Reducing Tee, Slip x Slip x Slip PVC Schedule 40 4" x 4" x 2" (401-420)

The 401-420 is a PVC Schedule 40 reducing tee with a 4" slip (socket) run and a 2" slip (socket) branch outlet, all joined by solvent cement welding per ASTM D2564. The two 4" run ports accept standard 4" PVC pipe ends for a permanent, pressure-rated inline connection, while the 2" slip branch accepts a standard 2" PVC pipe end — creating a fully solvent-welded, three-way reducing junction with no threaded connections at any port.

Manufactured from rigid PVC compound conforming to ASTM D1784 cell classification requirements, this fitting delivers the corrosion resistance, chemical compatibility, and long service life associated with Schedule 40 PVC across a wide range of commercial, industrial, and municipal piping systems. The Schedule 40 wall thickness provides reliable pressure-rated performance for both pressurized distribution systems and gravity-flow applications.

The 401-420 is the all-slip counterpart to the 402-420 (4" x 4" x 2" FPT branch) and holds a well-defined position within the 4" all-slip reducing tee series. The 2" branch occupies the middle of the series — larger than the small-service and zone-tap branch sizes of the 401-415 (1/2"), 401-416 (3/4"), and smaller siblings, yet meaningfully smaller than the near-primary-flow 3" branch of the 401-422 at the top of the range. This places the 401-420 in a practical secondary circuit role: the 2" branch carries genuine moderate-to-high flow volume for bypass assemblies, secondary distribution headers, and dedicated zone supply lines, while the 4" mainline retains clear priority as the primary flow path through the fitting. All three ports are permanent solvent-welded connections — the defining characteristic that distinguishes the 401-420 from the 402-420 and governs its application context entirely. The all-slip configuration is the correct choice when the 2" branch is a fixed installation that will never require disconnection, removal, or reconfiguration: a permanent secondary loop, a fixed bypass circuit, a long-term zone supply line, or a dedicated service branch that is designed into the system as a permanent element rather than a serviceable connection point. Buyers who anticipate any future need to disconnect the branch — for valve replacement, equipment removal, system reconfiguration, or maintenance access — should select the 402-420 (FPT branch) instead, which provides an identical run configuration with a threaded 2" outlet that can be disengaged without cutting pipe.

Specifications:

Industries & Applications:

• Irrigation & Agriculture — Permanent 2" branch connections off 4" mainline headers for fixed secondary zone supply lines, bypass circuits, and dedicated lateral headers in large-scale pressurized irrigation systems where the branch is a long-term installation designed as a permanent element of the distribution network
• Municipal Water & Wastewater — Permanent moderate-flow branch connections off 4" distribution mains at pump stations, treatment facility headers, and water distribution system assemblies where a 2" secondary service branch or bypass circuit is a fixed system element with no future serviceability requirement at the branch joint
• Industrial Process Piping — Permanent three-way junctions in chemical distribution, cooling water, and process fluid systems where a 4" mainline must branch to a 2" secondary distribution line, bypass loop, or parallel circuit feed in a fully solvent-welded piping system
• Commercial Plumbing — Mechanical room distribution manifolds where a 4" supply header must permanently branch to a 2" secondary service circuit, equipment supply line, or bypass assembly as a fixed element of an all-solvent-weld piping installation
• Fire Suppression — Permanent moderate-flow branch connections off 4" sprinkler system mains where a 2" branch supplies a secondary circuit, inspector test assembly, or auxiliary drain header as a fixed, fully bonded installation
• Aquaculture & Water Treatment — Permanent three-way junctions in large recirculating aquaculture and water treatment systems where a 4" supply main must branch to a 2" secondary treatment circuit, parallel loop, or dedicated zone supply line as a permanent system element