Reducing Tee, Slip x Slip x FPT PVC Schedule 40 1-1/4" x 1-1/4" x 1" (402-168)

This 1-1/4" x 1-1/4" x 1" Schedule 40 PVC Tee (Slip x Slip x FPT) provides a three-way junction in which the two inline run ends accept PVC pipe via solvent-cement socket bonds while the perpendicular branch outlet provides a built-in 1" female-threaded connection — combining a standard socket tee and a near-full-size threaded branch adapter into a single compact fitting body. Constructed in white Schedule 40 PVC, it eliminates the need for a separate all-slip tee plus a threaded bushing or adapter at the branch, reducing fitting count, shortening assembly time, and minimizing potential leak points wherever a 1" threaded branch must be tapped off a 1-1/4" socket PVC pipe run.

The two 1-1/4" slip socket run ends accept 1-1/4" PVC pipe for permanent solvent-cement bonds, maintaining full mainline diameter through the inline run. The 1" FPT branch outlet accepts any standard 1" male NPT-threaded fitting, valve, nipple, pump port, or equipment connection directly — without the intermediate step of cementing a separate tee, waiting for cure, and then threading in a bushing before the threaded component can be installed. At the 1-1/4" x 1" combination, the branch outlet is the largest confirmed in the 1-1/4" run inlet 402 sub-series — a modest 1.25:1 nominal step-down that preserves very high flow capacity through the branch and is well-suited to full-size 1" zone valves, pump inlets, filter housing connections, and moderate-to-high-flow service branches where the downstream threaded component requires a full 1" port. This configuration is distinct from the 402-167 (same run, 3/4" FPT branch), which serves more moderate flow branch applications, and from any all-slip 401 series counterpart at this size, which requires a 1" socket pipe run rather than a 1" male-threaded component at the branch connection. It should not be confused with the all-threaded 405 series tee, which requires male NPT threads on all three ports.

Rated to approximately 370 psi at 73°F (governed by the 1-1/4" slip run ends), this tee 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 fittings in moisture-prone or chemically active environments. NSF/ANSI 61 listing confirms suitability for potable water contact.

Apply solvent cement to both the pipe end and fitting socket at each run port per ASTM D2564 procedures, using a primer appropriate for the pipe and fitting schedule. Insert pipe fully into each socket and maintain a quarter-turn during assembly for even cement distribution across the joint surface. On the 1" FPT branch, use a quality pipe thread sealant or PTFE tape on the male NPT threads of the mating component before engagement. Avoid over-torquing the threaded branch connection — PVC threads require hand-tight plus one to two turns. Allow adequate cure time on the cemented joints before pressurizing the system, and derate pressure ratings for elevated temperatures per published derating curves.

Specifications:

Industries & Applications:

• Irrigation & Water Distribution — Taps 1" male-threaded zone valves, pump inlets, filter housing connections, and moderate-to-high-flow lateral supply branches directly off 1-1/4" socket PVC mains in agricultural and municipal irrigation systems where the downstream 1" threaded component requires near-full mainline flow capacity at the branch connection point off the 1-1/4" distribution run
• Commercial Plumbing — Provides a built-in 1" threaded branch outlet off 1-1/4" socket PVC supply runs for ball valves, pressure-reducing valves, backflow preventers, and full-flow branch service connections in commercial building water distribution systems where the downstream threaded component requires a full 1" port at the branch tap location along the 1-1/4" main
• Industrial Process Piping — Taps 1" male-threaded pump inlets, valve bodies, flow meters, and moderate-bore equipment connections directly off 1-1/4" socket process water distribution headers in water treatment, chemical processing, and manufacturing facilities where a single-fitting mixed-connection solution minimizes fitting count at near-full-size branch tap locations
• Chemical Handling — Provides a corrosion-resistant mixed-connection near-full-size branch tap in systems conveying acids, caustics, fertilizer solutions, and other fluids incompatible with metal fittings, at 1" pump inlet connections, chemical feed valve stations, and moderate-to-high-flow injection manifold branch points where a 1" male-threaded component must be tapped off a 1-1/4" socket distribution main
• Water Treatment & Aquaculture — Used at pump inlet branch connections, filter housing taps, UV sterilizer inlet stubs, and recirculating system branch points where a 1-1/4" socket main must supply a 1" threaded equipment or valve connection and NSF/ANSI 61 compliance is required throughout the assembly
• HVAC & Mechanical Systems — Branches 1" male-threaded valve connections, pump inlet stubs, and moderate-to-high-flow service taps directly off 1-1/4" socket PVC runs on cooling tower supply headers, chilled water distribution mains, and chemically treated water systems within the Schedule 40 pressure class