Tee, Slip x Slip x Slip PVC Schedule 40 1" (401-010)

This 1" Schedule 40 PVC Tee (Slip x Slip x Slip) provides a full-size, all solvent-cement three-way junction at the most widely specified nominal pipe size in residential and light commercial PVC piping systems — accepting 1" PVC pipe at all three socket ports for permanent solvent-cement bonds while maintaining the full 1" interior diameter through both inline run ends and the perpendicular branch outlet. Constructed in white Schedule 40 PVC, it is the foundational branch fitting in 1" all-socket irrigation grid assemblies, fire suppression grid headers, commercial plumbing distribution systems, and light industrial process water assemblies where a continuous inline run must supply or receive a perpendicular branch at the same full pipe diameter.

All three 1" slip socket ports — both inline run ends and the perpendicular branch outlet — accept 1" PVC pipe for permanent solvent-cement bonds, maintaining the full 1" interior diameter through the run and into the branch simultaneously. As the full-size entry at the dominant all-socket PVC assembly diameter, 401-010 is the single most widely specified tee fitting in residential and light commercial PVC systems — appearing at virtually every branch point in 1" all-socket irrigation grid manifold assemblies, fire suppression grid headers, commercial plumbing branch distribution runs, and process water system headers where the branch must flow at the same diameter as the run. This full-size configuration should not be confused with the reducing and bullhead variants confirmed in this catalog session at the same 1" run inlet — the 401-130 (1" x 1" x 1/2" reducing branch), 401-132 (1" x 1" x 1-1/4" bullhead branch), and 401-133 (1" x 1" x 1-1/2" bullhead branch) — each of which modifies the branch outlet diameter for specific flow management, service tap, or collection applications; the 401-010 is the correct choice whenever the branch must carry full 1" flow at the same diameter as the inline run. The mixed-connection counterpart for this fitting is the 402 series (Slip x Slip x FPT) for contractors who need a female-threaded branch outlet rather than an all-socket branch; the Schedule 80 counterpart is the 801 series for higher-pressure applications; and the all-threaded counterpart is the 405 series (FPT x FPT x FPT) for fully threaded 1" systems.

Rated to approximately 450 psi at 73°F, 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 — Provides full-size three-way branch junctions throughout 1" all-socket irrigation grid manifold assemblies, lateral distribution headers, and zone supply runs in residential, light commercial, and agricultural irrigation systems where 1" is the dominant all-socket grid header diameter and every branch point in the grid layout requires a full-size tee to maintain flow capacity through both the continuing run and the departing branch simultaneously
• Fire Suppression Systems — Serves as the standard branch fitting in 1" all-socket Schedule 40 PVC fire suppression grid headers, branch line assemblies, and distribution layouts in light-hazard and residential fire suppression systems where full-size three-way junctions at every branch point maintain full grid flow capacity throughout the all-cemented assembly
• Commercial Plumbing — Provides full-size three-way branch junctions at distribution header branch points, riser feed locations, and service line departures in commercial building water distribution systems where 1" all-socket PVC construction is specified and a full-capacity branch at each tee location maintains complete distribution flow throughout the system
• Industrial Process Piping — Serves as the standard inline branch fitting at header branch points, manifold supply tees, and equipment feed distribution junctions in water treatment, chemical processing, and manufacturing facilities where 1" all-socket Schedule 40 PVC construction is maintained throughout and full-size branch capacity is required at every three-way junction in the distribution layout
• Water Treatment & Aquaculture — Used at inline branch points throughout 1" all-socket distribution headers, filter feed assemblies, recirculating system manifolds, and treatment equipment distribution layouts where NSF/ANSI 61 compliance and full-diameter three-way branch capacity are required at every tee location in the all-cemented assembly
• Chemical Handling — Provides corrosion-resistant full-size three-way junctions at branch points in 1" all-socket chemical distribution headers, dosing system supply assemblies, and feed line manifolds conveying acids, caustics, fertilizer solutions, and other fluids incompatible with metal fittings throughout the all-cemented distribution layout