Introduction

In the field of drainage, wastewater management, and water treatment, selecting the right pump is critical for ensuring performance efficiency and long service life. Among the leading solutions in this sector stands the Grundfos UNILIFT AP50B pump, available through Mohamed Harb Contracting Company in Egypt.
This article provides an in-depth look at the UNILIFT AP50B pump — exploring its specifications, advantages, applications, installation process, and maintenance — while highlighting why Mohamed Harb is a trusted distributor and service provider.
Overview of the UNILIFT AP50B Pump
The UNILIFT AP50B is a submersible stainless-steel pump designed to handle wastewater and liquids containing solids up to 50 mm in diameter.
It supports auto-coupling installation, which allows for easy service and maintenance without dismantling the entire system.
It’s an ideal choice for industrial sites, residential buildings, and facilities requiring reliable wastewater or flood water management systems.
🔗 References:
Technical Specifications
| Parameter | Specification | Source |
|---|---|---|
| Pump Casing | Stainless steel AISI 304 / DIN 1.4301 | Lenntech |
| Impeller Type | Vortex impeller (handles solids up to 50 mm) | PumpCatalog |
| Discharge Port | R 2″ (approx. 2 inches) | Lenntech |
| Max Head | 11–17 m depending on model | PumpSolutions |
| Max Flow Rate | Up to 31 m³/h (≈ 8.6 L/s) | PumpSolutions |
| Solid Handling Capacity | 50 mm | Lenntech |
| Max Submersion Depth | Up to 2 m | Envieq |
| Operation | Automatic (with float switch) on some models | PumpCatalog |
Note: Always verify the exact product code since voltage, cable length, and phase may differ among models.
Features and Benefits
• Durable Stainless-Steel Design
The pump’s corrosion-resistant body ensures exceptional strength and long operational life, even in harsh wastewater environments.
• Handles Solids Efficiently
With a vortex impeller capable of handling solids up to 50 mm, it’s perfect for wastewater and sewage systems.
• Easy Installation and Service
The auto-coupling system allows for convenient removal and maintenance without disconnecting the entire pipeline.
• Versatile Applications
Suitable for residential, commercial, or industrial use — offering flexible deployment in multiple environments.
• Proven Grundfos Reliability
Grundfos is globally known for engineering excellence and energy-efficient solutions, ensuring long-term reliability and peace of mind.
Applications and Ideal Uses
The UNILIFT AP50B is engineered for multiple wastewater-handling applications, such as:
-
Domestic or building wastewater systems.
-
Industrial and commercial drainage or sewage pumping.
-
Handling wastewater with light solid content.
-
Flood water or stormwater removal in basements or pits.
-
Installations requiring easy servicing and high reliability.
Installation and Operation
Installation Steps
-
Verify that the installation site meets the pump’s depth and temperature limits.
-
Connect the electrical supply (check voltage and phase).
-
Attach the discharge pipe (R 2″) securely to the system.
-
Install the float switch (if available) for automatic operation.
-
Ensure the base stand is stable and properly fixed.
-
Conduct a test run — monitor flow, pressure head, vibration, and noise.
Operating Tips
-
Maximum liquid temperature: up to 40 °C.
-
Regularly check water pH and salinity to prevent corrosion.
-
Ensure proper electrical insulation for all cables.
-
Keep the float switch unobstructed for smooth automatic control.
🔗 Reference: Grundfos Datasheet – Lenntech
Maintenance, Service, and Spare Parts
Routine Maintenance
-
Inspect the pump casing, cable, and discharge connections regularly.
-
Clean the inlet area or filter to avoid clogging.
-
Monitor noise or vibration levels; abnormal sounds may indicate impeller or bearing wear.
-
Check oil chamber levels if recommended by the manufacturer.
Common Spare Parts
-
Impeller and related components
-
O-rings and seals
-
Bearings or mechanical shaft seals
-
Power cable and float switch
Service with Mohamed Harb Contracting
Mohamed Harb Contracting offers full electromechanical services, including installation, maintenance, and spare parts for Grundfos pumps in Egypt.
Their local expertise ensures quick response, authentic parts, and professional support — keeping your system running efficiently with minimal downtime.
🔗 Company site: https://www.muhamedharb.com/
Why Choose Mohamed Harb Contracting?
-
Extensive experience in electromechanical and construction projects.
-
Authorized Grundfos partner providing genuine products and factory support.
-
Complete after-sales services: installation, maintenance, and performance checks.
-
Local presence in Egypt ensures faster delivery, technical support, and spare parts availability.
Conclusion
-
Choosing the Grundfos UNILIFT AP50B pump from Mohamed Harb Contracting means investing in a powerful, durable, and reliable wastewater solution.
Its stainless-steel design, vortex impeller, and auto-coupling installation make it one of the best-performing pumps for both domestic and industrial wastewater systems.With Mohamed Harb’s trusted expertise and professional maintenance services, you are guaranteed long-lasting efficiency, reliability, and peace of mind for your pumping systems.
References and Useful Links
-
Grundfos UNILIFT AP50B – Product Selection Guide
-
Grundfos Datasheet PDF – Lenntech
-
Pump Catalog Overview – PumpCatalog.com
-
Australian Distributor Details – PumpSolutions
-
Official Distributor in Egypt – Mohamed Harb Contracting



