Grundfos SE/SL series submersible sewage pumps are heavy-duty pumps specifically designed for sewage and wastewater treatment.
I. Core Features
Multi-functional Hydraulic Systems
Three hydraulic platform options are available:
SuperVortex impeller: Free-flow design, suitable for liquids with high solids content (≤5%), impeller can be cut and adjusted.
Closed S-tube® impeller: Large flow diameter, smooth flow curve.
Open S-tube® impeller: High efficiency, wide allowable operating range (AOR), impeller can be cut.
Intelligent Adjustment System
SmartTrim impeller clearance adjustment: Clearance can be adjusted via external screws without disassembling the pump body, maintaining optimal efficiency.
SmartSeal automatic coupling gasket: Leak-proof design, optimizes system efficiency.
Dual Sealing Protection
Box-type mechanical seal (silicon carbide/silicon carbide + carbon/ceramic combination)
Factory pre-installation testing reduces the risk of installation errors.
II. Structural Design Advantages
Wear-resistant material selection:
Standard version: Cast iron pump housing/impeller
Stainless steel (Q type): Cast iron pump housing + stainless steel impeller
White cast iron (W type): Customized solution with enhanced wear resistance
Motor characteristics:
Complies with IE3 high-efficiency standard, 2/4/6 pole motors available
Protection rating IP68, insulation class H (180℃)
Built-in sensor monitoring system (standard configuration includes thermal switch, humidity/leakage switch)
Modular design:
Customizable sensor version (Pt100) (0 temperature sensors, vibration sensors, etc.)
Supports EMC cable and inverter control (30-100% speed range)
III. Application Scenarios
Installation Flexibility
SE Pump: Dry installation (vertical/horizontal) or submersible installation, with cooling system
SL Pump: Submersible installation only, without cooling system
Multiple installation methods including automatic coupling/ring base/concrete base
Media Handling Capacity
Maximum particle size 35-125mm (depending on model)
Hydration pH Liquid pH 6.5-14 (Short-term tolerance to pH 4-14)
Liquid temperature 0-40℃ (Non-explosion-proof type, short-term tolerance to 60℃)
Optimized for professional scenarios
Explosion-proof model (ATEX/IECEx certified)
Ceramic coating option (High-wear conditions)
Duplex stainless steel impeller (Corrosive media)
IV. Intelligent Monitoring System
Built-in sensors
Standard version: 3 thermal switches + humidity/leakage switch
Advanced version: Pt1000 winding/bearing temperature sensor + vibration monitoring
Control unit compatible
Supports Grundfos DC/LC controllers
Can be connected to CUE frequency converters for PID control
MP204 motor protection module provided
V. Ease of maintenance
Maintenance-friendly design
Stainless steel sealed cable inlet
Motor liquid SML-3 antifreeze protection (-20℃)
Electrophoretic treatment + powder coating (150μm)
Testing and certification
ISO 9906:2012 3B-level factory testing
Optional witnessed testing/performance certificate
EN 10204 material certification
This series of pumps is particularly suitable for:
Municipal wastewater treatment plants
Industrial wastewater discharge
Storewater pumping stations
Transportation of media containing solids/fibers
With its modular design and extensive configuration options, it can meet diverse needs from routine drainage to harsh industrial scenarios.