Description
Westlake Pipe & Fittings 401582 8″ x 8″ x 4″ Slip x Slip x Slip Reducing Tee
The Westlake Pipe & Fittings 401582 8″ x 8″ x 4″ Slip x Slip x Slip Reducing Tee is a premium Schedule 40 PVC fitting designed to reduce a main 8-inch pipeline to a 4-inch branch line in large-scale plumbing, irrigation, and industrial systems. Its design ensures smooth transitions between pipe sizes, maintaining efficient flow while minimizing turbulence, pressure loss, and stress on connected components.
Constructed from high-quality PVC, the 401582 offers excellent resistance to corrosion, chemical exposure, and environmental wear. Unlike metal fittings, it retains structural integrity under moisture, UV light, and common chemical contact, making it suitable for both above-ground and underground installations. This fitting is ideal for municipal water and wastewater pipelines, irrigation networks, pool and spa circulation, commercial plumbing, and industrial fluid distribution.
The slip socket connections are engineered for solvent-weld installation, forming permanent, leak-resistant bonds with compatible PVC pipe. This method ensures joint reliability under continuous operation and varying pressures. The fitting features precise socket depth, uniform wall thickness, and consistent dimensions for accurate alignment and easy assembly.
The reducing tee configuration allows the 8-inch main line to feed a 4-inch branch line without compromising system efficiency. Its smooth interior reduces friction and turbulence, promoting balanced and stable flow throughout multi-line networks. This controlled reduction is useful for branching to secondary lines, equipment connections, or distribution circuits.
Lightweight PVC construction simplifies handling, transportation, and installation compared to metal alternatives, reducing labor time and improving safety on large or overhead projects. The 401582 is compatible with standard Schedule 40 PVC piping, ensuring seamless integration and professional-grade performance. This reducing tee is built to withstand demanding applications while providing long-term durability, reliable flow control, and minimal maintenance for commercial, municipal, irrigation, and industrial piping systems.
Westlake Pipe & Fittings has earned its reputation as one of North America’s foremost manufacturers of PVC pipe and fittings, delivering reliable infrastructure solutions for municipal, plumbing, industrial, agricultural, irrigation, water-well, electrical, and pool/spa applications. Drawing on decades of industry experience and backed by the resources of a major global materials company, the firm manages a vast manufacturing and distribution network that ensures ready availability and regional supply across the continent. Its product portfolio spans an exceptional breadth — from pressure-rated PVC conduit and solvent-weld sewer and drainage pipes to gasket sewer fittings, high-strength PVCO pressure systems, injection-molded valves, CPVC hot-water fittings, and UV-resistant electrical conduits — enabling seamless integration into virtually any water, waste, or wiring infrastructure project. By employing cutting-edge PVC technologies such as Certa-Lok® restrained joints and molecular-oriented PVCO formulations, the company advances beyond conventional piping to offer enhanced joint stability, long-term durability, and superior resistance to corrosion, chemicals, and environmental stress. Every product reflects a commitment to sustainable construction practices, lightweight and cost-effective materials, and a design life measured in decades rather than years — reducing maintenance needs, lowering lifetime infrastructure costs, and enabling project planners to build with confidence. From small residential installations to large-scale municipal or commercial works, Westlake Pipe & Fittings stands out for its engineering rigor, full-system compatibility, and capacity to meet rigorous safety and performance standards. By combining versatile product lines, robust quality assurance, and a legacy of innovation, the company delivers piping solutions that support reliable water delivery, efficient drainage, robust electrical conduit, and long-term infrastructure integrity — providing professionals the dependable foundation needed for modern construction and utility projects.
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