Filson Irrigation Screens

Your Exclusive Irrigation Screen Designer and Manufacturer In China

Filson irrigation screen, also named irrigation pump intake screen, irrigation suction screen, is usually divided into a variety of types: irrigation pump screen, irrigation canal screen, irrigation bubbler screen, irrigation pump suction screen.

Filson irrigation screen is a perfect option for irrigation systems to treat river or canal water sources. Standard irrigation screens manufactured by Filson are made of SS 304/316L screen fabric covering, with standard flanged connections.

With durable and low maintenance advantages, Filson irrigation screen can be cleaned easily by several cleaning methods. Common cleaning ways include flushing with water, biologically friendly solution, or clean the screen surface manually. Besides, backwashing is available.

Filson irrigation screens offer preeminent debris removing ability to help you obtain more dependable water from your source. We will provide professional and comprehensive support to minimize operational costs for your filtration project.

Contact us with your special requirements now!

Irrigation Screens: The Ultimate FAQ Guide

I know choosing a suitable irrigation screen can be an overwhelming task.

A reason this guide will take you through all the vital aspects you need to know about irrigation screens.

So, keep reading to learn more.

How Long Does Irrigation Screen Controller Last?

A well maintained irrigation controller can last between 10 to 15 years. The wiring needs to be regularly checked due to corrosion.

irrigation screen

What Are The Types Of Irrigation Screen Filters?

There are different types of irrigation filters currently in use. They include:

Screen Filter

These are the least costly filters available and are the most commonly used.

Their main purpose is to separate fine particles and sand from the water used for irrigation or similar industrial uses.

screen filter

The screen medium includes materials such as polyester, nylon, stainless steel and polypropylene.

Such materials are highly recommended for the extraction of algae and other organic matter.

Screen filters are popular in recirculating Irrigation systems because of their distinct ability to extract impurities from water before they percolate their nutrients into water.

Cleaning screen Filters includes flushing a stream of water in them or cleaning the screen by hand after removing it.

Disk Filter

These filters are almost the same as the screen filter with the exception of a filter cartridge that is composed of a number of discs.

These discs are placed on top of each other in a pile.

It works by having water flow through the tiny grooves in between thereby having the impurities confined from behind.

disk filter

Their performance is very exceptional and cleaning them is quite easy.

They are resistant to UV and they have an optimum pressure drop of 0.5 kg/cm² maximum.

They are preferred in the removal of organic matter and particulates like sand granules.

Disc Filters are commonly utilized in sprinkler and drip irrigation.

For efficient results, they can be combined with Screen Filters in Irrigation Screens.

Sand Or Gravel Filter

If the source of irrigation water is a canal, pond or river source, then sand/gravel filters are majorly utilized in the removal of organic debris from these sources.

The amount of sand used in the filter will determine the filtration level.

sand and gravel filter

Hydrocyclone Filter

They are majorly utilized in irrigation systems to eradicate sand and particles of silt from the water.

It is fabricated from mild steel and its design allows it to hydro-dynamically designed for the creation of maximum centrifugal operations for separation of debris that are heavier than water.

Its operating pressure is 10 kg/cm² at maximum with the ability to get rid of particles of silt and sand that are 75 Microns and above in size.

They also have to possess a specific gravity of 2.65 or more.

hydroclone filter

What Is Mesh Filter In Irrigation Screens?

Filters can be described as porous materials whose sole purpose is to sieve impurities and foreign particles from liquids.

Mesh filters in Irrigation Screens can be described as a network of wires that are placed to create a flexible filter cloth.

This filter cloth has accurate and rigid pore openings that can be custom tailored to fit into various filter systems.

mesh filter

What Is The Operation Procedure Of Hydrocyclones In Irrigation Screens?

Hydrocyclones in Irrigation Screens use the basis of physical separation as its mode of operation.

This occurs when particles with a much higher specific weight than water are retained because of the effect of centrifugal force.

The centrifugal force effect occurs when water is fed into the separator at extremely high velocity on a tangential trajectory.

The particles get stuck on the hydrocyclone walls and fall at its base where a tank is located for their collection.

The separated water then exits the hydrocyclone through an outlet channel where it will go to be filtered.

The position placement of the hydrocyclone must be in a vertical position always.

The entire operation does not need to be dismantled in order to clean it.

The discharged particles that accumulate in the purge tank must frequently be removed and the tank cleaned.

How Do Automatic Irrigation Mesh Filters Compare To Manual Irrigation Mesh Filters?

Automatic screen filters have the ability to provide the perfect operation for irrigation screens.

