---
product_id: 12472284
title: "CDU790-1/3 HP Submersible Cast Iron and Stainless Steel Sump Pump with Integrated Vertical Float Switch - Up to 4,600 Gallons Per Hour - Heavy Duty Basement Sump Pump, Black"
brand: "wayne"
price: "฿21665"
currency: THB
in_stock: true
reviews_count: 8
url: https://www.desertcart.co.th/products/12472284-cdu790-1-3-hp-submersible-cast-iron-and-stainless-steel
store_origin: TH
region: Thailand
---

# 1/3 HP motor power Up to 4,600 GPH flow rate Cast iron & stainless steel durability CDU790-1/3 HP Submersible Cast Iron and Stainless Steel Sump Pump with Integrated Vertical Float Switch - Up to 4,600 Gallons Per Hour - Heavy Duty Basement Sump Pump, Black

**Brand:** wayne
**Price:** ฿21665
**Availability:** ✅ In Stock

## Summary

> 💧 Stay dry, stay ahead — the sump pump that works as hard as you do!

## Quick Answers

- **What is this?** CDU790-1/3 HP Submersible Cast Iron and Stainless Steel Sump Pump with Integrated Vertical Float Switch - Up to 4,600 Gallons Per Hour - Heavy Duty Basement Sump Pump, Black by wayne
- **How much does it cost?** ฿21665 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/12472284-cdu790-1-3-hp-submersible-cast-iron-and-stainless-steel)

## Best For

- wayne enthusiasts

## Why This Product

- Trusted wayne brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Heavy-duty cast iron base with corrosion-resistant epoxy coating and stainless steel fasteners ensures long-lasting, quiet performance.
- • **Power Through the Storm:** Robust 1/3 HP motor delivers relentless pumping power to keep your basement dry no matter the weather.
- • **Plug & Play Installation:** Designed for quick, hassle-free setup in just 15 minutes—no plumbing changes or weep hole drilling required.
- • **Trusted American Quality:** Proudly assembled in the USA with a 3-year warranty, giving you peace of mind and dependable performance.
- • **Unmatched Flow Efficiency:** Pumps up to 4,600 gallons per hour with a top suction design that minimizes clogging and air locks for seamless operation.

## Overview

The WAYNE CDU790 is a heavy-duty 1/3 HP submersible sump pump featuring a corrosion-resistant cast iron and stainless steel build. It pumps up to 4,600 gallons per hour with a clog-resistant top suction design, fits 11-inch or larger sump pits, and installs easily without plumbing modifications. Assembled in the USA and backed by a 3-year warranty, it offers reliable, ultra-quiet basement water protection for professionals who demand durability and efficiency.

## Description

WAYNE CDU790-1/3 HP Submersible Cast Iron and Stainless Steel Sump Pump with Integrated Vertical Float Switch - Up to 4,600 Gallons Per Hour - Heavy Duty Basement Sump Pump, Black

## Features

- Indoor Use Only - This 1/3 HP WAYNE basement sump pump is perfect to keep your basement dry during heavy water flow. Whether it’s rain, snow melting, etc. WAYNE model CDU790 can pump up to 4,600 GPH to keep your basement dry.
- Tough And Durable - Corrosion-resistant epoxy coated steel motor housing and stainless steel fasteners come with a cast-iron volute that provides long life in tough sump pump applications.
- Efficient Design - The top suction design eliminates air lock and minimizes clogging from any debris in the bottom of the sump pit. Easy to install in about 15 minutes with no need to drill a weep hole!
- Quality You Deserve - Proudly assembled in the USA for quality you can trust. Warrantied for 3 years for dependable, efficient, & ultra-quiet performance.
- Quality You Deserve - Proudly assembled in the USA for quality you can trust. Warrantied for 3 years for dependable, efficient, & ultra-quiet performance.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Wayne |
| Color | Black |
| Material | Cast Iron |
| Style | 1/3 HP Coated Steel Sump Pump |
| Product Dimensions | 10.5"L x 9"W x 11"H |
| Power Source | Corded Electric |
| Item Weight | 16.4 Pounds |
| Maximum Flow Rate | 63 Gallons Per Minute |
| Voltage | 120 Volts |
| Horsepower | 0.3 Horsepower |
| Global Trade Identification Number | 00040066100016 |
| Manufacturer | Wayne Water Systems |
| UPC | 040066100016 784644738467 783324962109 |
| Specific Uses For Product | water pumpping |
| Part Number | CDU790 |
| Item Weight | 16.4 pounds |
| Item model number | CDU790 |
| Is Discontinued By Manufacturer | No |
| Size | 1/3 HP |
| Item Package Quantity | 1 |
| Number Of Pieces | 1 |
| Certification | Fully submersible |
| Included Components | Pump |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | 3 Year Limited |

