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Zoro Select 221330 cast iron reducing wye fitting 4 x 5 inches

Zoro Select

Zoro Select 221330 Reducing Wye 4 x 5 Pipe

SKU CH-Q4QP-E8GFJ

Connects 4-inch and 5-inch cast iron pipes with a female socket reducing wye

  • Reducing wye connects 4 in and 5 in pipes
  • Female socket ends allow solvent-weld joints
  • Cast iron construction resists corrosion and impact
  • Zoro Select brand backed by manufacturer quality
  • First listed in 2024 for current specification

Application

The Zoro Select 221330 reducing wye connects a four-inch branch to a five-inch main line in cast iron drainage systems. It is intended for plumbers and contractors assembling or repairing soil and waste stacks where a change of diameter is required at a junction. The female socket ends accept standard spigot pipe or fittings without additional adapters.

Installation limits

The fitting uses a hub-and-spigot joint method that relies on lead, oakum or modern compression gaskets to seal. Joint integrity depends on correct pipe preparation and packing technique; the casting itself does not incorporate a mechanical restraint or integrated gasket. Installers must verify local code acceptance for the chosen sealing method before assembly.

Sizing constraint

The four-inch by five-inch configuration fixes the branch and main diameters for the entire assembly. Systems requiring a different branch size or a straight-through connection cannot use this fitting. Buyers who need a larger branch diameter or a reducing combination not matching these two dimensions must select an alternative wye.

Highlights

  • Reducing wye connects 4 in and 5 in pipes
  • Female socket ends allow solvent-weld joints
  • Cast iron construction resists corrosion and impact
  • Zoro Select brand backed by manufacturer quality
  • First listed in 2024 for current specification

Specifications

BrandZORO SELECT

Questions about this item

Should I choose the 4-inch or 5-inch side for the main line?

The reducing wye connects a 5-inch pipe to a 4-inch branch, so the larger opening suits the main run and the smaller opening feeds the lateral line.

How does the 4-inch by 5-inch size affect flow in a real drainage system?

The 4-inch branch reduces cross-section from the 5-inch inlet, which increases velocity in the smaller leg while keeping the main line capacity intact.

What does the female socket connection mean for joining cast iron pipe?

The female socket accepts plain-end cast iron pipe of matching diameter, allowing a hub-and-spigot joint sealed with gasket or lead and oakum.

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