They have an enlarged filtration area with the self-cleaning mechanism that reduces the maintenance required.

Manual Screen filters serve the same function as automatic screen filters.

The only difference is that the debris from the screen has to be removed and cleaned physically.

How Does Two-Dimensional Irrigation Screen Mesh Filter Compare To Three Dimensional Irrigation Screen Mesh Filter?

Heat/Corrosion Resistance

The manufacturing process of 3D irrigation screen mesh filter is unique and makes it available in a variety of alloys resistant to temperature and corrosion.

Such alloys include Titanium, Alloy 310 and Super duplex.

2D irrigation screen mesh filter has tight characteristics hence very fine wires are required to manufacture it.

Weaving this filter with alloys that are resistant to temperature and corrosion is impossible.

Service Life

The 3D filter cloth structure depth enables it to achieve very separation efficiencies that are very high without binding rapidly.

This that between the cleaning intervals, extended cycles of filtration can be achieved.

This means that 3D filters have a longer filter service life compared to 2D filters.

Durability

2D irrigation screen mesh filter is thicker with a mechanically tough characteristic compared to 3D filter.

The distribution of their tight pores ensures an exact separation effect therefore it can be easily scrapped while maintaining the mesh specifications integrity.

Flow Rate

3D irrigation screen mesh filter has double the number of pore openings created by its form. This means that they deliver permeability twice what any 2D filter can deliver having similar pore sizes.

What Is Mesh Filtration In Irrigation Screens?

This is the use of a system of metallic woven wires called a mesh to filter irrigation water.

The woven wires form a flexible filter cloth with exact, stiff pore openings that sieve out the impurities and debris from the water.

What Are Screen Filters In Irrigation Screens?

Screen Filters are a regular form of filtration medium applicable in irrigation.

They are cheap, compact and modest devices that come in a variety of micron ratings and sizes with very minimal onsite preparation.

Their efficiency is outstanding over a wide variety of water flows and quality.

screen filter

They are normally made of metal, synthetic cloth or plastic bounded in a distinct housing.

What Are The Advantages Of Using Metal Mesh In Irrigation Screens?

Metal Mesh can deliver the following advantages when used in Irrigation Screens:

Flow Rate

This is the most significant merit that metal mesh has compared to other media used in filtration.

It can convey sufficient flow rate since its mesh openings and the wire diameters have been tailored to seamlessly match the particles being filtered out.

This property ensures it provides an efficient filtration surface area level.

This is mostly applicable with three-dimensional metal mesh filters since two filter clothes are offset thus the achievable flow rate is doubled.

Durability

Metal mesh is predominantly manufactured using the 300 series stainless steel.

This enables the filter to withstand a variety of extremities such as extreme temperature ranges, variations in pressure and impurities.

These extreme conditions tend to interfere with the accuracy of the mesh filter.

Additionally, pliability of stainless steel allows it to be formed in such a way that it can perfectly fit in the filter system and retain its shape for long.

Accuracy

The process of manufacturing metal meshes is heavily monitored from the beginning to the end. This results in uniform pore openings which are exact throughout the filter.

The result of precise pore openings is consistent filtered end product that is compliant with the industry standards and regulations.

Cleanability

Blinding and plugging in metal mesh is considerably reduced due to the accuracy of its pore openings.

How Does Disc Filter Compare To Screen Filter In Irrigation Screens?

The two types of filter elements are discs and screens. The choice of use will depend on the debris being removed from the system.

Disc filters are efficient at performance compared to screen filters when the filtration involves organic matter, algae or moss.

Their design allows them to efficiently filter fine particles like bacteria and chemical sludge.

Cleaning disc filters involves disassembling and spraying them down.

In as much as they are hard to clean, cleaning them from moss and other debris is easier than cleaning a screen filter.

Screen filters are cost-effective and user-friendly. They are efficient in the removal of solids, sticks and leaves from water.

They are easy to clean since cleaning the element does not require disassembly.

How Does Mesh And Micron Relate In Irrigation Screens?

Mesh can be used to describe the tightness of the screen weave.

It specifically refers to the screen hole sizes, that is, the number of holes per square inch.

Microns describes the particle sizes that the screen can allow to pass through them.

In as much as they are related, they are two dissimilar ways of filtration level measurement.

Should The Irrigation Screen Filter Be Installed Before Or After The Pressure Tank?

It is vital to get the understanding that both approaches have their own advantages.

In the event that the Irrigation Screen Filter is installed before the pressure tank, only clean water gets inside the tank.

