Wayne CDU790
#1 in Up to 1/3 HPFull review
A strong value for an ordinary basement: more flow at 10 ft than most 1/3 HP pumps for a modest price.
Amazon $136.90$136.90
3.7/5
For a small pit with a real lift, where a compact cast iron pump with strong flow is worth a little more.
- 1/3 HPMotor
- 3,000 GPHFlow at 10 ft
- Tethered floatSwitch
- 3 yearsWarranty
Check price at Amazon$203.84
Price checked October 31, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- About 3,000 gallons an hour at 10 ft, near 1/2 HP flow from a 1/3 HP pump
- Cast iron build sheds heat for long run times
- Guarded float fits a pit as small as 11 in
- Three year warranty
Cons
- Costs more than many 1/2 HP pumps
- Red Lion does not publish the pump’s weight
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 | RL-33SC (14942652) |
|---|---|
| Pumping | |
| Motor | 1/3 HP |
| Type | Submersible |
| Flow at 10 ft | 3,000 GPH |
| Flow at 0 ft | 3,420 GPH |
| Max lift | 28 ft |
| Discharge | 1.5 in |
| Running current | 5 A |
| Switch and build | |
| Switch | Tethered float |
| Cast iron housing | Yes |
| Alarm or monitoring | No |
| Wi-Fi | No |
| Cord length | 10 ft |
| 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
Compare the Red Lion RL-33SC with any other sump pump →
More from Red Lion: every Red Lion product ranked.