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White Schedule 40 PVC reducer bushing, 4-inch spigot to 3-inch slip (socket) connection, front view on white background, molded finish and flange visible.

437-422 Reducer Bushing — Schedule 40 PVC, 4" x 3" Spigot x Slip

Brand: PVC
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$16.95
$12.71
SKU 437422
In Stock (93)

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Durable Schedule 40 PVC reducer bushing designed to join a 4" spigot to a 3" slip (socket) line. Molded from white PVC for corrosion resistance and long service life, this bushing is commonly used in potable water, irrigation, pool & spa, and general pressure plumbing systems.

  • Standard: Schedule 40 PVC construction for pressure applications.
  • Connections: 4" spigot (male) x 3" slip/socket (female) for solvent-weld installation.
  • Material: White PVC, injection molded for consistent fit and finish.
  • Certifications: Meets common industry standards (ASTM listings) and suitable for potable water systems.
  • Temperature: Rated for typical cold-water applications up to about 140°F (check system limits).
  • Installation: Use appropriate primer and solvent cement for a permanent, leak-resistant joint.

This reducer bushing provides a simple, reliable means to reduce pipe size while maintaining a solvent-welded pressure connection. Its lightweight PVC construction resists corrosion and chemical attack, making it a practical choice for residential and commercial plumbing where Schedule 40 PVC fittings are specified. Verify compatibility with your system (pipe schedule and solvent-cement type) before installation and follow local plumbing codes.

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Frequently Asked Questions

What piping does this reducer bushing work with?
Designed for Schedule 40 PVC systems; pairs a 4" spigot to a 3" slip/socket pipe with solvent-weld connections.
How do I install this reducer bushing?
Clean, primer, then apply solvent cement to spigot and socket per cement manufacturer instructions for a permanent joint.
Is this fitting suitable for potable water?
Yes — manufactured to common PVC/ASTM standards and used in potable water systems when installed per code.
What temperature range can this bushing handle?
Intended for typical cold-water and pool applications; commonly rated to about 140°F. Confirm for specific systems.