Reducing Tee, Slip x Slip x Slip PVC Schedule 40 1-1/2" x 1-1/2" x 1/2" (401-209)

This 1-1/2" x 1-1/2" x 1/2" 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 1/2" while both inline run ends maintain the full 1-1/2" mainline diameter — a 3:1 nominal reduction that taps a small-bore socket service line off a larger distribution 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 small-bore branch tap is required off a 1-1/2" socket distribution main without any threaded interface at the tee body.

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 1/2" slip socket branch outlet accepts 1/2" PVC pipe for a permanent solvent-cement bond perpendicular to the run, providing a small-bore socket tap point that serves dedicated instrument supply lines, chemical injection feed runs, small-diameter service branches, and monitoring point laterals branching off the 1-1/2" main. This all-slip configuration is the correct choice when the downstream 1/2" branch connection is a PVC socket pipe run that will be solvent-cemented throughout — it should not be confused with the 402-209 (Slip x Slip x FPT, same size), which provides a 1/2" female-threaded branch outlet for connecting male NPT-threaded valves, solenoids, or instrument components directly off the tee without a separate adapter at the branch. The 1-1/2" to 1/2" step-down is the most aggressive confirmed reduction in the 1-1/2" run inlet 401 sub-series — more so than the 401-210 (1-1/2" x 3/4" branch) — and is most commonly encountered where dedicated small-bore socket service runs must branch off a larger distribution main while maintaining the all-socket integrity of the assembly throughout the transition.

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 1/2" socket instrument supply lines, drip emitter feed laterals, and small-bore dedicated service branches off 1-1/2" socket distribution mains in agricultural and municipal irrigation systems where all-socket construction is maintained throughout and the aggressive 3:1 run-to-branch reduction is appropriate for small-bore lateral connections rather than full-flow zone supply branches
• Commercial Plumbing — Branches 1/2" socket supply lines to pressure gauge feed connections, small-diameter fixture supply stubs, and instrument monitoring laterals off 1-1/2" socket pressurized distribution mains in commercial building water systems where all-socket PVC construction is specified throughout and no threaded interface is required at the small-bore branch tap
• Industrial Process Piping — Taps 1/2" socket instrument supply lines, chemical injection feed runs, sampling point stubs, and small-bore service 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 maintained throughout the branch tap assembly
• Chemical Handling — Provides a corrosion-resistant, all solvent-cement small-bore branch tap in systems conveying acids, caustics, fertilizer solutions, and other fluids incompatible with metal fittings, particularly at chemical injection distribution branches, microflow dosing line laterals, and sampling tap feed runs where a 1/2" socket pipe run must branch off a 1-1/2" socket distribution main in an all-cemented configuration
• Water Treatment & Aquaculture — Used at instrument supply branch points, chemical dosing distribution laterals, and small-bore monitoring connection feed lines where a 1-1/2" socket main must supply a 1/2" socket pipe run to a treatment monitoring point, dosing instrument, or small-bore distribution branch requiring NSF/ANSI 61 compliance and an all-cemented assembly throughout
• HVAC & Mechanical Systems — Taps 1/2" socket instrument supply branches and small-bore service laterals 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 small-bore branch tap points