Monarch ESP50AV Series Submersible Effluent Pump
Monarch ESP50AV Series Submersible Effluent Pump: Compact Power for Narrow Basins
The Monarch ESP50AV Series Submersible Effluent Pump is the ideal solution for effluent and dewatering applications where space is at a premium. Unlike standard tethered float pumps, the ESP50AV, Order Number 620178, utilizes a reliable vertical float switch, making it perfectly suited for narrow sump pits or septic tanks where a swinging float might get hung up on basin walls.
Engineered with a hybrid construction, the Monarch ESP50AV Series features a rugged cast iron motor housing for efficient heat dissipation paired with a corrosion-resistant molded polypropylene pump body. Powered by a continuous-duty, oil-free 1/2 HP motor, the ESP50AV is built to withstand the rigors of daily use while handling spherical solids up to 3/4 inch in diameter. Whether you are managing septic effluent or residential sump drainage, this pump delivers consistent and dependable performance backed by a 2-year warranty.
Key Features and Construction
- Vertical Float Switch: The “AV” model comes equipped with a vertical float switch, ensuring reliable automatic operation in smaller diameter basins (10″ or wider) without obstruction.
- Solid Handling: Capable of passing 3/4″ spherical solids, making it suitable for effluent and light sewage applications.
- Rugged Motor Housing: The cast iron motor housing draws heat away from the motor, preventing overheating during continuous use.
- Corrosion Resistant: The pump body is crafted from molded polypropylene to resist rust and chemical corrosion.
- Reliable Motor: Features a 115-volt, CSA-approved, thermal overload-protected “oil-free” motor. It runs on a stainless steel heat-treated shaft with upper and lower ball bearings.
- Durable Impeller: Reinforced polypropylene impeller includes a brass insert for added stability and durability.
- Extended Reach: Includes a 20 ft. power cord for easy connection to power sources.
- Standard Discharge: Features a 1 ½” NPT discharge for compatibility with standard piping.
Common Applications
- Narrow Sump Pits: Ideal for basins where tethered floats cannot operate freely.
- Septic Effluent: Pumping liquid waste to leach fields or mound systems.
- Basement Drainage: Reliable protection against flooding.
- General Dewatering: Transferring water containing small solids.
Technical Specifications & Performance
The following tables detail the performance capabilities and specific model configurations for the ESP50 Series.
Performance Chart
| PERFORMANCE CHART | ||||||
|---|---|---|---|---|---|---|
| Model No. | Total Head in Feet | Shut-Off Head (ft.) | ||||
| 5 | 10 | 15 | 20 | 25 | ||
| Capacities in U.S. GPM | ||||||
| ESP50 | – | – | 61 | 51 | 36 | 31 |
Submersible Sump/Effluent Pumps – 1 1/2″
| Model No. | Order No. | SFA | HP | Ship Wt. (lbs.) | Description |
|---|---|---|---|---|---|
| ESP50AM | 620187 | 6.7 | 1/2 | 24 | Automatic, with piggy-back float switch and 20 ft. cord. |
| ESP50AV | 620178 | 6.7 | 1/2 | 24 | Automatic, with vertical float switch, 20ft cord. |
| ESP50M | 620174 | 6.7 | 1/2 | 24 | Manual, with 20 ft. power cord. |
Dimensions
- Total Height: 12.42 inches
- Total Width (Base): 10.00 inches
- Discharge Height: 9.13 inches
- Motor Housing Width: 5.50 inches
Frequently Asked Questions
Why choose the ESP50AV over the ESP50AM?
What solids handling capability does this pump have?
Is the motor continuous duty?
Send us your model number and we will confirm fit, price, and availability.