Venturi Fertigation System


Grekkon Limited’s venturi fertigation system has a bypass, a water pump, and a suction assembly. Our venturi fertigation system is an easy way of crop fertigation and pesticide drenching through the existing drip irrigation system. This fertigation system works without external energy

Steps to how a venturi fertigation system works

  • There is a pressure difference created between the inlet and outlet to create a vacuum to initiate suction at the intake port
  • Water moving into the injector system speeds up as it enters a constricted channel of the injector, causing a reduction of pressure.
  • The reduction in water pressure causes fertilizer to rise up through the suction assembly into the water channel.
  • The difference between the inlet side of the injector and the outlet is small, thus creating a small vacuum. The result is the creation of suction.
  • Where the difference in pressure is sizeable, a larger vacuum is created, resulting in a larger suction.


Venturi fertigation system

Advantages of Grekkon Limited’s venturi fertigation system

  • Has uniform injection rate from start to finish
  • You can regulate the rate of flow of fertilizer or chemical
  • It is cost-effective as there is no external energy spent
  • Quick and easy installation.
  • Zero maintenance cost

How to select a venturi fertigation system

  1. Size

    When selecting a venturi injector, take a size that matches the size of your drip irrigation system. Consider one that matches your irrigation water flow rate. Generally, a small-sized injector system will restrict the flow of the system, while an oversized system will have difficulties drawing fertilizers into the irrigation system.
    Venturi injectors come in different sizes as ½’, 3/4′, 1’, 1-1/4, 1-1/2; and to 2’’.  ½’’ to 1- 1/4’’  are the most popular with small and medium holder drip irrigation farmers. 1-1/2″ – 2″ are for large farms

  2. Model

    Use a model from a reputable manufacturer and supplier like Grekkon Limited.

When installing venturi injectors

The injector outlet must remain flooded for it to work effectively

Always install the injector in a vertically upward position, with the outlet above.

What is the cost of a venturi fertigation system?

1. ½’’  Kes. 2,500
2. ¾’’ Kes 4,800

3. 1” Kes 5,500

We supply the most efficient and affordable venturi fertigation system in Kenya.

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Established in 2017, Grekkon Limited is a Kenyan agribusiness company. It specialises in the provision of; - Irrigation systems - Greenhouse construction - Dam liners installation - Water pumps - Solar dryers construction - Agriculture nets - Borehole drilling The company has operations offices in Nairobi, Mombasa, Kisumu, Eldoret, Nyeri, Meru, and Nyahururu

Comments (11)

  • The most important thing that was required here is what exactly is venturi fertilizer injector. You should have mentioned that for a common person, it’s hard to understand without knowing what a venturi fertilizer injector is.

  • Goodday
    Do you despatch your venturi injector kits to other countries.

    Clinton Law
    • Good afternoon Clinton,

      Yes we do export ur venturi fertigation systems in Kenya to other countries

      Best regards
      Customer Service

      • Thanks for your reply.
        Please advise what the total cost will be – including shipping to Australia – in Australian dollars

        • Good afternoon Clinton,

          Procure there locally; it’s easier

          Best regards,
          Customer Service

  • 1 inch venchuri

    • Good morning Umang,

      Our 1″ Venturi fertigation system cost in Kenya is Kes 5,500

      Best regards,
      Customer Service

  • I am Joash ,I wanna make the following inquiries
    What are the costs of 3/4 and 1 inch venturi

    • Dear Joash,

      The prices for the complete venturi system are Kes 4,800, and Kes 5,500 for 3/4″, and 1″ respectively.

      Best regards,
      Customer Service

  • Hi. Please help me design Fertigation System.

    • Dear Archie,

      Thank you for your enquiry. This will be done. Share with us your contact number on

      Best regards,

      Customer Service


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