Reducer Bushing, Slip x Slip PVC Schedule 40 12" x 4" (437-664)

The 12" x 4" PVC Schedule 40 Reducer Bushing (Part No. 437-664) provides a reliable, large-diameter reduction solution for pressure piping systems that require a direct, inline transition from 12-inch to 4-inch pipe without the need for additional fittings or couplings. Manufactured from virgin PVC compound to ASTM D2466 standards, this slip-by-slip bushing seats directly inside a 12" socket fitting, while the spigot end inserts into a standard 4" socket — keeping your system compact, leak-resistant, and structurally sound.

Built for industrial-scale applications, this bushing is ideal where large flow distribution lines branch into smaller lateral runs, where main supply headers tie into process sub-lines, or where space constraints demand a clean, single-piece reduction. Its solvent-weld connection on both ends delivers a permanent, pressure-rated joint compatible with standard PVC cements and primers.

PVC Schedule 40 construction offers excellent resistance to corrosion, scale, and a broad range of chemicals — making this fitting well-suited to water distribution, irrigation infrastructure, industrial process piping, and municipal systems. The NSF/ANSI 61 certification confirms it is listed for potable water contact, expanding its usability across both water utility and food/beverage-adjacent applications.

Specifications:

Note: Pressure ratings decrease as pipe diameter increases. Consult engineering specs for system design at full operating conditions.

Industries & Applications:

• Municipal Water Distribution — Transitions from large transmission mains to smaller service laterals or meter connections
• Industrial Process Piping — Reduces header supply lines to branch process feeds in chemical, pharmaceutical, or manufacturing plants
• Irrigation & Agricultural Systems — Connects large-diameter mainlines to zone distribution piping in commercial or large-scale agricultural irrigation
• Wastewater & Stormwater Infrastructure — Used in gravity-flow and low-pressure drainage systems requiring large-to-small reductions
• Aquaculture & Water Treatment — Integrates into recirculating systems and filtration manifolds where flow division is required
• Fire Suppression Support Piping — Non-pressure-rated fire system use only; verify with local code and engineer
• HVAC Chilled Water Systems — Suited for non-corrosive fluid handling in mechanical room piping