Reducer Bushing, Spigot x Slip PVC Schedule 40 2-1/2" x 2" (437-292)

This 2-1/2" x 2" Schedule 40 PVC Reducer Bushing (Spigot x Slip) provides a compact, all solvent-cement near-full-size transition from a 2-1/2" socket-end fitting hub down to a 2" PVC pipe run, consolidating a one-step diameter reduction into a single fitting body without the need for threaded connections, additional couplings, or multi-piece transition assemblies. Constructed in white Schedule 40 PVC, it offers reliable performance in commercial plumbing, irrigation, and light industrial installations where a corrosion-resistant, all socket-to-socket near-full-size diameter reduction is required at an existing large-diameter fitting port and no threaded interface is needed at the transition point.

The 2-1/2" spigot (male plain end) is sized to insert directly into the hub of any standard 2-1/2" socket-end fitting — tee, cross, coupling, elbow, or valve body — and is solvent-cemented in place to form a permanent, leak-free joint at the outer face. The 2" slip socket interior accepts a 2" PVC pipe for a permanent solvent-cement bond on the reduced-diameter outlet side, completing the near-full-size transition in a single compact body. This Spigot x Slip configuration is the all-solvent-cement approach to socket reducing at this size combination, and is the correct choice when both the upstream 2-1/2" assembly and the downstream 2" run are entirely socket-based PVC systems with no threaded interfaces required at the transition point. It should not be confused with any 438 series mixed-connection counterpart at this size (Spigot x FPT, if stocked), which would provide a 2" female-threaded outlet for connecting to male NPT-threaded components directly off the fitting hub, or with MPT x FPT hex bushings, which are installed entirely within threaded assemblies. The 2-1/2" to 2" step-down is a modest 1.25:1 near-full-size reduction — the least aggressive confirmed in the 2-1/2" spigot inlet 437 sub-series and more moderate than the significant 437-288 (2-1/2" x 3/4" branch) — driven primarily by the need to match downstream 2" pipe sizing rather than by any significant hydraulic flow management requirement; most commonly encountered where a 2" socket pipe run or sub-main must continue off a 2-1/2" socket fitting hub in an all-cemented assembly at a near-full-size step-down transition point.

Rated to approximately 160 psi at 73°F (governed by the 2-1/2" spigot end), this bushing is suited for standard commercial and light industrial water distribution and irrigation service within its pressure class. Its PVC composition provides excellent resistance to corrosion, scale, chlorinated water, and a broad range of chemical exposures, making it a reliable long-term alternative to metal reducing bushings in moisture-prone or chemically active environments. NSF/ANSI 61 listing confirms suitability for potable water contact.

Apply solvent cement to the spigot exterior and the interior of the receiving 2-1/2" socket hub per ASTM D2564 procedures, inserting fully and holding briefly for initial set. Apply solvent cement separately to the 2" pipe end exterior and the fitting's slip socket interior before inserting the pipe fully and maintaining a quarter-turn during assembly for even cement distribution. Complete each cemented joint in sequence and allow adequate cure time before pressurizing the system. Derate pressure ratings for elevated temperatures per published derating curves.

Specifications:

Industries & Applications:

• Irrigation & Water Distribution — Steps down 2-1/2" socket-end mainline tees, crosses, and manifold assemblies to 2" PVC socket pipe runs at sub-main branch points, pump discharge transitions, and distribution step-down locations in large-diameter agricultural and municipal irrigation systems where an all solvent-cement near-full-size reduction is required at the socket fitting port
• Commercial Plumbing — Reduces 2-1/2" socket-end tee branches and fitting ports to 2" PVC pipe runs at distribution manifolds, riser transitions, and sub-main branch connections in commercial building water distribution systems where all-socket PVC construction is specified throughout and a near-full-size one-step reduction is required at the branch tap location
• Industrial Process Piping — Provides an all solvent-cement near-full-size socket transition at pump suction headers, process water distribution step-downs, and equipment feed connections in water treatment, chemical processing, and manufacturing facilities where a 2-1/2" socket assembly must supply a 2" socket pipe run without introducing threaded interfaces at the transition point
• Chemical Handling — Delivers a corrosion-resistant, all solvent-cement near-full-size socket reduction in large-diameter systems conveying acids, caustics, fertilizer solutions, and other fluids incompatible with metal fittings, where a 2" socket pipe run must continue off a 2-1/2" socket assembly in an all-cemented configuration without any threaded interface at the transition
• Water Treatment & Aquaculture — Used at filter manifold step-down ports, recirculating system header transitions, and tank distribution assemblies where a 2-1/2" socket fitting must supply a 2" PVC pipe run at near-full flow capacity to a treatment component, pump feed, or distribution branch requiring NSF/ANSI 61 compliance and an all-cemented assembly throughout
• HVAC & Mechanical Systems — Transitions 2-1/2" socket-end fitting ports to 2" PVC pipe runs at near-full-size distribution step-downs, pump suction assemblies, and equipment feed connections on cooling tower supply headers, chilled water distribution mains, and chemically treated water systems within the Schedule 40 pressure class