Product Description
S Series Self Priming Pumps
S Series Self Priming Pumps provide dependable transfer of clean, dirty and solids-laden liquids in industrial, construction, agricultural and wastewater applications. Stanflo builds the range as horizontal, single-stage centrifugal pumps with open impellers.
Moreover, these self-priming solids-handling pumps can pass solids up to 76 mm, depending on the selected model. Therefore, they can move liquids that may block conventional centrifugal water pumps.
Reliable Self-Priming Performance
S Series Self Priming Pumps remove air from the suction line and establish liquid flow automatically after initial filling. As a result, users can install the pump above or beside the liquid source.
In addition, the Stanflo S Series can prime and re-prime from depths beyond 7.5 metres without a foot valve. However, operators must fill the pump casing before the first start and keep the suction pipe airtight.
Main Features
Open Impeller for Solids Handling
The open impeller allows wastewater, debris and suspended solids to move through the hydraulic section. Consequently, these S Series centrifugal pumps suit dirty-water transfer, construction dewatering and sewage-handling duties.
Published models provide solids passage from 15 to 76 mm. Therefore, users should confirm the permitted particle size for the selected pump before installation.
Replaceable Wear Plates
Abrasive particles gradually wear internal hydraulic surfaces. For this reason, Stanflo uses replaceable wear plates to protect the main pump structure.
Technicians can restore the correct internal clearance by replacing the worn plate instead of the complete casing. As a result, the design can reduce maintenance costs.
Easy Impeller Access
A large removable inspection cover provides direct access to the impeller. Therefore, maintenance teams can remove blockages without disconnecting the suction or discharge pipework.
Furthermore, this access simplifies inspection and speeds up maintenance.
Externally Lubricated Mechanical Seal
S Series Self Priming Pumps use externally lubricated mechanical seals with hard seal faces. The lubrication system protects the seal during short periods of temporary dry running.
Nevertheless, operators should avoid unnecessary extended dry operation because prolonged heat can damage the seal and other components.
Flexible Construction Options
Stanflo offers cast iron, stainless-steel-fitted and all-stainless-steel configurations. Consequently, engineers can choose materials that match the pumped liquid and site conditions.
In addition, Buna seal options support liquid temperatures up to 105°C, while selected Viton arrangements can support temperatures up to 150°C.
Published Model Range
The S Series pump selection includes:
- Connection sizes from 1½ to 12 inches
- Solids passage from 15 to 76 mm
- Motor ratings from 1.1 to 55 kW
- Cast iron and stainless steel configurations
- Different operating speeds and hydraulic duties
Moreover, selected models can deliver approximately 1,200 m³/h at suitable operating points. However, engineers should always select the final model from the official performance curve and calculated system head.
Typical Applications in the UAE
S Series Self Priming Pumps support a wide range of applications, including:
- Sewage and wastewater transfer
- Construction-site dewatering
- Civil engineering projects
- Mining water and slurry management
- Agricultural drainage and irrigation
- Waste-treatment facilities
- Marine and shipbuilding applications
- Industrial dirty-water transfer
- Liquids containing abrasive particles
Therefore, these self-priming dirty-water pumps provide a flexible solution where users need large solids passage and above-ground installation.
Selecting the Correct Pump
Users should select the correct S Series model according to the required flow rate, total discharge head, suction lift and maximum solids diameter.
In addition, they should consider liquid abrasiveness, temperature, motor power, construction material and suction pipe size. The suction line must remain airtight because air leakage can increase priming time and reduce performance.
Consequently, professional pump selection and correct installation improve efficiency, reduce wear and support reliable operation.
Why Choose S Series Self Priming Pumps?
S Series Self Priming Pumps combine strong self-priming capability with large solids passage, abrasion resistance and convenient maintenance access.
Moreover, the open impeller handles dirty liquids effectively, while replaceable wear plates protect the pump against abrasive wear. Meanwhile, the externally lubricated mechanical seal adds protection during demanding operation.
As a result, the Stanflo S Series provides a reliable solution for wastewater, mining, construction and agricultural projects across Dubai, Abu Dhabi, Sharjah and the wider UAE.
Request S Series Self Priming Pumps in the UAE
Contact Pumps UAE for assistance selecting the correct model.
Our team can review the required capacity, head, suction depth, solids size, liquid characteristics and construction materials. Therefore, we can recommend a suitable Stanflo self-priming pump for your application.




