Red Lion RL-33SC
#2 in Up to 1/3 HPFull review
For a small pit with a real lift, where a compact cast iron pump with strong flow is worth a little more.
Amazon $203.84$203.84
4.1/5
A strong value for an ordinary basement: more flow at 10 ft than most 1/3 HP pumps for a modest price.
- 1/3 HPMotor
- 3,060 GPHFlow at 10 ft
- Vertical floatSwitch
- 3 yearsWarranty
Check price at Amazon$136.90
Price checked October 31, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- About 3,000 gallons an hour at 10 ft, well ahead of most 1/3 HP pumps
- Low price per gallon pumped for a pump with a cast iron volute
- Top suction intake is less likely to clog on pit debris
- Vertical float works in an 11 in pit
Cons
- Steel motor housing can rust over time in a pit that stays wet
- Short 8 ft cord may need an outlet close to the pit
- Wayne does not publish its current draw, which matters for sizing a backup inverter
The Wayne CDU family
Every Wayne CDU model we rank, smallest first. Ratings compare each against its own size.
| Model | Motor | Rating | Price |
|---|---|---|---|
| Wayne CDU790 (this one) | 1/3 HP | 4.1/5 | $136.90 |
| Wayne CDU800 | 1/2 HP | 3.6/5 | $163.25 |
| Wayne CDU980E | 3/4 HP | 4.3/5 | $189 |
| Wayne CDU1000 | 1 HP | 4.3/5 | $254.99 |
How it scores
The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
Specifications
| Model number | CDU790 |
|---|---|
| Pumping | |
| Motor | 1/3 HP |
| Type | Submersible |
| Flow at 10 ft | 3,060 GPH |
| Flow at 0 ft | 4,600 GPH |
| Max lift | 22.5 ft |
| Discharge | 1.5 in |
| Switch and build | |
| Switch | Vertical float |
| Cast iron housing | No |
| Alarm or monitoring | No |
| Wi-Fi | No |
| Cord length | 8 ft |
| Weight | 22 lb |
| Warranty | 3 years |
Alternatives in this size
Little Giant 6EC-CIA-SFS
#3 in Up to 1/3 HPFull review
For a basement with a higher lift where a 1/3 HP pump with near 1/2 HP flow and a cast iron body is wanted.
Amazon $220.50$220.50
Wayne SPF33
#4 in Up to 1/3 HPFull review
A light, low cost pump for a shallow basement with modest water. The 1 year warranty makes it a budget pick rather than a long term one.
Amazon $128.20$128.20
Compare
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