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Dosing pump technology – hydraulic vs electric pumps
November 8, 2024

The techno genius of dosing pumps

Meticulously engineered to introduce liquid chemicals, supplements, and additives into a water flow at specified concentrations, dosing pumps are invaluable in irrigation and fertigation systems.

Efficient solutions for liquid injection

A proportional flow ensures additives are injected at a rate that changes in direct proportion to the water flow rate. As the dosing pump automatically adjusts the amount of additive it injects as water volume increases or decreases, concentration remains consistent. Farmers and horticulturists can provide the exact amount of additives precisely when crops or plants need them.

MixRite dosing pumps help optimise crop yield, minimise waste, and reduce potential environmental impacts from the overuse of fertilisers or other chemicals.

Dosing pump technology

Dosing pumps inject a specific volume of liquid, typically a percentage of the total water flow. The most common injection rates range from 1-2%, but our pumps can reduce the flow as low as 0.1% to over 10%. This flexibility makes them suitable for a variety of applications, from light supplementation to heavier mineral or nutrient dosages.

There are two primary types of dosing pump technology:

    1. Hydraulic Dosing Pumps
    2. Electric Dosing Pumps

Each type has advantages and ideal applications.

Hydraulic dosing pumps

Hydraulic dosing pumps, or water-powered dosing pumps, require no external power source. These pumps utilise the kinetic energy from the pressure of the main water flow to operate. This makes them especially useful in remote areas or locations with limited access to electricity.

They automatically adjust the injection level based on the flow rate. Hydraulic dosing pumps are unaffected by pressure fluctuations within the system. The injection also ceases when the water flow stops, preventing over-dosage or wastage.

  • Cost-effective: Hydraulic dosing pumps are generally more affordable than electric alternatives, reducing initial investment costs.
  • Simple installation, setup, and operation: With fewer components and straightforward mechanics, hydraulic dosing pumps are easy to install and require minimal setup.
  • No external power: Ideal for remote or off-grid locations where there is no power or electricity is unreliable.

Electric dosing pumps

Electric dosing pumps need a power source, typically 240VAC or 12VDC. We also have solar-powered options available. Being highly adjustable, farmers and horticulturalists can fine-tune the flow to deliver a precise amount of additive.

To achieve flow-proportional injection, additional devices such as an EV pulse water meter or a 4-20mA input are necessary. To begin pumping, electric dosing pumps need a 24VAC or 12VDC command from an irrigation controller, or a flow or pressure switch.

  • No added head loss: Electric pumps don’t add resistance to the mainline pressure, so pressure is maintained throughout the system.
  • Reliability with poor water quality: Electric dosing pumps are less vulnerable to issues from poor water quality, as they are not directly dependent on water flow for operation.

A dosing pump to meet your operational demands

The choice between hydraulic and electric dosing pumps depends on factors such as the availability of power, budget constraints, flow rate consistency, water quality, and the need for precise control.

Hydraulic dosing pumps offer a cost-effective and straightforward solution to your irrigation or fertigation systems. As they don’t need power, they are ideal for remote or off-grid applications.

Proportional dosing ensures simple, automatic adjustment based on flow. Hydraulic dosing pumps are best suited for systems where minimal adjustments are needed. Being more affordable upfront, they are a cost-effective choice for small-scale operations. They are ideal for a basic fertigation system where plants receive consistent fertilisation, for example.

Electric dosing pumps do not utilise the water flow for power. This makes them better suited for environments with variable water quality and where it is important to maintain main line pressure.

Because they offer high control with options for programmable rates, they are ideal for situations where varying doses are needed at specific times. Electric dosing pumps would suit an orchard with different nutrient requirements depending on seasonal needs or a greenhouse operation with varying nutrient needs. Growers can integrate electric dosing pumps with automated irrigation systems using flow or pressure switches.

Both types of dosing pumps deliver reliable and efficient solutions for ferigation systems. However, it is important to note that neither type should run dry for extended periods. Water is required to lubricate the seals and other moving parts.

MixRite’s engineering, materials, and design make it the right choice

The choice between MixRite hydraulic and electric dosing pumps ultimately depends on the specific needs of the irrigation or fertigation system. We can work with you to understand the operational demands of your garden, farm, orchard or greenhouse to make sure you get the ongoing precision and efficiency you need to grow.

MixRite dosing pumps – the preferred choice when accuracy, affordability and longevity are what you’re looking for to make your operation grow.

fertigation in orchard