Wayne CDU790 1/3 HP Submersible Sump Pump – Cast Iron, Vertical Float Switch, 4600 GPH

Smart, durable basement drainage

The Wayne CDU790 combines a compact, heavy‑duty design with practical features to help keep your basement dry during heavy rain, rapid snowmelt, or rising groundwater. Built with a cast‑iron housing and a corrosion‑resistant epoxy coating, it stands up to demanding use while delivering quiet, dependable performance in real home settings.

Key benefits at a glance

• Top suction design reduces air locks and minimizes debris‑related clogs, helping steady flow from the sump.
• Integrated vertical float switch enables automatic activation when water rises, without manual intervention.
• 1‑1/2 inch discharge simplifies connection to standard piping and accessories.
• Epoxy‑coated steel motor housing plus a cast‑iron volute provide lasting corrosion resistance and durability.
• Ceramic mechanical seal supports longevity in demanding sump environments.
• Easy installation in about 15 minutes with no plumbing changes required.

Built for reliable, long‑lasting use

The CDU790 features a 1/3 HP motor and a robust cast‑iron base designed for quiet operation in basements and utility spaces. Its compact footprint targets 11‑inch diameter sump pits or larger, while the cast‑iron construction and epoxy coating deliver enduring reliability. A float guard protects the switch from hang ups, helping prevent unwanted interruptions during operation.

What you get and how it helps

Designed for indoor use, this sump pump can move water efficiently, with a rating up to 4,600 GPH at zero head, making it a solid choice for storm drains, snowmelt, and seepage scenarios. The 1/2 inch discharge clearance and top suction design allow straightforward setup and dependable drainage without requiring special plumbing changes.

Real‑world use often highlights quick setup, quiet performance, and confident basement drainage when water challenges arise. For best results, pair with standard check valves and ensure the sump basin meets the 11‑inch minimum diameter when using the CDU790’s top suction configuration. This model ships with a durable base and is UL listed, reflecting a focus on dependable, UL‑recognized performance.

Why homeowners choose Wayne CDU790

• Compact, space‑savvy design for typical basement pits.
• Easy maintenance features like a durable ceramic seal and protective float guard.
• American assembly and a solid 3‑year warranty for peace of mind.