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White injection-molded PVC reducer bushing (Lasco 437-421), 4-inch spigot to 2-1/2-inch socket, Schedule 40, front angle on white background.

Lasco 437-421 PVC Reducer Bushing 4" x 2-1/2" Spigot x Slip

Brand: PVC
Save 25%
$16.53
$12.40
SKU 437421
In Stock (18)

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Durable Lasco PVC reducer bushing for reliable pipe transitions. Injection-molded Schedule 40 PVC provides corrosion resistance and consistent performance for irrigation, pool, and general plumbing applications. Designed to adapt 4" spigot connections to 2-1/2" slip/socket fittings with a flush, secure fit.

  • Material & construction: Injection-molded PVC, white, Schedule 40 for durability and chemical resistance.
  • Size & connection: 4" spigot x 2-1/2" socket (slip) — nominal IPS sizes; approximate overall length 2-7/16".
  • Standards & ratings: Manufactured to common industry standards (ASTM D-2466); rated for typical PVC pressure classes and temperatures up to 140°F; pressure varies by size and temperature.
  • Installation: Solvent-weld installation — use PVC primer and solvent cement for a secure, watertight joint. Not for continuous hot-water beyond rated temperature.

Choose this reducer bushing when you need a dependable, easy-to-install transition from 4" to 2-1/2" PVC pipe. Its Schedule 40 wall thickness and proven PVC construction make it suitable for outdoor, underground, and pool plumbing applications where standard pressure and temperature limits are observed.

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Frequently Asked Questions

What size connections does this reducer bushing fit?
Fits a 4" spigot to a 2-1/2" socket (slip) — nominal IPS sizes for standard Schedule 40 PVC piping.
How should I install this PVC reducer bushing?
Install by solvent-welding: clean, apply PVC primer, then use PVC solvent cement for a secure, watertight joint.
What temperature and pressure limits apply to this fitting?
Made to Schedule 40 PVC standards and typically rated to 140°F; pressure class varies by size and temperature (refer to spec sheet).

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