Reducer Bushing, Spigot x Slip PVC Schedule 40 1-1/4" x 3/4" (437-167)

This 1-1/4" x 3/4" Schedule 40 PVC Reducer Bushing (Spigot x Slip) provides a compact, all solvent-cement size reduction from a 1-1/4" socket fitting hub down to a continuing 3/4" socket pipe run — consolidating a moderate 1.67:1 step-down and the hub-to-pipe transition into a single all-socket flush-profile fitting body without the need for a separate reducer coupling, inline bushing chain, or multi-piece transition assembly at the reduction point. Constructed in white Schedule 40 PVC, it offers reliable performance in commercial plumbing, irrigation, and light industrial installations where a 3/4" socket pipe run must originate directly at a 1-1/4" socket fitting hub in fully all-cemented construction without any threaded connections in the transition.

The 1-1/4" spigot (male plain end) is sized to insert directly into the hub of any standard 1-1/4" socket-end fitting — tee branch outlet, cross port, coupling end, elbow outlet, or valve body — and is solvent-cemented in place to form a permanent, leak-free joint at the outer face of the hub. The 3/4" slip socket outlet accepts 3/4" PVC pipe for a permanent solvent-cement bond on the downstream reduced-diameter pipe run, completing the all-socket size transition in a single cemented fitting body. This Spigot x Slip all-socket configuration is the correct choice when both the upstream 1-1/4" assembly and the downstream 3/4" continuation are all-socket cemented PVC construction — distinct from the 438-167 (1-1/4" x 3/4" Spigot x FPT, confirmed in this catalog session), which cements into the same 1-1/4" socket hub but provides a 3/4" female-threaded outlet for a male-threaded downstream component rather than a socket pipe run, and from the 439-167 (1-1/4" x 3/4" MPT x FPT Hex Bushing, confirmed in this catalog session), which threads into a 1-1/4" female-threaded port rather than cementing into a socket hub and provides an all-threaded transition rather than an all-socket one. The 1-1/4" to 3/4" step-down is a moderate 1.67:1 reduction to one of the most widely specified branch and service line sizes in residential and light commercial systems — most commonly encountered in irrigation distribution assemblies where a 1-1/4" socket sub-main tee branch or cross port must supply a continuing 3/4" socket zone lateral or service run; in commercial plumbing socket distribution assemblies where a 1-1/4" socket main must supply a dedicated 3/4" socket branch service run off a fitting hub; and in process water assemblies where a 1-1/4" socket header hub must feed a smaller 3/4" socket distribution lateral or instrument supply run.

Rated to approximately 370 psi at 73°F (governed by the 1-1/4" spigot end), this bushing is suited for standard commercial and light industrial water distribution and irrigation service within its pressure class. NSF/ANSI 61 listing confirms suitability for potable water contact.

Apply solvent cement to the spigot exterior and the interior of the receiving 1-1/4" socket hub per ASTM D2564 procedures, inserting fully and holding briefly for initial set. Apply solvent cement separately to the 3/4" pipe end exterior and the fitting's slip socket interior before inserting the pipe fully and maintaining a quarter-turn during assembly. Allow adequate cure time on both cemented joints before pressurizing the system, and derate pressure ratings for elevated temperatures per published derating curves.

Specifications:

Industries & Applications:

• Irrigation & Water Distribution — Steps down 1-1/4" socket tee branch outlets, cross ports, manifold hubs, and valve body socket ports to a continuing 3/4" socket PVC pipe run in residential, agricultural, and municipal irrigation systems where a zone lateral, service branch, or sub-distribution run must originate directly at a 1-1/4" socket fitting hub in all-socket cemented construction — the most widely specified hub-direct socket size reduction from 1-1/4" sub-main assemblies to 3/4" zone lateral supply runs
• Commercial Plumbing — Transitions 1-1/4" socket fitting hub branch outlets and manifold ports to continuing 3/4" socket dedicated service supply, equipment feed, and branch service pipe runs in commercial building water distribution systems where all-socket PVC construction is maintained throughout and the 1-1/4" to 3/4" hub reduction supplies a dedicated socket branch run in a single compact fitting
• Industrial Process Piping — Steps down 1-1/4" socket fitting hub branch outlets and manifold ports to continuing 3/4" socket process water distribution runs, service branch lines, and instrument supply assemblies in water treatment, chemical processing, and manufacturing facilities where all-socket cemented construction is maintained at every hub reduction point throughout the system
• Drip & Micro-Irrigation Systems — Provides the all-socket hub-direct transition from a 1-1/4" socket distribution main fitting port to a continuing 3/4" socket drip emitter supply header or micro-irrigation sub-main in drip and micro-irrigation systems where all-socket cemented construction is maintained throughout and the 1-1/4" to 3/4" step-down must occur at a fitting hub location
• Water Treatment & Aquaculture — Used at 1-1/4" socket tee branches, cross ports, and manifold hub outlets where the downstream 3/4" socket run must be supplied in a compact all-cemented fitting with NSF/ANSI 61 compliance required throughout the all-socket assembly
• Chemical Handling — Delivers a corrosion-resistant all-socket hub-to-run transition in systems conveying acids, caustics, fertilizer solutions, and other fluids incompatible with metal fittings or threaded transitions, where a 3/4" socket downstream run must originate directly at a 1-1/4" socket fitting hub without a threaded interface in the reduction assembly