Reducer Bushing, Sp x Slip PVC Schedule 40 6" x 2-1/2" (437-529)

The 437-529 is a PVC Schedule 40 reducer bushing with a 6" spigot (male plain end) inlet and a 2-1/2" slip (socket) outlet, designed to reduce a 6" socket fitting or pipe hub down to a 2-1/2" solvent-welded pipe connection within a single compact fitting. The 6" spigot inlet inserts directly into any standard 6" Schedule 40 socket fitting or pipe hub and is joined with solvent cement and primer per ASTM D2564, while the 2-1/2" slip outlet accepts a standard 2-1/2" PVC pipe end joined the same way — creating a fully solvent-welded, permanent, pressure-rated reducing transition with no threaded connections at either end.

Manufactured from rigid PVC compound conforming to ASTM D1784 cell classification requirements, this bushing delivers the corrosion resistance, chemical compatibility, and long service life associated with Schedule 40 PVC across a wide range of commercial, industrial, and municipal piping systems. The Schedule 40 wall thickness provides reliable pressure-rated performance for both pressurized distribution systems and gravity-flow applications, and the all-PVC construction resists corrosion, biological growth, and a broad range of chemical media throughout its service life.

The 437-529 occupies a distinct position within the 6" spigot x slip reducer bushing series — the 2-1/2" outlet is a meaningful mid-range reduction from the 6" inlet, larger than the small-service reductions of the 437-524 (3/4"), 437-525 (1"), and 437-526 (1-1/4") but smaller than the near-full-diameter transitions at larger outlet sizes. This makes the 437-529 well suited for distribution manifolds, pump station assemblies, and irrigation headers where a 6" mainline socket must be reduced to a 2-1/2" branch or service connection that carries genuine moderate flow volume — not merely a tap or instrument port, but a real secondary circuit or lateral supply line requiring a mid-range pipe size. The spigot x slip configuration produces two permanent solvent-welded joints, making this bushing the appropriate choice when the reduction point is a fixed, long-term installation that will not require future disassembly. For applications requiring a serviceable threaded reduction, a threaded bushing in the MPT x FPT configuration should be considered instead.

Specifications:

Industries & Applications:

• Irrigation & Agriculture — Reducing 6" mainline socket fittings and distribution manifold ports to 2-1/2" lateral supply connections in large-scale pressurized irrigation systems where the branch carries moderate flow volume to a dedicated zone or sector circuit
• Municipal Water & Wastewater — Reducing 6" socket connections to 2-1/2" service branches at pump stations, treatment facility manifolds, and distribution system assemblies where a mid-range secondary service connection is required off a large-diameter mainline fitting
• Industrial Process Piping — Single-fitting diameter reductions in chemical distribution, cooling water, and process fluid systems where a 6" socket fitting or manifold port must be reduced to a 2-1/2" branch connection without intermediate fittings or stacked reducers
• Commercial Plumbing — Mechanical room distribution manifolds where a 6" supply header must be reduced to 2-1/2" for secondary circuit feeds, equipment connections, or parallel loop supply lines requiring mid-range pipe capacity
• Fire Suppression — Reducing 6" riser and main socket fittings to 2-1/2" branch mains or standpipe connections in fire suppression systems where the 2-1/2" branch must carry substantial flow to hose connections or branch circuit headers
• Aquaculture & Water Treatment — Reducing large-diameter socket manifold connections to 2-1/2" secondary circuit supply lines in recirculating aquaculture and water treatment systems where the branch must support moderate-to-high flow capacity