Reducer Bushing, Spigot x Slip PVC Schedule 40 1" x 1/2" (437-130)

This 1" x 1/2" Schedule 40 PVC Reducer Bushing (Spigot x Slip) provides a compact, all solvent-cement size reduction from a 1" socket fitting hub down to a continuing 1/2" socket pipe run — consolidating a meaningful 2:1 step-down and the hub-to-pipe transition into a single all-socket 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 1/2" socket pipe run must originate directly at a 1" socket fitting hub in all-socket cemented construction throughout — the most widely specified all-socket hub-to-pipe size reduction at the dominant 1" irrigation grid and distribution header diameter.

The 1" spigot (male plain end) is sized to insert directly into the hub of any standard 1" socket-end fitting — tee branch outlet, cross port, coupling end, elbow outlet, side outlet elbow port, or valve body — and is solvent-cemented in place to form a permanent, leak-free joint at the outer face of the hub. The 1/2" slip socket outlet accepts 1/2" 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" assembly and the downstream 1/2" continuation are all-socket cemented PVC construction — the first and most critical distinction in a uniquely well-documented size combination. At the 1" x 1/2" nominal size, four confirmed Schedule 40 fitting entries serve related but distinct assembly functions: 437-130 (this entry, Spigot x Slip — spigot cements into 1" socket hub, slip outlet continues a 1/2" socket pipe run — all-socket throughout), 438-130 (Spigot x FPT — spigot cements into 1" socket hub, FPT outlet serves a 1/2" male-threaded component, confirmed in this session), 439-130 (MPT x FPT Hex Bushing — MPT exterior threads into a 1" female-threaded port, not a socket hub, confirmed in this session), and 435-130 (Slip x FPT Reducing Female Adapter — slip socket accepts a 1" pipe end exterior rather than inserting into a hub, confirmed in this session); additionally the 837-130 (Schedule 80 Spigot x Slip, confirmed in this session) is the direct higher-pressure parallel to this entry. Among these five, 437-130 is the correct choice specifically and exclusively when the upstream 1" connection is a socket fitting hub and the downstream 1/2" continuation is a cemented socket pipe run — maintaining all-socket assembly integrity from hub to pipe throughout. At 1", the 1/2" socket outlet most commonly feeds a continuing 1/2" socket drip emitter supply lateral or small-bore zone run departing directly from a 1" socket tee branch, cross port, or manifold hub; a 1/2" socket instrument supply or service branch run off a 1" socket process water header hub; or a dedicated 1/2" socket fixture or equipment supply run off a 1" socket main fitting hub in commercial plumbing assemblies.

Rated to approximately 450 psi at 73°F (governed by the 1" 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" socket hub per ASTM D2564 procedures, inserting fully and holding briefly for initial set. Apply solvent cement separately to the 1/2" 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" socket tee branch outlets, cross ports, manifold hubs, side outlet elbow ports, and valve body socket connections to a continuing 1/2" socket PVC pipe run in residential, agricultural, and municipal irrigation systems where a drip emitter supply lateral, small-bore zone distribution run, or dedicated service branch must originate directly at a 1" socket fitting hub in all-socket cemented construction without any threaded transition at the reduction point — the most common all-socket hub-to-run size reduction at the dominant 1" irrigation grid header diameter
• Drip & Micro-Irrigation Systems — Provides the standard all-socket hub-direct transition from a 1" socket distribution main fitting port to a continuing 1/2" socket drip emitter supply lateral or micro-irrigation sub-header at every grid header tap point in drip and micro-irrigation systems where all-socket cemented construction is maintained throughout and the 1" to 1/2" step-down must occur at a fitting hub location without a separate reducer coupling downstream
• Commercial Plumbing — Transitions 1" socket fitting hub branch outlets and manifold ports to continuing 1/2" socket dedicated fixture supply, equipment feed, and small-bore service pipe runs in commercial building water distribution systems where all-socket PVC construction is maintained throughout and the 2:1 hub reduction supplies a dedicated small-bore socket branch run in a single compact fitting body
• Industrial Process Piping — Steps down 1" socket fitting hub branch outlets and manifold ports to continuing 1/2" socket process water distribution runs, instrument supply lines, and small-bore service branch assemblies in water treatment, chemical processing, and manufacturing facilities where all-socket cemented construction is maintained at every hub reduction point and the 1/2" outlet supplies dedicated instrument and service socket runs throughout the system
• Water Treatment & Aquaculture — Used at 1" socket tee branches, cross ports, side outlet elbow ports, and manifold hub outlets where the downstream 1/2" socket run must be supplied in a single all-cemented compact fitting body 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 1/2" socket downstream run must originate directly at a 1" socket fitting hub without any threaded interface in the reduction assembly