Reducing Tee, Slip x Slip x Slip PVC Schedule 40 1" x 1" x 1/2" (401-130)

This 1" x 1" x 1/2" Schedule 40 PVC Reducing Tee (Slip x Slip x Slip) provides a three-way all solvent-cement junction that maintains a full 1" inline run while tapping a reduced 1/2" socket branch perpendicular to the run — the most widely specified all-socket small-bore service branch tee at the dominant 1" grid and distribution header diameter in residential and light commercial PVC systems. Constructed in white Schedule 40 PVC, it offers reliable performance in irrigation, fire suppression, commercial plumbing, and light industrial applications where a dedicated 1/2" socket service stub, drip emitter supply connection, small-bore lateral, or instrument branch must be incorporated directly into a 1" socket pipe run without interrupting or reducing the mainline diameter through the fitting.

The two 1" slip socket run ends accept 1" PVC pipe for permanent solvent-cement bonds forming the continuous inline run, while the 1/2" slip socket branch outlet accepts 1/2" PVC pipe for a permanent solvent-cement bond perpendicular to the run — tapping the smaller-bore branch at the tee body while preserving the full 1" interior diameter through both run ends. The 1" run is maintained at full diameter through the fitting body, ensuring that the inline flow capacity of the 1" mainline or distribution header is not reduced at the tee location while still providing a dedicated 1/2" socket branch tap. This configuration is the all-socket equivalent of a service tee — allowing a 1/2" socket drip emitter supply stub, small-bore zone lateral, solenoid valve supply run, or instrument connection branch to depart at right angles from a 1" all-socket grid header, distribution run, or mainline assembly without requiring an additional reducer coupling or spigot bushing downstream of a full-size tee at the same tap location. It should not be confused with the 402 series mixed-connection counterpart at this run size (Slip x Slip x FPT, if stocked), which provides a female-threaded branch outlet for a male-threaded downstream component rather than a socket outlet for a cemented pipe run. At 1", the 1/2" reducing branch tee is most commonly encountered in irrigation grid manifold assemblies where a 1/2" drip emitter supply stub or zone lateral must depart from a 1" header; in fire suppression grid headers where a 1/2" drop must be tapped off a 1" branch line; and in commercial plumbing distribution assemblies where a dedicated 1/2" fixture or equipment supply must be served off a 1" socket distribution main in the most compact possible single-fitting tap configuration.

Rated to approximately 450 psi at 73°F (governed by the 1" slip 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. Note that the branch outlet (1/2") and run ends (1") are different diameters — confirm pipe diameters before cementing each joint to avoid inserting the incorrect pipe size into either port. 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 a dedicated 1/2" socket drip emitter supply stub, small-bore zone lateral, or service branch directly off a 1" all-socket grid header, sub-main, or distribution run in residential, light commercial, and agricultural irrigation systems where the 1/2" branch must depart at right angles from the 1" mainline run without reducing the inline run diameter at the tap location — the most common all-socket small-bore service branch tee configuration at the dominant 1" grid header diameter
• Drip & Micro-Irrigation Systems — Provides the standard all-socket tap point for 1/2" socket drip emitter supply laterals, micro-irrigation sub-headers, and small-bore zone distribution runs departing from a 1" all-socket distribution main in drip and micro-irrigation systems where the 1" run must continue undiminished while supplying a dedicated 1/2" socket drip or micro-spray zone supply branch
• Fire Suppression Systems — Taps a 1/2" socket sprinkler head drop, branch line stub, or instrument connection directly off a 1" all-socket grid branch line or distribution header in light-hazard and residential Schedule 40 PVC fire suppression systems where the 1/2" branch must depart from the 1" grid header run in the most compact single-fitting configuration
• Commercial Plumbing — Provides a compact 1/2" socket dedicated service branch tap off a 1" socket distribution main at fixture supply, equipment feed, and small-bore service connection points in commercial building water distribution systems where a single fitting replaces a full-size tee plus a separate 1" x 1/2" reducer bushing or coupling at the same branch tap location
• Industrial Process Piping — Taps a 1/2" socket instrument supply run, small-bore service branch, or sample line stub directly off a 1" all-socket process water distribution header in water treatment, chemical processing, and manufacturing facilities where the 1" mainline run must continue at full diameter while supplying a dedicated 1/2" small-bore service branch at the tee location
• Water Treatment & Aquaculture — Used at inline tap points along 1" all-socket distribution headers where a 1/2" socket chemical dosing feed, instrument supply branch, small-bore recirculating loop, or dedicated service run must depart at right angles from the 1" distribution run with NSF/ANSI 61 compliance required throughout the all-cemented assembly