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Water & Effluent Transfer Pumps

Verderhus Screw Channel Pumps

The Verderhus Screw Channel Pump has an open channel impeller design, when combined with the centrifugal force offers high flow rates and huge efficiency. 

Features of the Verderhus Screw Channel Pump include: 

  • high efficiency, DEP > 70%
  • handle solids up to 13%
  • flow range max 1500 m3/h
  • head max 75 mwx
  • insensible for clogging, also when pumping long fibred fluids
  • insensitive for viscosity changes
  • suitable for gas containing media
  • low energy cost, almost constant - also at high flow rates
  • low maintenance cost
  • double mechanical seal with controllable oil chamber



The DrainAce Compact is commonly found in restaurants, basements of high-rise buildings, boardrooms, laboratories, doctor or dental surgeries, construction sites and portable buildings. Units are also available for greasy waste discharge from grease arrestors. 


The Verderhus Screw Channel Pump is suitable for the following applications: 

  • sewage water treatment plants 
  • wastewater treatment plants 
  • paper industry 
  • food 
  • agriculture
  • circulation of biogas
  • coal-fired, oil-fired and nuclear power plants
  • composting and recycling processes
  • slaughter houses
  • sugar industry
  • beverage industry
  • sewage sludge recirculation
  • sewage thickening systems
  • gelatin manufacture
  • pet food
  • breweries & malteries
  • waste burning power station




The Verderhus pump was developed to be highly efficient and offer low operation costs. The special impeller ensures a high efficiency, also when pumping thicker fluids, and a wide passage/outlet. The solid design of the pump also reduces maintenance costs.

This screw channel pump includes an impeller that is formed as a corkscrew, within a cone-shaped casing. Through the rotation of the screw, the fluid is literally being pushed away. The cone form of this pump ensures a blockage free operation.

Materials of construction
  • wear resistant double mechanical seal with oil chamber, in standard execution with hard metal seal surfaces at the fluid state 
  • gland packing 

IEC motors are standard with the Verderhus series. However, a wide variety of motor choices are available if your application requires it. 


There are a wide variety of options available for the Verderhus range, to ensure abrasive, corrosive and cavitation resistance.

The GPT can be used to protect pumping chambers and down-stream stormwater detention tanks or treatment devices. Multiple units can be installed to ensure effective site coverage and maximise first flush catchment.  

Based on Global Water’s proven glass-reinforced concrete (GRC) 600 mm x 600 mm sumps, the EcoTreat GPT offers optimum versatility, with the outlet able to be installed on-site at any invert to suit site requirements.  

A galvanized grate suitable for pedestrian or light vehicle traffic is supplied as standard. A heavy-duty grate is available as an option.

Enquire here for more information or to request a quote: