Wye, Slip x Slip x Slip, PVC Schedule 80 3" x 1" (875-335)

The 875-335 is a 3" x 1" Schedule 80 PVC reducing wye with slip socket connections on all three outlets. The fitting carries a 3" solvent-weld main run while introducing a 1" reduced branch at a 45° angle — the geometry that defines the wye fitting type, satisfies horizontal drain line branch connection code requirements, and delivers measurably better hydraulic performance at the junction than a standard 90° tee branch in drain, waste, and vent (DWV) applications, gravity-flow drainage systems, and industrial process piping where low-turbulence flow transition at branch junctions is both a performance and code priority.

The 875-335 carries the smallest branch outlet in the 3" Schedule 80 reducing wye series, completing a five-SKU family that steps down from 3"×2-1/2" (875-339) through 3"×2" (875-338), 3"×1-1/2" (875-337), and 3"×1-1/4" (875-336) to this 3"×1" configuration. The 1" branch represents a full two-inch nominal reduction from the 3" run — the most pronounced step-down in the series — and is purpose-sized for the smallest practical Schedule 80 branch connection: individual instrument drain taps, single-fixture waste connections, chemical injection return ports, low-volume sampling lines, and small equipment drain connections where a fully rated Schedule 80 socket at 45° is required but the branch flow demand is minimal.

The 1" nominal size in an industrial Schedule 80 context is almost exclusively an instrument, equipment drain, or low-flow process connection size. On a 3" primary drain or process header, a 1" wye branch is not a general-purpose lateral — it is a deliberate, point-specific tap for a defined low-flow function. The wye geometry at this branch size still matters: the 45° entry angle prevents the abrupt flow disruption that a 1" tee branch would introduce into the 3" main, reduces the risk of solids or particulate accumulation at the branch junction in chemical and industrial waste streams, and keeps the assembly code-compliant for horizontal drain line branch connections where a wye is the specified fitting type.

Specifying Schedule 80 at the 1" branch size — rather than transitioning to Schedule 40 for the smaller branch — maintains material and schedule consistency throughout the assembly, which is standard practice in chemical processing, pharmaceutical, semiconductor, and laboratory drain systems where mixing schedules at branch connections introduces inconsistency in chemical resistance, wall thickness, and pressure ratings across the piping network.

All three slip sockets accept standard IPS-dimension Schedule 80 PVC pipe bonded with IPS-approved PVC solvent cement. Manufactured from rigid dark gray PVC compound to ASTM D2467, the 875-335 delivers the full Schedule 80 performance profile: heavier walls, higher pressure ratings, superior chemical resistance across acids, bases, and industrial solvents, and greater impact and mechanical stress tolerance than Schedule 40 equivalents — confirming its role in industrial, chemical, laboratory, and process service environments where schedule consistency and performance at every connection point in the system are non-negotiable specification requirements.

Specifications:

Industries & Applications:

• Industrial Drain, Waste & Vent (DWV) — Individual instrument drain taps, single-fixture waste connections, and minimum-bore lateral entries on 3" industrial drain headers where the 45° wye branch satisfies horizontal drain line code requirements and Schedule 80 wall thickness handles chemical drain service and aggressive industrial effluents throughout the assembly
• Chemical Processing & Manufacturing — Low-volume chemical injection return ports, individual equipment drain taps, small vessel drain connections, and point-specific waste branch entries on 3" chemical drain and process waste headers; Schedule 80 construction maintains schedule consistency with the parent system and provides chemical resistance across the full range of acids, bases, solvents, and industrial process fluids
• Laboratory & Research Facilities — Individual sink drain, instrument waste, and small equipment drain connections branching into a 3" Schedule 80 laboratory waste collection header; Schedule 80 chemical resistance handles solvent waste, acid drain, and mixed laboratory effluent streams where schedule consistency across every branch connection is a design and specification requirement
• Pharmaceutical & Biotech Facilities — Low-flow process drain branch connections, individual equipment drain taps, and secondary waste circuit entries on 3" Schedule 80 primary drain and process lines in GMP and cleanroom environments where material consistency and chemical resistance at every fitting in the drain network are validation and compliance requirements
• Semiconductor & Electronics Manufacturing — Individual process tool drain connections, chemical waste collection branch entries, and rinse station drain taps feeding into a 3" Schedule 80 chemical waste collection header; Schedule 80 PVC's chemical resistance to ultra-pure water, aggressive process chemicals, and mixed semiconductor effluent streams makes schedule consistency across all branch connections a standard design requirement
• Industrial Process Piping — Minimum-bore condensate drain taps, instrument drain connections, sampling port branches, and low-flow bypass entries on 3" Schedule 80 process water, coolant, and utility fluid headers where the 1" wye branch maintains system schedule consistency and the 45° geometry supports clean hydraulic transition at the tap point
• Pulp, Paper & Food Processing — Small equipment drain, condensate discharge, and individual fixture drain branch connections on 3" waste collection and drain headers handling dilute chemicals, caustic solutions, steam condensate, and food-safe process effluents in industrial facilities where Schedule 80 chemical resistance is specified throughout the drain network
• HVAC & Mechanical Systems — Minimum-bore condensate drain taps and individual equipment drain branch connections on 3" Schedule 80 mechanical system drain headers in industrial and commercial facilities where corrosion-resistant, schedule-consistent fittings are specified for demanding service environments requiring long-term chemical and mechanical reliability