Reducer Bushing, Spigot x FPT PVC Schedule 40 1" x 1/2" (438-130)

This 1" x 1/2" Schedule 40 PVC Reducer Bushing (Spigot x FPT) provides a compact mixed-connection transition from a 1" socket fitting hub down to a 1/2" female NPT-threaded outlet, consolidating a meaningful 2:1 diameter reduction and a socket-to-thread material transition into a single fitting body without the need for a separate inline reducer coupling, hex bushing, or multi-piece transition assembly. Constructed in white Schedule 40 PVC, it offers reliable performance in commercial plumbing, irrigation, and light industrial installations where a 1/2" male-threaded service component, solenoid valve inlet, chemical injection port, drip emitter manifold stub, or dedicated small-bore service fitting must be installed directly at a 1" socket assembly port location — the most widely specified small-bore service connection outlet size at the dominant all-socket irrigation and distribution grid 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" FPT interior accepts any standard 1/2" male NPT-threaded fitting, solenoid valve inlet, chemical injection nipple, instrument connection, or service component for a pressure-tight mechanical connection when made up with thread sealant or PTFE tape. The 1/2" FPT outlet is the most widely specified small-bore service connection size in residential and light commercial PVC irrigation and plumbing systems — making 438-130 the likely highest-demand entry in the 1" spigot inlet 438 sub-series and the correct single-fitting solution wherever a 1" socket assembly must supply a 1/2" male-threaded service component at a tee branch, cross port, or manifold hub. This Spigot x FPT mixed-connection configuration should not be confused with the 439-130 (1" x 1/2" MPT x FPT Hex Bushing, confirmed in this catalog session), which threads into a 1" female-threaded port rather than cementing into a 1" socket hub — the seventh confirmed case in this catalog session of a parallel 438/439 same-size pair where the inlet-type distinction is the sole differentiator; nor with 838-130 (1" x 1/2" Schedule 80 Spigot x FPT Bushing, confirmed in this session), which is the direct dark gray Schedule 80 counterpart at the same size and connection type; nor with 435-130 (1" x 1/2" Slip x FPT Reducing Female Adapter, confirmed in the immediately preceding session entry), which accepts a 1" PVC pipe end in its slip socket inlet rather than inserting into a 1" socket fitting hub interior — both provide the same 1/2" FPT outlet but from fundamentally different upstream assembly geometries; nor with any 437 series all-slip counterpart (Spigot x Slip, 1" x 1/2" if stocked), which provides a 1/2" socket outlet for a cemented pipe run rather than connecting a male-threaded service component.

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. On the 1/2" FPT end, use a quality pipe thread sealant or PTFE tape on the male NPT threads of the mating downstream component before engagement. Avoid over-torquing — PVC threads require hand-tight plus one to two turns. Allow adequate cure time on the cemented spigot joint before pressurizing the system, and derate pressure ratings for elevated temperatures per published derating curves.

Specifications:

Industries & Applications:

• Irrigation & Water Distribution — Provides 1/2" male-threaded solenoid valve inlets, drip emitter manifold stubs, small-bore service line taps, and dedicated branch connections directly at 1" socket tee branches, cross ports, and manifold hubs in residential, agricultural, and municipal irrigation systems where the 1" all-socket mainline or grid header assembly must supply 1/2" threaded service components at valve station and distribution manifold hub locations — the most common small-bore socket-to-threaded service tap at the dominant 1" irrigation grid header diameter
• Drip & Micro-Irrigation Systems — Provides the standard hub-direct socket-to-threaded transition for 1/2" male-threaded drip manifold inlets, pressure regulator connections, filter housing ports, and zone valve body connections at 1" socket tee branch and cross port hubs in drip and micro-irrigation systems where the 1" all-socket grid assembly must serve 1/2" threaded downstream distribution components at each hub tap location
• Commercial Plumbing — Incorporates 1/2" male-threaded branch service connections, pressure gauge taps, ball valve inlets, and instrument stubs directly at 1" socket fitting hub outlets in commercial building water distribution systems where small-bore 1/2" threaded service connections must be tapped off 1" socket assembly ports without an intermediate adapter chain at the hub port location
• Industrial Process Piping — Transitions 1" socket fitting hub branch outlets and manifold ports to 1/2" male-threaded instrument connections, chemical injection ports, sampling valves, and small-bore service branch components in water treatment, chemical processing, and manufacturing facilities where 1/2" threaded downstream service components must be tapped directly off 1" socket assembly ports
• Water Treatment & Aquaculture — Used at 1" socket tee branches, cross ports, and manifold hub outlets where 1/2" male-threaded chemical dosing ports, instrument connections, treatment equipment inlets, and small-bore service stubs must be incorporated directly at socket fitting hub locations with NSF/ANSI 61 compliance required throughout the all-socket assembly
• Chemical Handling — Delivers a corrosion-resistant mixed-connection socket-to-thread transition at 1" socket fitting hub ports in systems conveying acids, caustics, fertilizer solutions, and other fluids incompatible with metal fittings, where 1/2" male-threaded chemical injection stubs, metering component inlets, and small-bore service line taps must be incorporated at socket assembly ports without metal adapter chains