
Heavy-Duty Pumps for Mud, Sludge and Site Water
Dirty-Water Drainage Pumps for Construction and Dewatering
CIMEX dirty-water drainage pumps are designed for demanding dewatering work where conventional clean-water pumps are unsuitable. They are used on construction sites, in mining and utility work, and for pumping muddy water, sludge, bentonite, silt and sand-laden water from excavations, trenches, shafts and tunnels.
Built for Harsh Working Conditions
The pump body is manufactured from robust cast iron selected for resistance to mechanical wear and abrasion. On applicable electric models, the pumped water passes between the outer casing and motor housing to provide forced cooling during operation.
Open Vortex Impeller
An open vortex impeller helps the pump handle fluids of varying consistency and water containing suspended solids. This design is suitable for applications involving sludge, bentonite, mud and sandy suspensions, while reducing the risk of blockage compared with a standard clean-water pump.
How to Choose a Drainage Pump
- Water contamination: check the permissible solids size and the type of material in the water.
- Flow rate: choose sufficient capacity for the volume that must be removed.
- Total head: allow for vertical lift, hose length and pressure losses.
- Construction: consider abrasion resistance, impeller design and suitability for continuous duty.
- Installation: select the correct outlet size, hose and electrical supply.
Typical Applications
These heavy-duty submersible drainage pumps are suitable for construction dewatering, flooded basements, utility shafts, mines, tunnelling, industrial sites and emergency drainage. Select the exact CIMEX model according to solids handling, flow rate, total head and operating environment.


