Reducing Tee, Slip x Slip x Slip PVC Schedule 40 1-1/2" x 1-1/2" x 3/4" (401-210)

This 1-1/2" x 1-1/2" x 3/4" Schedule 40 PVC Reducing Tee (Slip x Slip x Slip) provides a three-way solvent-cement junction in which the perpendicular branch outlet steps down to 3/4" while both inline run ends maintain the full 1-1/2" mainline diameter — the standard reducing tee configuration for tapping a smaller-diameter service line off a larger-diameter pressure main in an all-socket PVC assembly. Constructed in white Schedule 40 PVC, it offers reliable performance in commercial plumbing, irrigation, and light industrial installations where a corrosion-resistant, all solvent-cement branch tap is required off a 1-1/2" distribution main.

The two 1-1/2" slip socket run ends form the inline portion of the tee and accept 1-1/2" PVC pipe for permanent solvent-cement bonds, maintaining full mainline diameter through the run without restriction or interruption. The 3/4" slip socket branch outlet accepts 3/4" PVC pipe for a permanent solvent-cement bond perpendicular to the run, providing a smaller-diameter socket tap point without reducing flow through the main line. This all-slip configuration is the correct choice when the downstream branch connection is a 3/4" PVC socket pipe run — where the branch will be solvent-cemented rather than threaded; it should not be confused with the 402-210 (Slip x Slip x FPT, same size), which provides a 3/4" female-threaded branch outlet for connecting male NPT-threaded components directly off the tee body without a separate bushing or adapter. The 1-1/2" to 3/4" branch step-down is a 2:1 nominal reduction — one of the most common run-to-branch combinations in commercial plumbing and irrigation systems, allowing a single 1-1/2" distribution main to supply multiple 3/4" socket branch connections to zone valves, fixture supply lines, equipment feed runs, and service branches throughout the system.

Rated to 330 psi at 73°F (governed by the 1-1/2" run ends), this tee is suited for standard commercial and light industrial pressure service. 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 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. Allow adequate cure time before pressurizing the system, and derate pressure ratings for elevated temperatures per published derating curves.

Specifications:

Industries & Applications:

• Irrigation & Water Distribution — Taps 3/4" socket lateral supply lines, zone valve feed runs, drip emitter headers, and dedicated branch connections off 1-1/2" socket distribution mains in agricultural and municipal irrigation systems where all-socket construction is maintained throughout and the 2:1 run-to-branch reduction is among the most common branch sizing combinations in the system
• Commercial Plumbing — Branches 3/4" socket supply lines to fixture connections, zone valve inlets, and service branch runs off 1-1/2" socket pressurized distribution mains in commercial building water systems where all-socket PVC construction is specified or preferred at the branch tap location
• Industrial Process Piping — Taps 3/4" socket service branches, equipment feed lines, and process water distribution laterals off 1-1/2" socket process water headers in water treatment, chemical processing, and manufacturing facilities where all-cemented Schedule 40 PVC construction is specified throughout the branch tap assembly
• Chemical Handling — Provides a corrosion-resistant, all solvent-cement branch tap in systems conveying acids, caustics, fertilizer solutions, and other fluids incompatible with metal fittings, particularly at chemical feed distribution branches, dosing line laterals, and injection manifold taps where a 3/4" socket pipe run must branch off a 1-1/2" socket distribution main without any threaded interface at the tee
• Water Treatment & Aquaculture — Used at filter feed distribution branch points, recirculating system header taps, and treatment equipment lateral connections where a 1-1/2" socket main must supply a 3/4" socket pipe run to a treatment component, dosing point, or distribution branch requiring NSF/ANSI 61 compliance and an all-cemented assembly throughout
• HVAC & Mechanical Systems — Taps 3/4" socket branch service lines off 1-1/2" socket distribution headers on cooling tower supply assemblies, chilled water distribution systems, and chemically treated water mains within the Schedule 40 pressure class where all-socket construction is preferred at branch tap points