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White PVC 90-degree street elbow with hub and spigot ends

Mueller Industries, Inc.

Mueller Industries, Inc. 1WKB6 4 in PVC DWV 90° Hub x Spigot Street Elbow

SKU CH-WZ3V-V4PKK MPN 1WKB6

A 4-inch Schedule 40 PVC drain fitting that turns a hub-to-spigot joint 90 degrees, rated to 140 °F and meeting ASTM D1784 cell class 12454

  • TypeDrain Components
  • ColorWhite
  • Schedule 40 PVC rated for 140 °F service
  • Hub-to-spigot 90° turn simplifies tight drain routing
  • White Schedule 40 PVC meets ASTM D1784 cell class 12454
  • Non-pressure DWV fitting avoids pressure-rating confusion
  • Mueller Industries 1WKB6 delivers code-compliant drainage performance

4 in PVC DWV Street Elbow

The Mueller Industries 1WKB6 is a Schedule 40 PVC fitting designed for drain, waste and vent systems. Its 90-degree hub-by-spigot configuration connects a 4-inch pipe to a fitting hub in a single sweep. The white fitting meets ASTM D1784 cell class 12454 and is rated for temperatures up to 140 degrees F. It is not rated for pressure applications.

Solvent-weld installation requires clean.

Apply primer and cement to both the spigot end and the inside of the hub for a permanent joint. The street-elbow layout lets you join pipe directly to a fitting without a short nipple, saving space in tight runs. Ensure the pipe is fully seated to avoid leaks; the fitting cannot be disassembled once the cement sets. No threading or mechanical fasteners are used.

Verify your system uses 4-inch Schedule 40 DWV pipe

Confirm the existing piping is non-pressure PVC drain, waste and vent material of the same schedule and diameter. The hub accepts a 4-inch pipe spigot while the spigot end inserts into a 4-inch fitting hub. Do not use this elbow for pressurized water lines, hot-water supply above 140 degrees F, or any application requiring a pressure rating.

Highlights

  • Schedule 40 PVC rated for 140 °F service
  • Hub-to-spigot 90° turn simplifies tight drain routing
  • White Schedule 40 PVC meets ASTM D1784 cell class 12454
  • Non-pressure DWV fitting avoids pressure-rating confusion
  • Mueller Industries 1WKB6 delivers code-compliant drainage performance

Specifications

TypeDrain Components
ColorWhite
BrandMueller Industries
Model1WKB6

Questions about this item

How can I verify the elbow is installed correctly after assembly?

A proper joint shows the hub fully seated over the spigot with solvent cement visible around the entire circumference and the 90-degree turn aligned to your drainage layout.

What components are included and what must I supply?

The box contains the white Schedule 40 PVC street elbow only; you must provide PVC primer, solvent cement, and any additional pipe or fittings required for the 4-inch DWV run.

Which version of this fitting should I select for a standard residential drain line?

Choose the 4-inch Schedule 40 hub-by-spigot street elbow rated to 140 degrees F and meeting ASTM D1784 cell class 12454 for typical non-pressure drainage installations.

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