Tee, Slip x Slip x FPT PVC Schedule 80 4" x 1/2" (802-415)

The 4" x 1/2" PVC Schedule 80 Tee (802-415) combines a 4" slip x slip inline run with a 1/2" female pipe thread (FPT) branch outlet — the smallest branch configuration in the 802-series 4" mixed-connection tee lineup, engineered for Schedule 80 industrial process piping and chemical handling systems where a minimal-flow, threaded, removable service connection must tap directly into a 4" primary run at a single, compact, pressure-rated point. The two 4" slip ports accept standard Schedule 80 pipe for permanent, solvent-welded inline joints, while the 1/2" FPT branch accommodates any standard 1/2" male-threaded valve, pressure gauge, instrument, sensor, chemical injection quill, vent connection, or sample port that requires periodic removal or replacement without disturbing the solvent-welded 4" run on either side.

At a 1/2" FPT branch on a 4" run, the 802-415 carries the largest size differential in the 802-series 4" tee lineup — a full six nominal pipe sizes between the primary run and the branch outlet, and one step beyond the already-pronounced differential of the 802-416 (3/4" branch). This configuration is purpose-built for the most highly specialized precision service tap applications in Schedule 80 piping systems: pressure gauge connections where a 1/2" threaded port is the standard instrument interface, chemical injection quills specified at 1/2" MPT, 1/2" instrument air or fluid supply taps, vent connections, and sample ports that must integrate directly with a 4" Schedule 80 primary header at a single permanent tap point without an intermediate reducer bushing and threaded adapter assembly at the branch.

The distinction between the 802-415 and the 802-416 is narrow but precise — a half-inch difference in branch diameter that reflects an exact instrument, valve, or equipment thread specification rather than a field approximation. Buyers sourcing a 1/2" FPT branch on a 4" Schedule 80 tee are working from a P&ID drawing, instrument data sheet, or equipment specification where 1/2" NPT is the designated connection size at the tap point. The 802-415 delivers that specification in a single, fully integrated fitting — eliminating the reducer bushing and threaded adapter that a two- or three-fitting branch assembly would require, and providing a permanently installed, pressure-rated tap point in the Schedule 80 run with a removable, re-threadable 1/2" service outlet.

The mixed slip-and-thread configuration delivers the same core design logic as all 802-series tees: the two 4" solvent-welded slip ports create permanent, pressure-rated inline joints that become part of the surrounding Schedule 80 assembly, while the 1/2" FPT branch preserves full downstream serviceability — allowing the threaded instrument, gauge, valve, or injection fitting at the branch to be removed and replaced as maintenance, calibration, 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 802-415 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 — pressure gauge connections, chemical injection quills, and 1/2" instrument supply branch taps off 4" process fluid and chemical distribution headers where a single-fitting integrated tap point is specified over a multi-fitting branch assembly
• Industrial Process Piping — 1/2" vent connections, sample ports, instrument air taps, and minimal-flow service branch takeoffs from 4" plant utility and process fluid headers in Schedule 80 systems where the branch serves a component with a standard 1/2" NPT instrument interface
• Water & Wastewater Treatment — low-flow instrumentation and monitoring branch connections in treatment plant process piping where a 4" Schedule 80 slip run and 1/2" threaded branch are called out together in the system design or instrument loop documentation
• Commercial & Industrial Plumbing — 1/2" instrument supply and gauge tap connections in high-pressure Schedule 80 mechanical systems where the branch serves a pressure sensor, transmitter, or minimal-flow service connection off a primary 4" header
• Aquaculture & Food Processing — monitoring, injection, and vent branch fittings in recirculating systems and chemical-exposure fluid handling installations requiring Schedule 80 pressure and chemical resistance at the tee body with a 1/2" threaded service outlet
• Irrigation & Agriculture — pressure monitoring and chemical injection tap connections off 4" Schedule 80 high-pressure primary distribution headers where a removable 1/2" threaded branch is specified for precision injection equipment or instrumentation with a standard 1/2" NPT port