Wastewater Management SolutionsAdvisory Services and Products

Pumps Unlimited provides advisory services and products for irrigation and agricultural, municipal and industrial waste water management solutions in Southern Africa.
Our systems are low maintenance, efficient and cost effective. We strive to achieve Department of Water Affairs and Forestry (DWAF) water quality standards through environment friendly bio-remediation rather than chemical solutions.

Waste Water TreatmentMazzei AirJection™ sets new standards for oxygen transfer efficiency.

Wastewater is pumped through one or more high efficiency Mazzei® Injectors, forcing air or oxygen to aspirate into the wastewater.

The resulting gas-water mixture is discharged back into the basin through Mazzei® Mass Transfer Multiplier™ (MTM) Nozzles for greater oxygen transfer.

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Chemical and Fertilizer Injection

Pumps Unlimited assists clients with irrigation design and recommendations based on individual requirement. We supply and install venturi-type, patented Mazzei® injectors for injecting fertilisers, chemicals, ozone gas, air, or oxygen into pressurised water systems.

Mazzei® Injectors are high-efficiency differential pressure injectors with internal mixing vanes.

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Soil Aeration

Improve soil aeration by entraining air in the form of micro-bubbles into irrigation water delivered through sub-surface drip irrigation using Mazzei AirJection® Irrigation Injectors.

The added air improves growing conditions by increasing root respiration and microbial activity. These improved soil conditions have shown significant increase in yields.

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We supply a big range ofInstruments

Pumps Unlimited supplies a big range of quality analytical instruments, probes and chemical testing kits for field and bench use by Hanna.

  • Colorimeters
  • Conductivity and TDS Meters
  • Combination Meters
  • pH & ORP Electrodes
  • ORP – Redox Meters
  • pH Meters

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  • Mazzei Injectors
  • Mazzei Venturi Injectors
  • Fertiliser Injectors
  • Fertiliser Venturi Injectors
  • Air Injectors
  • Effluent Aeration
  • BOD/COD Reduction
  • Winery Effluent
  • Piggery Effluent
  • Abbatoir waste water

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PumpsPumps Unlimited supplies and installs bore-hole, agricultural, domestic and industrial pumps

  • Stainless steel multistage centrifugal pumps
  • Self-priming Peripheral pumps
  • Vertical mono-block multistage pumps
  • Self-priming “JET” pumps
  • Submersible pumps
  • Submersible drainage pumps

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Metric Injector Performance Tables

Download the Mazzei Injector Corporation Performance Tables