Tee, Slip x Slip x FPT PVC Schedule 80 4" x 1-1/2" (802-419)

The 4" x 1-1/2" PVC Schedule 80 Tee (802-419) combines a 4" slip x slip inline run with a 1-1/2" female pipe thread (FPT) branch outlet — a Schedule 80 mixed-connection tee engineered for industrial process piping and chemical handling systems where a moderate-flow, threaded, removable service connection must tap directly into a 4" primary run in a single compact, pressure-rated fitting. The two 4" slip ports accept standard Schedule 80 pipe for permanent, solvent-welded inline joints, while the 1-1/2" FPT branch accommodates any standard 1-1/2" male-threaded valve, strainer, equipment inlet, chemical dosing assembly, or service connection that requires periodic removal or replacement without disturbing the solvent-welded 4" run on either side.

Stepping one branch size above the 802-418 (1-1/4" branch) in the 802-series 4" mixed-connection tee lineup, the 802-419 represents the point in the series where the branch transitions fully from small-service-connection territory into moderate-flow application range. At 1-1/2" FPT, the branch carries meaningful flow capacity — sufficient for dedicated equipment supply lines, recirculation loops, bypass assemblies, chemical dosing headers, secondary distribution branches, and moderate-flow service connections that must interface with the primary 4" header through a threaded, serviceable outlet. The 1-1/2" branch is also a common nominal pipe size with broad fitting availability, meaning the downstream threaded assembly at the branch port — valves, strainers, nipples, adapters — is straightforward to source and configure once the tee is installed.

The size differential between the 4" run and the 1-1/2" branch — two and a half nominal pipe sizes — remains pronounced enough that the single-fitting integration advantage is fully applicable: the 802-419 eliminates the reducer bushing and threaded adapter that a conventional multi-fitting branch assembly would require, keeping the branch point compact and the joint count low. At the same time, the 1-1/2" branch is large enough that the downstream service connection it supports is a substantive part of the system design rather than a precision instrumentation tap — making the 802-419 one of the more versatile mid-range SKUs in the 802-series 4" lineup, bridging the small-tap configurations below it and the larger-branch service tees above it.

The mixed slip-and-thread configuration delivers the core design logic shared across the 802-series: the two 4" solvent-welded slip ports create permanent, pressure-rated inline joints that become part of the surrounding Schedule 80 assembly, while the 1-1/2" FPT branch preserves full downstream serviceability — allowing the threaded valve, strainer, equipment connection, or service fitting at the branch to be removed and replaced as maintenance, inspection, or system reconfiguration requires, without cutting into or disturbing the primary 4" run.

Manufactured to Schedule 80 specifications and dimensionally compliant with ASTM D2467, the 802-419 delivers the elevated wall thickness and pressure rating that Schedule 80 gray PVC is specified for in chemical processing, industrial fluid handling, and demanding commercial applications. Gray PVC construction provides broad chemical compatibility with acids, alkalis, and industrial process fluids. NSF 61 certification confirms suitability for potable water contact where required.

Specifications:

Industries & Applications:

• Chemical Processing — moderate-flow equipment supply connections, chemical dosing headers, recirculation loop branches, and 1-1/2" valve isolation points off 4" process fluid and chemical distribution headers where a single-fitting integrated branch eliminates a multi-fitting assembly at the tap point
• Industrial Process Piping — dedicated equipment supply lines, bypass assemblies, moderate-flow service branch connections, and strainer inlet branches off 4" plant utility and process fluid headers in Schedule 80 systems where the branch serves a component requiring periodic removal or service access
• Water & Wastewater Treatment — moderate-flow equipment supply, chemical dosing, and service branch connections in treatment plant process piping where a 4" Schedule 80 slip run and 1-1/2" threaded branch are called out together in the system design
• Commercial & Industrial Plumbing — 1-1/2" equipment supply, bypass, and valve branch connections in high-pressure Schedule 80 mechanical systems where the branch serves a dedicated moderate-flow service or equipment interface off a primary 4" distribution header
• Aquaculture & Food Processing — moderate-flow equipment supply, chemical dosing, and recirculation branch fittings in recirculating systems and chemical-exposure fluid handling installations requiring Schedule 80 pressure and chemical resistance at the tee body with a removable 1-1/2" threaded outlet
• Irrigation & Agriculture — equipment supply connections, bypass assemblies, and chemical injection headers off 4" Schedule 80 high-pressure primary distribution headers where a removable 1-1/2" threaded branch is specified for filtration, dosing, or control equipment with standard 1-1/2" NPT ports