Product Description

The Wangen Type GL-S Pump

The Wangen Type GL-S Pump can address your needs for conveying substrate or loading the separators in the rigorous operation of your biogas plant.


Conveying Substrate

Pumps in biogas plants have to convey viscous substrate between the fermenters. We offer different types of pumps according to the substrate to be conveyed and the biogas plant in question. Our years-long experience enables us to develop practice-related solution concepts.

WANGEN pumps have robust designs because substrates are often highly viscous and have to be pumped over long distances. Supplemented with dry running protection, pressure gauges or flow meters, they display excellent performance even in automatic continuous duty.


Loading the Separators

WANGEN pumps perform special tasks in biogas plants such as loading the separators for separating solid and liquid phases.
Conveying the substrates with their mostly high dry substance contents (DS) requires sophisticated pump technology. Optimum pumping results are guaranteed by the flow-optimized suction housing and a constant joint diameter which prevents the plating of long fibers.

Wangen Type GL-S

Specifications of the Wangen Type GL-S

Performance Data

  • Flowrate: 25 – 120 m³/h
  • Maximum differential pressure: 6/12/18 bar

Benefits and Characteristics

  • Low Life Cycle Costs
  • High operational reliability
  • High priming capacity
  • Long service life
  • Good pumping performance even against high pressure
  • Rigorous modular principle for high flexibility, low stocking of spare parts, short downtimes for maintenance and repairs
  • Almost pulsation-free conveyance
  • Easy fitting to slurry tankers or trolleys
  • Smooth running thanks to hollow rotors
  • Insensitive to foreign matter
  • Easy to maintain thanks to large cleaning openings
  • High-pressure performance
  • High suction lift (self-priming)
  • Consistent diameters at joint connections for constant flow rates
  • No foreign body deposits in the suction housing
  • No tangling of fibers around the joint or joint connections
  • Rigorous modular principle for high flexibility
  • Optimum service life even with difficult media

Fields of Application

  • umbilical systems
  • irrigating
  • rinsing
  • For use as feeding, unloading and recirculation pump
  • filling
  • distributing
  • suction

Suitable for the Following Media

  • fertilizer
  • liquid manure from chicken
  • cattle slurry
  • liquid manure


  • Service-proven sealing systems
  • Hollow rotors for smooth running
  • Large variety of flange connections
  • Fully developed, robust universal joint
  • Suction housing with large inspection and cleaning openings
  • Various geometries and pump sizes
  • Stator with S-cone inlet for optimum filling of the pumping chamber
  • Driven by PTO or drive shaft with feather key
  • Safety and flexibility thanks to various additional features such as a pneumatic overflow unit, bypass and multi-way slide valve
  • Shaft seal (mechanical face seal with oil quench)
  • Double bearing arrangement with tapered roller bearings

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