Reducing Tee, Slip x Slip x Slip PVC Schedule 80 2-1/2" x 2-1/2" x 1-1/4" (801-290)

The 801-290 is a PVC Schedule 80 reducing tee with a 2-1/2" slip (socket) run and a 1-1/4" slip (socket) branch outlet, all joined by solvent cement welding per ASTM D2564. The two 2-1/2" run ports accept standard 2-1/2" PVC pipe ends for a permanent, pressure-rated inline connection, while the 1-1/4" slip branch accepts a standard 1-1/4" PVC pipe end — creating a fully solvent-welded, three-way reducing junction with no threaded connections at any port.

Manufactured from rigid, dark gray PVC compound conforming to ASTM D1784 cell classification requirements, the Schedule 80 wall construction delivers higher pressure ratings and greater mechanical strength than Schedule 40 equivalents at the same pipe size. This makes the 801-290 the correct choice for high-pressure chemical lines, industrial process piping, and any Schedule 80 system where a permanent three-way reducing junction must maintain full Schedule 80 pressure integrity at every port — including the branch — without substituting lighter-wall fittings at the transition point.

The 801-290 occupies a precise position between the 801-289 (2-1/2" x 1" branch) and the 801-292 (2-1/2" x 2" branch) in the 2-1/2" run Schedule 80 all-slip reducing tee series — the 1-1/4" branch steps up from the controlled service tap role of the 801-289's 1" branch, offering modestly greater flow capacity for zone feeds, chemical supply assemblies, and dedicated service connections where 1" is undersized for the downstream circuit but a 1-1/2" or 2" branch would represent a disproportionately large tap off the 2-1/2" mainline. The 1-1/4" branch carries low-to-moderate flow as a controlled secondary branch — substantial enough to serve a dedicated zone valve, chemical dosing assembly, or inline strainer with adequate flow capacity, yet clearly subordinate to the 2-1/2" mainline which retains priority as the primary flow path through the fitting. All three ports are permanent solvent-welded connections — the characteristic that governs the application context of this fitting entirely. The all-slip configuration is the correct choice when the 1-1/4" branch is a designed-in, fixed system element that will never require disconnection, removal, or reconfiguration at the branch joint. At the 1-1/4" branch size in a Schedule 80 system, downstream connected elements — valve bodies, strainer assemblies, chemical injection fittings — are substantial enough that the permanent nature of the all-slip joint deserves deliberate consideration before installation. Buyers who anticipate any future need to service, remove, or reconfigure the 1-1/4" branch connection should consider a Schedule 80 tee with an FPT branch outlet instead, which provides an identical 2-1/2" slip run with a threaded 1-1/4" outlet that remains fully serviceable throughout the system's life.

Specifications:

Industries & Applications:

• Industrial Process Piping — Permanent 1-1/4" service branches off 2-1/2" Schedule 80 mainlines for fixed chemical feed assemblies, dedicated zone valve connections, and controlled moderate-flow secondary branches in high-pressure chemical distribution and process fluid systems where full Schedule 80 pressure integrity is required at every joint
• Chemical Processing — Permanent branch taps in corrosive service piping handling acids, caustics, and aggressive fluids where all-PVC Schedule 80 construction provides both chemical resistance and the required pressure safety margin, and the 1-1/4" branch serves a dedicated chemical dosing, sampling, or secondary feed function
• Municipal Water & Wastewater — Permanent moderate-flow service branches and fixed secondary connections off 2-1/2" Schedule 80 distribution mains at pump stations and treatment facilities where a 1-1/4" all-solvent-weld branch is a designed-in permanent system element carrying controlled secondary flow
• Irrigation & Agriculture — Permanent 1-1/4" branch connections off 2-1/2" Schedule 80 mainline headers for fixed zone valve feeds, dedicated chemical injection supply lines, and controlled moderate-flow service branches in high-pressure irrigation systems where Schedule 80 construction is specified for elevated pressure performance
• HVAC & Mechanical — Permanent 1-1/4" service branches off 2-1/2" Schedule 80 chilled water and condenser water mainlines for fixed zone circuit feeds, dedicated equipment supply connections, and permanent moderate-flow service branches in commercial mechanical room installations where all-slip construction is specified throughout
• Aquaculture & Water Treatment — Permanent moderate-flow branch taps off 2-1/2" Schedule 80 supply headers for fixed chemical dosing supply lines, dedicated secondary circuit feeds, and controlled service branches in recirculating aquaculture and water treatment systems