Reducing Tee, Slip x Slip x Slip PVC Schedule 80 2-1/2" x 2-1/2" x 1-1/2" (801-291)

The 801-291 is a PVC Schedule 80 reducing tee with a 2-1/2" slip (socket) run and a 1-1/2" 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 1-1/2" slip branch accepts a standard 1-1/2" 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 801-291 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 801-291 sits at the top of the small-to-mid branch range in the 2-1/2" run Schedule 80 all-slip reducing tee series — above the 801-290 (1-1/4" branch) and immediately below the 801-292 (2" branch). The 1-1/2" branch is one of the most common pipe sizes in commercial and industrial plumbing, and at this size the branch carries genuine moderate-to-high flow capacity as a primary zone circuit, dedicated bypass assembly, or secondary distribution line rather than a controlled service tap. The one-inch step-down from the 2-1/2" run to the 1-1/2" branch is substantial enough to preserve mainline priority clearly, yet the branch flow capacity is high enough to serve as a primary downstream circuit in its own right — a meaningful distinction from the smaller service tap branches of the 801-289 and 801-290. All three ports are permanent solvent-welded connections, and the all-slip configuration is the correct choice when the 1-1/2" branch is a designed-in, fixed system element that will never require disconnection, removal, or reconfiguration at the branch joint. The 1-1/2" branch size is the point in the Schedule 80 all-slip series where the permanent vs. serviceable branch decision carries the most practical weight — downstream connected elements at this size in a Schedule 80 system include zone valves, pump connections, strainer assemblies, and flow control fittings that are among the most commonly serviced components in industrial and chemical piping systems. The permanent nature of the all-slip joint at this branch size 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 a Schedule 80 tee with an FPT branch outlet instead, which provides an identical 2-1/2" slip run with a threaded 1-1/2" outlet that remains fully serviceable throughout the system's life.

Specifications:

Industries & Applications:

• Industrial Process Piping — Permanent 1-1/2" primary branch connections off 2-1/2" Schedule 80 mainlines for fixed bypass circuits, dedicated zone supply lines, and high-capacity secondary branches in high-pressure chemical distribution and process fluid systems where full Schedule 80 pressure integrity is required at every joint in a fully bonded installation
• Chemical Processing — Permanent moderate-to-high flow branch junctions 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 1-1/2" branch serves a primary secondary circuit or dedicated process feed function
• Municipal Water & Wastewater — Permanent moderate-to-high flow service branches and fixed primary secondary connections off 2-1/2" Schedule 80 distribution mains at pump stations and treatment facilities where a 1-1/2" all-solvent-weld branch is a designed-in permanent system element carrying sustained flow to a dedicated circuit
• Irrigation & Agriculture — Permanent 1-1/2" primary zone circuit supply lines and fixed bypass assemblies off 2-1/2" Schedule 80 mainline headers in high-pressure irrigation systems where Schedule 80 construction is specified for elevated pressure performance and the branch carries sustained moderate-to-high flow volume to a primary zone or sector circuit
• HVAC & Mechanical — Permanent 1-1/2" zone circuit feeds, dedicated bypass assemblies, and primary equipment supply connections off 2-1/2" Schedule 80 chilled water and condenser water mainlines in commercial mechanical room installations where all-slip construction is specified throughout the system
• Aquaculture & Water Treatment — Permanent moderate-to-high flow branch connections off 2-1/2" Schedule 80 supply headers for fixed primary circuit feeds, dedicated treatment loop supply lines, and permanent bypass assemblies in large recirculating aquaculture and water treatment systems