429-532 6" x 4" Slip x Slip Reducer Coupling PVC SCH 40

Typical Applications

A 6" to 4" PVC reducer is used when large-diameter systems need a controlled reduction in flow, pressure, or velocity. This Schedule 40 coupling is trusted across multiple industries for high-volume water movement and infrastructure transitions.

Some of the most common applications include:

• Municipal and commercial water distribution systems
• Agricultural irrigation and large-scale sprinkler networks
• Industrial and commercial drainage systems
• HVAC condensate and auxiliary drain lines
• Pool, spa, and aquatic facility circulation systems
• Manifold, pump, and filtration connections
• Utility piping where diameter transitions manage flow efficiency

Installation & Handling Tips

When working with large-diameter PVC fittings, careful preparation is the most surefire way to maintain a strong, leak-free joint for the long haul. Be sure to follow these steps:

• Use a PVC-approved primer and solvent cement designed for Schedule 40.
• Dry-fit the pipe to confirm socket depth and alignment before gluing.
• Clean pipe ends thoroughly — remove moisture, debris, and burrs.
• Support the 6" pipe during installation to prevent stress on the coupling.
• Allow for longer cure times on large diameters before pressure testing.
• Follow manufacturer guidelines for temperature and pressure ratings.
• Do not use PVC fittings for compressed air or applications outside the approved temperature range.

Why Choose Maxx Supply?

Contractors, facilities, and DIYers count on Maxx Supply for consistently availabile medium- and large-diameter PVC components that stack up to the toughest projects:

• High inventory levels for project-based orders
• Fast shipping and dependable fulfillment
• Bulk purchasing options: Carton Qty: 4 | Pallet Qty: 192
• Competitive pricing for plumbers, contractors, and municipal buyers
• Strong quality-control standards across all Schedule 40 PVC fittings
• Easy online ordering backed by knowledgeable customer support