Reducing Tee, Slip x Slip x FPT PVC Schedule 40 2 -/2" x 2-1/2" x 3/4" (402-288)

The 402-288 is a Schedule 40 PVC reducing tee with 2-1/2-inch slip (socket) connections on both run ends and a 3/4-inch female pipe thread (FPT) outlet on the branch. The two 2-1/2" run-end sockets accept standard 2-1/2" Schedule 40 or Schedule 80 PVC pipe via solvent cement, maintaining a permanent, pressure-rated inline run, while the 3/4" FPT branch receives a 3/4" male-threaded fitting, valve, instrument, plug, or union tail. The significant size differential between the 2-1/2" cemented run and the 3/4" threaded branch makes this fitting the practical choice when a large-diameter main pipeline needs a compact, serviceable threaded tap — for pressure monitoring, chemical injection, air relief, instrumentation, or a small-bore isolation valve — without requiring a separate downstream reducing bushing at the branch outlet.

The mixed slip-slip-FPT configuration delivers the serviceability advantage that defines the 402 series: the cemented 2-1/2" run is permanent and undisturbed on both sides of the fitting, while the 3/4" FPT branch can be broken and reassembled independently at any time for instrument replacement, valve service, chemical dosing adjustment, or system modification — without cutting into the main pipe run. The FPT branch also accepts a threaded cap or plug during system commissioning, allowing the branch port to be sealed and reopened later when the branch connection is needed — a practical advantage in phased installations or systems designed with future service points in mind.

Manufactured from rigid, high-impact PVC compound, the 402-288 conforms to ASTM D2466 dimensional standards and is rated for continuous cold-water pressure service. Apply a medium-bodied PVC primer and standard-bodied PVC cement per ASTM D2564 to both 2-1/2" run-end sockets; apply PTFE thread tape or an approved pipe thread sealant to any male-threaded fitting before engaging the 3/4" FPT branch. Do not overtighten the threaded connection, as PVC threads can crack under excessive torque.

Specifications:

Industries & Applications:

• Municipal & Commercial Plumbing — Adds a serviceable 3/4" threaded branch tap to a permanent 2-1/2" cemented supply or service main for pressure gauge connections, air relief valve ports, small-bore isolation valves, or instrument tie-ins in commercial plumbing systems where the main run must remain undisturbed.
• Water Treatment & Distribution — Used on 2-1/2" Schedule 40 distribution headers, filter manifold runs, and treatment system mains where a 3/4" threaded branch port is needed for chemical dosing taps, sample valves, pressure monitoring connections, or secondary instrument feeds without interrupting the cemented main run.
• Irrigation & Agricultural Systems — Installed on 2-1/2" mainline runs at pump station headers, filter assembly manifolds, and zone distribution points where a 3/4" threaded branch is required for pressure gauge connections, fertigation injection ports, solenoid valve feeds, or flow monitoring instrumentation on large-bore cemented systems.
• Industrial Process Piping — Provides a serviceable small-bore threaded branch on a permanent 2-1/2" Schedule 40 PVC process line for chemical injection points, pressure transducer taps, bypass bleed connections, or instrumentation branches in corrosion-resistant systems where the cemented main run must remain permanently bonded.
• Pool & Spa Equipment Rooms — Adds a 3/4" threaded branch to 2-1/2" cemented Schedule 40 circulation or return header piping for pressure gauge assemblies, air relief valve connections, chemical dosing ports, or auxiliary equipment tie-ins that require routine disconnection without disturbing the large-bore cemented run.
• HVAC & Chilled Water Systems — Provides a 3/4" threaded instrument or drain branch on a 2-1/2" Schedule 40 PVC drainage or secondary piping run in commercial mechanical systems where a small-bore serviceable branch tap must be introduced at a large-diameter cemented main without cutting into the permanent pipe run.