Agricultural Irrigation Filters

Afriq Water Online Store - Irrigation Filters

Pricelist

Brochure

When deciding which filter to install, the following factors should be considered:

The source of the water
The level of filth in the water (the density of pollutants)
Flow rate of water
Diameter of pump outlet

Consider the cubic meters that needs to be filtered per hour (m³/hr). You can either go for a big filter at the start of your system, directly from the water source, or smaller filters at the start of each individual block.

Our In-Line Y-Type Filters come in three sizes: MINI, MIDI, and +PLUS. The flow rate as well as the connection size is determined by the filter size chosen.

Both the Single and Double Plastic Filters comes in a "long" and "short" version. The long filter has more filtration area and should be used for dirtier water to extend the time between cleaning cycles, whereas the shorter filter can be used with cleaner water.

To calculate the cubic meter required, you'll have to use the pump as a guide. Use the max-rated flow rate of your pump as the minimum size and upsize to the next size filter. If your pump is rated to deliver 40 000 litres per hour, you will need a filter that can accommodate a minimum of 40 m³/hr.

E.g. if you have 30 cm spacing for a field with 18 lines of 100 meters each, with a flow rate of 2 litre/h per emitter, you can use the following equation to determine your filter size:

[(1m/.3 spacing) x 100 (Length of the dripline)] x 18 lines
[3.33 x 100] x 18
5994 emittersr
5994 emitters @ 2 ℓ/hr per emitter
11988 ℓ/hr flow rate for the entire field.

You will need a filter that can accommodate at least 12m³/hr, but it will be advised to use one size up which is the 15m³/hr Y-Type Filter.

Screen Filters

Remove the flushing cap and run a stream of water through the filter for all the "bigger" pieces to flush out.
Remove the screen cartridge by removing the top of the filter and unscrewing the cartridge. Pull out and wash by hand with dishwashing liquid.

Disc Filters

Remove the flushing cap and run a stream of water through the filter for all the "bigger" pieces to flush out.
Remove the disc cartridge by removing the top of the filter, unscrewing the cartridge, and pulling it out. The layers of the disc filter will loosen, and you'll be able to clean between the discs with dishwashing liquid. When you insert and tighten the cartridge, the discs will come back together.

Installing a filter or filters into an existing irrigation system is a quick and easy process. The filter can be inserted at any stage between the water source and the sprinklers/dripline.

The use of liquid fertilizers to boost your yield and ensure a healthy crop is a necessary practice in modern agriculture for many farmers and works well with your sprinkler or drip irrigation system, and can be used with your filter system.

The fertilizer tank should be installed before the filter, as undissolved fertiliser particles can cause blockages at the emitters.

Filters are essential in aiding farmers in removing 4 big culprits:

Solids:

Farmers who spread solids through their irrigation systems, like manure, can prevent large particles from entering their irrigation systems or lines.

Sand:

Even if the irrigation system can handle sand without clogging, that sand will cause damage to the interior walls of your pipes as it's flushed through the system, reducing your pipe's durability and longevity.

Algae and slime:

Will block your sprinkler heads and emitters. When algae grow on the inner walls of your irrigation system, over time that algae will catch any sand, dirt or organic particles and create blockages in your system that is nearly impossible to find and remove.

Dirt, debris and organic materials

Lots of farmers irrigate their fields by use of a dam or river. These sources have a naturally high level of pollutants. A filter is absolutely essential in this case, and the more filters available, the better.

The Types of Filters

When deciding between a disc and screen filter, consider the quality of the source of water. If you are mainly concerned with sand and bigger debris, a filter with a screen cartridge (or screen filter) will be enough. If you are also concerned with algae and other organic material, a filter with a disc cartridge (or disc filter) would be better suited to your needs.

Screen Filters

Screen cartridges are the most common filters and are excellent to remove hard particles such as sand.

They are not ideal to remove organic materials such as algae and slime. These non-solid materials tend to embed themselves into the screen material where they are very difficult to remove or they simply slide through the holes in the screen.

Disc Filters

Disc cartridges are good at removing both particulates, like sand and organic matter.

A disc filter consists of a stack of round discs. The discs have minuscule spaces between them when stacked together. The water is forced between the spaces between the discs, and the particulates are filtered out because they won't fit through these gaps. The organics are snagged in between the discs.