Installed Allerton dirty water pump station in Lincolnshire

The Allerton Dual Dirty Water Pump Station

The Allerton Dual Dirty Water Pump Station is recommended for applications where gravity flow is not available. Pumping treated effluent from septic tanks, treatment plants, stormwater, surface water and drainage. Contact Allerton for sizing information.

Why use our Dual Dirty Water Pump Station?

  • The pump chambers are manufactured from high quality glass reinforced plastic and in accordance with our BS EN ISO9001:2000 quality management system.
  • Single phase and three phase pumps available.
  • The Allerton Dual Dirty Water Pumping Station is delivered complete with the pipework and valves pre-assembled in the tank, ready for immediate installation into the ground.
  • High-level alarm included.
  • 1 year warranty on all working parts.
  • Wide range of diameters and depths of tanks available to satisfy the storage requirements in part H of the Building Regs.
  • Low maintenance costs, servicing once a year.
  • Custom made dual dirty water pumping stations available upon request.
  • Pump Station Servicing and Maintenance, Installation and Commissioning service available by our highly trained engineers.

How our Dual Dirty Water Pump Station works

See illustration below.¹

Allerton dual dirty water pump station illustration, Lincolnshire

  1. Galvanised Access Cover
  2. GRP Tank
  3. Inlet Pipe
  4. High Level Alarm Float
  5. Control Panel
  6. Quick Release Coupling
  7. Isolation Valve
  8. Non Return Valve
  9. Submerged Pump with Integral Float


As the level of the liquid rises in the chamber the integral floats are factory set at the same level, both pumps start and pump the liquid out of the chamber until the pump floats drop and the pumps turn off. 

The level of the liquid will again rise and the above sequence is repeated. As both pumps are activated each time this ensures equal wear to both pumps.

If the pump fails to pump, the liquid level will rise to activate the high level float and the high level alarm light will be illuminated.

¹ Allerton Dual Dirty Water Pump Station illustration is not drawn to scale.


Dimensions (mm)

Allerton dual dirty water pumping station diagram

CAPACITY / P/E* 0 5 12 20 27 44
(A) INLET 500 1000 1000 500  1000  500
(B) BELOW INLET 900 1400 2000 3000 2000  3000 
(C) HEIGHT 1400 2400 3000 3500 3000  3500 
(D) DIAMETER 1000 1000 1200 1200  1800 1800 
(E) OUTLET 350 350 350 350  350 350 
*Population Equivalent

Download our Dual Dirty Water Pump Station specification

Adobe pdf

Alternative Pumping Stations

Servicing and Maintenance


Allerton reserves the right to alter the Dual Dirty Water Pump Station specifications and dimensions without notice. 


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