Reducing Tee, Slip x Slip x Slip PVC Schedule 40 4" x 4" x 1-1/2" (401-419)

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 401-419 is the all-slip counterpart to the 402-419 (4" x 4" x 1-1/2" FPT branch) and holds a well-defined position at the upper end of the small-to-mid branch range in the 4" all-slip reducing tee series. The 1-1/2" branch is one of the most common pipe sizes in commercial and industrial plumbing — supporting a wide range of valve bodies, strainer assemblies, pump connections, and inline equipment — and at this size the branch carries genuine moderate-to-high flow capacity as a primary zone circuit or dedicated secondary supply line rather than a service tap or instrument connection. This positions the 401-419 directly below the near-primary-flow 3" branch of the 401-422 and the secondary circuit 2" branch of the 401-420, serving installations where the downstream 1-1/2" circuit is a meaningful, sustained-flow branch rather than an occasional or low-volume tap. All three ports are permanent solvent-welded connections — the characteristic that governs the application context of this fitting entirely. The 401-419 is the correct choice when the 1-1/2" branch is a designed-in, fixed system element that will never require disconnection or reconfiguration: a permanent zone circuit supply, a fixed bypass assembly, a long-term dedicated equipment feed, or any 1-1/2" branch that is integral to the distribution layout by design. At the 1-1/2" branch size, downstream connected elements — zone valves, pump connections, strainer assemblies, inline meters — are substantial fittings with well-established replacement and maintenance cycles in most commercial and industrial systems. The permanent nature of the all-slip branch joint must be a deliberate design decision rather than an inadvertent default. Buyers who anticipate any future need to service, remove, or reconfigure the 1-1/2" branch connection should select the 402-419 (FPT branch) instead, which provides an identical 4" slip run with a threaded 1-1/2" outlet that remains fully serviceable throughout the system's life.

Specifications:

Industries & Applications:

• Irrigation & Agriculture — Permanent 1-1/2" branch connections off 4" mainline headers for fixed primary zone circuit supply lines, dedicated lateral headers, and permanent bypass assemblies in large-scale pressurized irrigation systems where the branch is a designed-in long-term installation carrying sustained moderate-to-high flow volume
• Municipal Water & Wastewater — Permanent moderate-to-high flow service branches and fixed secondary supply connections off 4" distribution mains at pump stations and treatment facilities where a 1-1/2" all-solvent-weld branch is a permanent system element with no future serviceability requirement at the branch joint
• Industrial Process Piping — Permanent 1-1/2" branch connections off 4" process fluid and cooling water mainlines for fixed bypass circuits, dedicated secondary distribution lines, permanent chemical feed assemblies, and designed-in service branches in fully solvent-welded industrial piping systems
• HVAC & Mechanical — Permanent 1-1/2" branch connections off 4" chilled water and condenser water mainlines for fixed zone circuit feeds, dedicated equipment supply lines, and permanent bypass assemblies in commercial mechanical rooms where all-slip PVC construction is specified throughout the system
• Commercial Plumbing — Permanent moderate-to-high flow branch connections off 4" distribution headers for fixed primary zone supply lines, dedicated equipment feeds, and permanent secondary service circuits where the 1-1/2" branch is a designed-in system element with no future removal or reconfiguration requirement
• Fire Suppression — Permanent auxiliary drain assemblies, fixed primary branch circuit feeds, and dedicated riser supply connections off 4" sprinkler system mains where a 1-1/2" all-solvent-welded branch is specified as a permanent element of a fully bonded fire suppression installation