-3/8 in outer diameter, allowing standard solder joints without adapters. The return-bend shape reverses flow direction in a compact radius for tight piping layouts.

Highlights

  • Handles potable water, air and gas systems with a single fitting
  • Wrot copper construction resists corrosion for long service life
  • Sweat cup connections create leak-free joints on 1-1/4 in copper tube
  • Rated to 351 psi at 200 °F for demanding pressure applications
  • Withstands temperatures up to 400 °F in hot-water and steam lines

Specifications

BrandNibco

Questions about this item

Does the Nibco 638 return bend generate any noise or heat during continuous water flow?

The wrot copper fitting has no moving parts and produces no operational noise or heat; it simply conveys fluid within its 351 psi at 200 °F rating.

What existing piping must I have to sweat this 1-1/4" C x C return bend into place?

You need 1-1/4" copper tubing with a 1-3/8" outside diameter on both sides, plus flux, lead-free solder and a torch for sweat joints.

Will the 638 return bend mate with older copper pipe that has the same nominal size?

Yes, it fits any 1-1/4" copper tube with a 1-3/8" OD, so legacy piping of that dimension joins directly.

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