Product Description
Durable Cast Iron Effluent Pump for Septic Systems and Light Commercial Wastewater Applications
Product Overview
The HCP Model F-21U Effluent Pump is a submersible unit used for septic tank effluent transfer, wastewater drainage, and industrial wastewater drainage. Commonly installed in commercial sumps and residential basins, it features a cast iron vortex impeller and a SUS304 stainless steel motor frame. This 1 HP effluent pump with a dual mechanical seal is suited for applications requiring robust solid handling capabilities. Cleanflow supplies this precise equipment for reliable wastewater management.
Key Benefits of the HCP Model F-21U Effluent Pumps
Delivers an efficient flow rate of 85 GPM at 10 feet of head.
Handles suspended solids up to 1-3/8 inches, making it effective for emptying septic tanks.
Extends operational life with a dual mechanical seal system (Carbon/Ceramic and SiC/SiC) in an oil-filled chamber.
Integrated thermal protection prevents motor damage during heavy use.
Features a 2-inch discharge for easy integration into low-pressure sewer systems.
Resists corrosion in harsh environments with a durable cast iron cover and stainless steel housing.
Compact design supports reliable installation in basement sump and effluent drainage systems.
HCP F-21U Submersible Effluent Pump Specifications
Category
Details
Model
F-21U
Horsepower
1 HP (0.75 kW)
Voltage
120V, 1 Phase, 60Hz
Discharge Size
2-inch NPT
Max Flow Rate
85 GPM @ 10' Head
Max Head
44 ft
Solid Handling
1-3/8 inch (35 mm)
Impeller Type
Vortex (U Type)
Cable Length
30 ft (9.1m)
Motor Speed
3420 RPM
Weight
Approx. 37 lbs (17 kg)
What’s Included
HCP Model F-21U Submersible Pump (f-21u)
30-ft Power Cable with 120V Plug
2-inch NPT Discharge Connection
Key Features of HCP Model F-21U Effluent Pumps
Vortex Impeller Effluent Pump Design
The semi-open U-type impeller creates a vortex flow, allowing stringy materials and solids to pass without clogging the pump.
Dual Mechanical Seals
Double seals (Carbon/Ceramic upper, Silicon Carbide lower) isolate the motor from the pumped liquid, essential for the durability of a 1 HP Submersible Effluent Pump.
Auto-Cut Thermal Protection
The built-in protector automatically shuts off the motor if it overheats or draws excessive current, preventing catastrophic failure.
Stainless Steel Motor Frame
The SUS304 motor housing provides superior corrosion resistance compared to standard cast iron, extending the unit's lifespan in aggressive fluids.
Epoxy Cable Base
The cable entry is sealed with epoxy resin to prevent moisture from wicking into the motor, a common failure point in submersible pumps.
Performance Overview
The HCP Model F-21U Effluent Pump delivers robust hydraulic performance, capable of passing 1-3/8 inch solids while maintaining significant head pressure. It operates effectively within its rated hydraulic performance range, delivering up to 85 GPM depending on system head conditions, making it suitable for high-demand intermittent duty cycles. The pump maintains efficiency even when lifting fluid against static head pressures up to 44 feet. The pump maintains reliable performance when lifting fluid against static head pressures up to 44 feet.
Applications
Septic tank effluent transfer applications
Low-pressure sewer system pump stations
Effluent pump for basement sump pits and wastewater drainage
Industrial Wastewater Drainage
Agricultural wastewater transfer
Emergency flood water removal
Commercial building sewage ejection
Common Use
Residential septic tanks
Factory drainage sumps
Utility vaults
Installation & Use Notes
Ensure the discharge pipe is sized (minimum 2 inches) to accommodate the solid handling capacity.
Do not operate the pump dry; ensure the motor remains submerged for proper cooling.
Verify the power source matches the 120V single-phase requirement before connection.
For automatic operation, an external float switch or control panel is required.
Regularly inspect the impeller for debris accumulation in septic or wastewater applications.
Accessories & Add-Ons
Pair with a SJE PumpMaster Plus Float Switch for reliable automatic level control.
Check valve 2-inch (recommended for sewage/effluent lines).
Your High-Quality Pumping Solution from Cleanflow
Cleanflow offers the HCP Model F-21U Effluent Pump, designed for contractors and facility managers seeking reliable infrastructure equipment. As a trusted supplier of submersible wastewater and effluent pumps, we provide genuine products with expert support and fast delivery. Find the right HCP pump for your drainage project at Cleanflow today.
Frequently Asked Questions
Can this pump handle raw sewage?
While it is an effluent pump, the F-21U handles solids up to 1-3/8 inches. For raw sewage with 2-inch solids, a dedicated sewage pump may be required, though this model handles light sewage and septic effluent effectively.
Does the F-21U come with a float switch?
The standard model described here is a manual pump. It can be converted to automatic operation by adding a compatible piggyback float switch.
What is the maximum head capacity?
The pump has a shut-off head of 44 feet. Flow rates decrease as the vertical lift increases.
Is this pump suitable for continuous duty?
Submersible effluent pumps are generally designed for intermittent duty. Consult the HCP F-21U Technical Specifications regarding duty cycles for specific industrial applications.
What is the voltage requirement?
This model operates on standard 120V single-phase power and includes a plug.
How does the vortex impeller work?
The vortex impeller design spins the liquid to create a whirlpool, allowing solids to exit the discharge without making direct contact with the impeller vanes, reducing clogging.