## Product Details

- **Brand:** Wayne
- **Color:** Black
- **Material:** Cast Iron
- **Style:** 1/3 HP Coated Steel Sump Pump
- **Product Dimensions:** 10.5"L x 9"W x 11"H
- **Power Source:** Corded Electric
- **Item Weight:** 16.4 Pounds
- **Maximum Flow Rate:** 63 Gallons Per Minute
- **Voltage:** 120 Volts
- **Horsepower:** 0.3 Horsepower

## Images

![CDU790-1/3 HP Submersible Cast Iron and Stainless Steel Sump Pump with Integrated Vertical Float Switch - Up to 4,600 Gallons Per Hour - Heavy Duty Basement Sump Pump, Black - Image 1](https://m.media-amazon.com/images/I/71tKDT6EpzL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: 1) If I wanted to use a garden hose what kind of attatchment do you recommend?**
A: You would have reduce the 1 1/2 cvp pipe down to about 3/4 then attach threaded cuplin to screw the hose on. Reducing it down, don't know if hurt the pump.

**Q: This sump pump come with check valve ?**
A: This pump does not come with a check valve.

**Q: what kind of life would this pump have in a koi pond that runs 24/7 365. I have a savio skimmer. Had been using a dayton pump, but they are $$$.???**
A: The CDU790 is a sump pump designed for residential, indoor, ground water only, sump pit applications. We would not recommend using any sump pump continuously or in a pond with aquatic life. Thank you.

**Q: What type of water hose would be best for emptying a spa?**
A: Thank you for contacting us with your question. This unit is not for spas or pools. This unit is only for removing ground or rain water from a basement sump. We could not advise on products to use with the unit if it is being used in an environment that it was not designed for and would void all warranties. I apologize for the inconvenience. 
Thank you again,
Tina

## Customer Reviews

### ⭐⭐⭐⭐⭐ Well built, easy to install
*by J***D on February 25, 2025*

I recently installed the WAYNE CDU790 1/3 HP Submersible Sump Pump in my basement, and I couldn't be more impressed! This pump is incredibly reliable and does an amazing job keeping my basement dry. The heavy-duty construction with cast iron and stainless steel feels solid and durable, which gives me peace of mind knowing it's built to last.One of the standout features for me is how quiet it operates—no loud buzzing or noise that you often get with sump pumps. It’s perfect for keeping things peaceful in the basement, even when it’s running.Installation was a breeze! The pump comes with an integrated vertical float switch, which made the setup straightforward, even for a DIYer like me. I had it up and running in no time.

### ⭐⭐⭐⭐⭐ reliable and quiet
*by A***Y on July 26, 2025*

Great pump. Bought multiple these over the years. Reliable and quiet.

### ⭐⭐⭐⭐⭐ Worked Well But Like Everything Else It Has A Limited Lifespan
*by S***S on August 17, 2025*

Years ago, I installed a Wayne CDU 790 model to replace two older side-by-side pumps left behind by the previous owners of my house. (The previous owners relied on two pumps in the crawlspace because they had a serious water intrusion problem due to an improperly retired septic system. As the new owner, I mostly resolved that problem by having the old field lines dug up and smashed.)The Wayne pump lasted 13+ years (Feb 2012 - Aug 2025). Its main task was to pump out air conditioner condensate that accumulates during the summer season, as well as to pump out seepage following prolonged periods of rain.It lasted way, way beyond its warranty period. Eventually the float disconnected from the pump activation arm, and the bottom perimeter of the float had somehow badly deteriorated as well, permeated by holes all around. I only (and luckily) learned of these problems due to a recent "pre-vacation" check. The pump motor was still operational, but given the general level of deterioration overall, it seemed like it was time to retire the pump. Since this first unit lasted so long, I just installed another of the same model.I suppose that I should have proactively changed out the pump after about 10 years. Machines ultimately fail, and require periodic monitoring.

## Frequently Bought Together

- WAYNE CDU790 - 1/3 HP Submersible Cast Iron and Stainless Steel Sump Pump with Integrated Vertical Float Switch - Up to 4,600 Gallons Per Hour - Heavy Duty Basement Sump Pump, Black
- Wayne Pumps 66005-Wyn Check Valve, PVC
- PumpSpy Sump Pump Stand, Durable Sump Pump Stand that Prevents Sediment Buildup and Clogging, Stand for Sump Pump for Flooding Prevention, Increases Sump Pump Life, Compatible with Most Sump Pumps

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.co.th/products/12472284-cdu790-1-3-hp-submersible-cast-iron-and-stainless-steel](https://www.desertcart.co.th/products/12472284-cdu790-1-3-hp-submersible-cast-iron-and-stainless-steel)

---

*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-01-24*