Reduced Wye, Socket PVC Schedule 40 3" x 2-1/2" (475-339)

The 3" x 2-1/2" PVC Schedule 40 Reduced Wye (Socket) provides a smooth, angled branch connection off a 3" solvent-welded drain or gravity-flow run, accepting a 2-1/2" pipe at the branch port. The wye geometry orients the branch at approximately 45 degrees to the main run — a deliberate departure from the 90-degree branch geometry of a standard tee — allowing entering flow from the branch to merge with the main run in a gradual, low-turbulence transition that supports drainage efficiency and reduces the risk of solids accumulation at the junction point.

The reducing configuration addresses a common system design requirement: a 3" main run collecting flow from a 2-1/2" branch line without stepping down the main run diameter. This preserves full flow capacity through the primary drain line while accommodating a smaller-diameter lateral or secondary drain connection at the branch. All socket ends accept PVC pipe via solvent cement, creating permanent, leak-free joints throughout the assembly.

Wye fittings are the preferred branch fitting in gravity drain, waste, and vent (DWV) system design wherever flow direction and solids-carrying capacity are design priorities. The 45-degree entry angle is specified in many plumbing codes for horizontal-to-horizontal drain branches precisely because it supports self-scouring flow velocities and minimizes the dead zones where solids can settle — making the wye a better long-term performer than a sanitary tee in horizontal drain applications.

Manufactured to ASTM D2665 standards and listed under NSF/ANSI 14, the 475-339 is molded from white Schedule 40 PVC, appropriate for above-ground and underground DWV applications across a broad range of commercial and industrial drain system configurations.

Specifications:

Industries & Applications:

• Commercial Plumbing & DWV Systems — The primary application for Schedule 40 wyes at this size; installed in horizontal drain runs in commercial buildings, multi-unit residential construction, and institutional facilities where a 2-1/2" secondary drain line — floor drain, fixture group, or equipment drain — connects to a 3" main drain run at a code-compliant 45-degree entry angle
• Municipal & Civil Drainage — Used in gravity sewer laterals, stormwater collection systems, and site drainage infrastructure where a 2-1/2" branch drain must tie into a 3" main run with minimal flow disruption and reliable long-term solids conveyance
• Industrial Process Drainage — Applied in plant floor drain systems, equipment condensate collection, and process wastewater drainage where a reduced-branch wye provides a cleaner, lower-turbulence confluence than a tee fitting in horizontal gravity drain configurations
• Food & Beverage Processing — Used in facility drain systems where hygiene, flow-through efficiency, and minimal solids accumulation at drain junctions are operational requirements; the wye geometry supports self-cleaning flow velocities at the branch confluence
• Healthcare & Institutional Facilities — Installed in sanitary drain systems in hospitals, schools, and government buildings where plumbing codes specify wye fittings for horizontal drain branches and drainage system longevity is a design priority
• Irrigation & Agricultural Drainage — Applied in agricultural facility drain systems, greenhouse drainage, and irrigation runoff collection where a 2-1/2" lateral drain ties into a 3" collection main at a low-turbulence angle to maintain solids-carrying capacity through the junction