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White ABS reducing coupling, Schedule 40, 3 to 4 inch socket ends

Value Brand

Value Brand ABS Reducing Coupling 3 in 4 in Schedule 40

SKU CH-67NA-GAY9G

ABS Schedule 40 reducing coupling joins 3-inch and 4-inch pipe with socket ends for gravity-flow systems

  • Reduces 4 in to 3 in pipe with Schedule 40 ABS durability
  • Female socket ends on both sides simplify solvent-weld installation
  • Handles -20 °F to 140 °F for cold and hot gravity flow
  • 4 3/16 in overall length fits tight drainage runs
  • No seal included — use compatible solvent cement for leak-free joints

Reducing Coupling 3 in 4 in Schedule 40

This ABS reducing coupling joins a 3 in pipe to a 4 in pipe in gravity-flow systems. The socket ends accept pipe with outside diameters of 3 1/2 in and 4 1/2 in. It is rated for a maximum operating temperature of 140 Degrees F. The overall length is 4 3/16 in.

Upgrade From Smaller Or Mismatched Fittings

The fitting replaces a straight coupling or a bushing that cannot bridge the two pipe sizes. The jump is worth it when the drainage layout changes from 3 in to 4 in and a single solvent-weld joint is preferred over multiple adapters. Schedule 40 wall thickness matches standard DWV pipe.

Capacity And Headroom

The coupling handles gravity-flow drainage up to the 140 Degrees F limit. It runs out when pressure exceeds gravity head or when service temperatures rise above the rated maximum. The socket depth provides full engagement for both pipe sizes without a separate seal.

Highlights

  • Reduces 4 in to 3 in pipe with Schedule 40 ABS durability
  • Female socket ends on both sides simplify solvent-weld installation
  • Handles -20 °F to 140 °F for cold and hot gravity flow
  • 4 3/16 in overall length fits tight drainage runs
  • No seal included — use compatible solvent cement for leak-free joints

Specifications

BrandZORO SELECT

Questions about this item

What pipe outside diameters does the 3 in by 4 in ABS reducing coupling accept?

The coupling fits 3 1/2 in and 4 1/2 in pipe outside diameters with socket ends on both sides.

Which installation step is most often missed when joining this Schedule 40 ABS reducing coupling?

Applying ABS-specific solvent cement to both socket ends and the pipe before pushing them together is the step most often skipped.

When should the ABS reducing coupling be inspected or replaced after installation?

Inspect joints if the system sees temperatures near the 140 °F upper limit or after any impact that could crack the Schedule 40 wall.

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