Lasco Fittings 437-422 4″SPGx3″S SCH40 PVC Reducer Bushing

Description

Westlake Pipe & Fittings 437-422 Reducer Bushing, 4″ Spigot x 3″ Slip

The Westlake Pipe & Fittings 437-422 Reducer Bushing, featuring a 4-inch spigot connection and a 3-inch slip socket, is engineered for high-performance transitions in large-diameter PVC plumbing systems. This heavy-duty reducer bushing is built for installers, contractors, pool professionals, irrigation specialists, and maintenance technicians who require uncompromising reliability, strong material integrity, and consistent long-term performance. Whether you’re constructing a new system or modifying an existing one, this reducer bushing delivers dependable results in even the most demanding applications.

Constructed from premium corrosion-resistant PVC, the Westlake 437-422 offers exceptional durability in both indoor and outdoor environments. It resists chemicals, moisture, pressure variations, UV exposure, and harsh environmental conditions. Unlike metal fittings, it will not rust, scale, or corrode, ensuring a longer service life and reduced maintenance requirements. This makes it a smart choice for water treatment systems, pool plumbing, industrial circulation loops, and municipal installations where consistent water flow and structural reliability matter.

The 4” spigot end is designed to fit directly into any standard 4-inch PVC socket or fitting, creating a strong, stable connection. The 3” slip socket provides a smooth, easy-to-prime surface for solvent-weld bonding to 3-inch PVC pipe. This simple installation process makes it suitable for contractors who need efficiency and performance on the job site.

This reducer bushing is especially beneficial when downsizing between line sizes while maintaining smooth, uninterrupted flow. Flow transitions are engineered to be consistent, reducing turbulence, vibration, and system strain. The internal design supports efficient water movement, an important factor in pump-driven systems such as pool circulation lines, filtration systems, spa plumbing, agricultural watering setups, and high-volume waste or drainage systems.

Westlake products follow industry standards for quality, ensuring compatibility with all Schedule 40 PVC systems and most Schedule 80 setups where appropriate. The reducer bushing maintains structural integrity under continuous use, making it suitable for both residential and commercial properties.

Professionals trust Westlake for the consistency of their fittings. Each reducer bushing is manufactured with tight dimensional accuracy, meaning the spigot and slip ends fit properly without gaps or inconsistencies. This ensures predictable solvent welding, secure joints, and long-term dependability.

If you need a robust, high-quality reducer bushing capable of seamlessly connecting a 4-inch line to a 3-inch line, the Westlake Pipe & Fittings 437-422 Reducer Bushing is an outstanding solution. It offers durability, versatility, ease of installation, and a level of reliability that professionals can count on every day.

Westlake Pipe & Fittings is dedicated to helping contractors maximize efficiency and helping engineers design systems that entire communities can rely on. With manufacturing & distribution centers across North America, dedicated sales, technical services, specification engineers and customer support teams, our unparalleled service allows you to design, specify and install complete projects with confidence.

Westlake Pipe & Fittings 437-422 Reducer Bushing, 4″ Spigot x 3″ Slip Features:

• Compact design provides stability while fitting efficiently in tight spaces
• Ideal for pools, spas, irrigation systems, industrial water lines, and municipal applications
• Made from strong Schedule 40 PVC for long service life and corrosion resistance
• 4″ spigot x 3″ slip reducer bushing for secure pipe size transition
• Constructed from durable, corrosion-resistant Schedule 40 PVC

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