Reducer Bushing, Spigot x Slip PVC Schedule 40 1-1/2" x 3/4" (437-210)

This 1-1/2" x 3/4" Schedule 40 PVC Reducer Bushing (Spigot x Slip) provides a compact, all solvent-cement size reduction from a 1-1/2" socket fitting hub down to a continuing 3/4" socket pipe run, consolidating the 2:1 step-down and the hub-to-pipe transition into a single flush-profile fitting body that maintains all-socket cemented construction throughout the assembly. Constructed in white Schedule 40 PVC, it offers reliable performance in commercial plumbing, irrigation, and light industrial applications where a 3/4" socket pipe run must originate at a 1-1/2" socket fitting hub port — at a tee branch outlet, cross port, coupling end, or manifold socket hub — without introducing a threaded interface, a separate reducer coupling in the downstream run, or additional intermediate fittings at the reduction point.

The 1-1/2" spigot (male plain end) is sized to insert directly into the hub of any standard 1-1/2" 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, continuing the all-socket assembly at 3/4" from the point of the hub reduction. This all-socket Spigot x Slip configuration is the correct choice when both the upstream 1-1/2" fitting hub and the downstream 3/4" pipe run are all-socket PVC — distinct from the 438-210 (1-1/2" x 3/4" Spigot x FPT, confirmed in this catalog session), which provides a 3/4" female-threaded outlet for connecting a male-threaded downstream component rather than continuing a 3/4" socket pipe run, and from the 439-210 (1-1/2" x 3/4" MPT x FPT Hex Bushing, confirmed in this catalog session), which threads into a 1-1/2" female-threaded port rather than cementing into a 1-1/2" socket hub. The three fittings — 437-210, 438-210, and 439-210 — represent the complete confirmed parallel at this exact 1-1/2" x 3/4" size combination across all-socket, socket-to-thread, and all-threaded connection types; the correct choice among them is determined entirely by the connection type of the upstream 1-1/2" port and the downstream 3/4" component. At 1-1/2" x 3/4", this all-socket spigot x slip bushing most commonly appears at 1-1/2" tee branch outlets, cross ports, and manifold socket hubs throughout irrigation mainline and sub-main distribution assemblies, commercial plumbing branch supply systems, and light industrial process water headers where the 1-1/2" socket main must supply a continuing 3/4" socket lateral, sub-distribution run, or dedicated service line at a socket fitting hub port without any threaded interface in the downstream assembly.

Rated to approximately 330 psi at 73°F (governed by the 1-1/2" 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. NSF/ANSI 61 listing confirms suitability for potable water contact.

Apply solvent cement to the spigot exterior and the interior of the receiving 1-1/2" 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 for even cement distribution. 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 — Transitions 1-1/2" socket tee branch outlets, cross ports, and manifold socket hubs to continuing 3/4" socket lateral, zone sub-main, and secondary distribution pipe runs in agricultural and municipal irrigation systems where the 1-1/2" to 3/4" all-socket step-down at a fitting hub port is the most common hub-reduction combination encountered throughout 1-1/2" mainline and sub-main all-socket irrigation distribution assemblies
• Commercial Plumbing — Steps down 1-1/2" socket fitting hub branch outlets to continuing 3/4" socket dedicated fixture supply, branch service, and equipment feed runs in commercial building water distribution systems where all-socket PVC construction is maintained throughout and the 3/4" downstream socket run must originate directly at a 1-1/2" socket tee branch or manifold hub port without a threaded interface
• Industrial Process Piping — Transitions 1-1/2" socket fitting hub branch outlets and manifold ports to continuing 3/4" 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 Schedule 40 PVC construction is maintained at every hub reduction point and the 3/4" downstream run continues in all-socket cemented construction
• Chemical Handling — Provides a corrosion-resistant all-socket hub-to-pipe size reduction at 1-1/2" socket fitting hub ports in systems conveying acids, caustics, fertilizer solutions, and other fluids incompatible with metal fittings or threaded interfaces, where the 3/4" downstream socket run must originate at the hub reduction point in fully cemented all-socket construction without any threaded connections throughout the assembly
• Water Treatment & Aquaculture — Used at 1-1/2" socket tee branches, cross ports, and manifold hub outlets where a continuing 3/4" socket pipe run must originate at the hub with all-socket construction maintained and NSF/ANSI 61 compliance required throughout the all-cemented assembly
• HVAC & Mechanical Systems — Steps down 1-1/2" socket fitting hub ports to 3/4" socket pipe runs on cooling tower supply headers, chilled water distribution branch lines, and chemically treated water system socket assemblies within the Schedule 40 pressure class where all-socket construction is maintained at each hub reduction point and the downstream 3/4" service run continues in all-socket cemented construction