Venturi injectors are the essential devices for dozing or fertilizer applications in large commercial farms. By working as integral components of drip irrigation systems, these devices enhance efficiency in fertilizer use and, in the end, save on cost.

We deal with the supply of quality irrigation accessories, which consist of venturi fertilizer injectors sold at affordable prices.

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Venturi | Fertilizer Dosing Kit for Sale

High quality venturi injectors are available at Aqua Hub for affordable prices in Kenya. We have sizes of ¾ , 1’’, 1 ¼ ” and 2”.

Cost of Venturi Injectors in Kenya

The cost of Venturi Injectors in Kenya starts from KES 1,500 to KES 5,000 as per the size and flow rate.

Why Venturi Injectors are Recommended for Dosing

Precision and Uniformity in fertigation: Manual application of fertilizer often causes low uniformity leading to unbalanced growth and production. Fertigation device ensures that every crop on the drip irrigated plant line receives adequate fertilizer rate which leads to proper yield.

Efficiency in production: with this device in use, direct nutrient delivery to the roots zones ensures no leaching and wastage of fertilizer.

Cost saving: efficient fertilizer use reduces the cost of inputs and labor needs.

Low Environment Pollution: maximum fertilizer uptake by target root zone application reduces nutrient removal by runoff thus reducing water pollution.

Ease of Connection and Use: venturi device is simple to connect to drip irrigation system and implement in fertigation. Once setup, it works on its own by applying pressure differential mechanism to suction fertilizer to the system.

Versatile Fertilizer Use: they are compatible with a wide range of soluble fertilizer inputs or chemical pesticides. Enhances input of fertilizers at different growth stages of planting. Common soluble fertilizers like NPK, calcium nitrate, potassium nitrate, mono potassium phosphate, and urea (CAN) can be effectively applied.

How to Use Venturi Injectors

• Depending on the crop and growth stage of your plant, choose the ideal fertilizer. Should be soluble in this case. for clarity, consult your agronomist.
• Determine the ratio of fertilizer and water by considering crop population, growth stage and crop type. Again, consult agronomists.
• Prepare the fertilizer mixture in a bucket using clean water to ensure no debris and homogenous solution.
• Most venturi injectors come with adjustable knobs for control of injection rate.
• Turn on your drip irrigation system to allow suction of the fertilizer solution as water flows through the system.
• Always check the device to ensure no clogs. Clean it when necessary to ensure consistency in water and fertilizer distribution.

Venturi Injector Selection: What are the Main Considerations?

• Flow Rate of Your Irrigation System: the flow rate of your injector should match that of your main irrigation line to create the necessary pressure differential for suction. An injector that’s too large won’t generate enough vacuum, while one that’s too small will restrict water flow.
• Pressure Differential: Venturi injectors require a certain pressure drop between their inlet and outlet to function correctly. A typical requirement is a 25-30% pressure differential. Installing pressure gauges before and after the injector can help you monitor this.
• Material Compatibility: Ensure the injector’s construction material (often high-grade plastic like PP or PVDF) is resistant to the fertilizers and chemicals you plan to use to prevent corrosion and extend its lifespan.
• Bypass vs. In-line Installation: While some Venturi injectors can be installed directly in the main line, a bypass assembly is generally recommended. This allows for greater control over the injection rate and minimizes pressure loss in the main line, especially if the injector needs to be taken offline for maintenance.
• Manufacturer Specifications: Always refer to the manufacturer’s performance charts to ensure the chosen injector meets your specific flow and pressure requirements. Reputable brands offer a range of sizes to suit various farming scales.
• Cost: the price range for different venturi injector sizes should also correspond to your budget.

Installation and Maintenance

The Venturi must be installed on a bypass assembly to allow high control for adjustment of the flow rate. It should be installed in a horizontal or vertical position ensuring the arrow indicating flow faces the direction of flow. Use valves and fittings with same size of injector’s threads to prevent water flow restriction.

Use thread sealant tape when connecting the injector to piping to ensure airtight seals. Avoid Using a pre-filter on your main irrigation line and a strainer on the suction line is crucial to prevent debris from entering and clogging the injector. A pressure gauge is also essential at the inlet for regulation of pressure of flow.

Benefits of Venturi Injectors over manual Fertilizer Application

• Highly Efficient – it has no moving parts, and thus has no risk of failure, wear or tear.
• Durable: fertilizer injectors are made from UV treated plastic material, do not get damaged by sunlight.
• Self-priming – suction made when water flows enable the device to prime or start fertilizer flow into the drip system.
• Proportional dosing ratio – fertilizer injection rate is proportional to the water flow rate.
• Uniform application rate – the device enhances equal fertilizer ration over all crops.
• Low wastage – due to optimal fertilizer application wastage is greatly reduced.

Maintenance of Venturi Fertilizer Kits

• Check for Air Leaks: Any air leaks in the suction line will significantly reduce or eliminate the vacuum, preventing fertilizer injection. Inspect connections regularly.
• Monitor Pressure: Pressure gauges at the inlet and outlet of the injector help you monitor the pressure differential and ensure optimal operation.
• Regular Cleaning: frequently clean the fertilizer device to remove fertilizer residue that can clog it.