This restricts debris from entering thus prolonging the lifespan of the pressure tank and the pressure switch.

This may also result in a drawback that is reduction of water pressure through the filter because of clogging by the filter media.

Installing an Irrigation Screen Filter after the pressure tank means all the debris would go into the tank before filtration leading to clogging.

However, arguments are abounding that the pressure tank acts just as a pipe and sediments don’t affect it too much.

In the event that sediments collect, the valve can be used to drain the dirt and water. This may not prove easy depending on the installation.

How Do Self-Cleaning Irrigation Screens Work?

A self-cleaning irrigation screen works in such a way that particles are strained by a stiff cylinder screen thus having the particulates trapped on the inside.

Differential pressure then occurs due to the build of the particulate layer across the inlet and outlet.

The filter is monitored by a controller.

The controller, upon sensing sufficient differential pressure, opens a flush valve that produces a speedy flow which passes through the internal cleaning device.

It then builds up the debris via vacuum on the screen and eventually expels it.

What Are The Pros And Cons Of Irrigation Screen?

Pros

• They offer a high quality filtration
• They use a considerable little amount of water when backwashing
• No special form of manifolding is required and can easily be mounted on the discharge line.
• They are easy to maintain

Cons

• The whole unit comprising irrigation screens may end up taking a lot of space

What Are The Screening Media Used In Irrigation Screens?

Some of the most common media screens include:

Mesh

Due to the manufacturing restrictions of perforated plate media, the mesh is utilized for fine screens measuring 1mm or less.

Due to the fragile nature of mesh media, stapling of solids occurs within the media.

This hinders the release of netted solids by the mechanism removing them.

Water jet cleaning at very high pressure is recommended to prevent the mesh from clogging.

Filter Cloth

This is a cheap and very appropriate technology used to sieve out tiny particulates and debris in irrigation water.

It has a filter accuracy of about 15-50 microns.

When a flow of water passes through it, particulates larger than the pores remain.

What Are The Design Considerations For Irrigation Screens?

• The location of the Irrigation Screen
• The climate and environment:

heat should be provided to the Irrigation screens in freezing environments and discharge chute covered in extremely windy areas.

• Sufficient safety factors when peak screening quantities are determined.
• Access in the event of Irrigation screen replacement
• Requirements for washing and compacting the filters
• The coatings and construction material required for the overall unit
• Availability of spare parts
• Access to water for maintenance and cleaning
• The buildings ventilation requirements and hazardous classifications
• The height of the equipment and its footprint
• Establishment for bypass manual Irrigation screen or redundant screen
• Provisions for screen removal during maintenance
• The discharge height that will accommodate the conveyed screenings for discharge.

What Are The Factors To Consider When Choosing The Right Filter For Screen Irrigation?

Some of the key considerations include the following:

Water Source

The source of water can be classified into dirty water and clean water.

Dirty Water

This includes water coming from sources like irrigation canals and water ponds.

The water most likely is laden with debris and therefore extreme caution should be taken not to allow it into the irrigation system without filtering.

Due to the nature of the dirty water, the filter screen will have a massive buildup of debris there frequent cleaning will be required.

In the event that valves have been installed in the irrigation system, a larger filter will have to be fitted before the valves and manifold.

Clean Water

This is any water originating from a well or municipal source. It still contains small amounts of a particulates in as much as it is clean.

In such a circumstance, a filter is only used as insurance but does not serve the sole purpose of primary filtration.

The filter should still be regularly checked and cleaned even with clean water just to make sure it does not clog.

Emitting Device

Filtering requirements vary with different irrigation products. Filtration of 80 mesh minimum is required for spray heads and sprinkler systems.

Due to their small orifices, drip irrigation emitters require a minimum of 120 mesh for efficient filtration.

This means that a combined system of drip irrigation and sprinklers will need a 120 mesh filtration.

Ease of Cleaning

Filters are designed in such a way that removing the filter screen does not need disassembly of the whole filter head to access the screen.

However, inline hose filter is an exception in as much as it efficiently works well with clean water and is very cost-effective.

Its only disadvantage is that the filter has to be disconnected from the head assembly if the screen has to be accessed for cleaning.

Clearance of Faucet

Residential users are normally connected to outdoor facets hence it is important to establish how much clearance is available between the ground and faucet.

The drip system has the faucet as its starting point.

An assembled drip system normally needs a clearance of 15 inches.

Anything less than this will require the use of a tee filter in the system since it will heavily reduce the extent of clearance required.

At FilSon Filters, we offer a range of irrigation screens, depending on your unique requirements and specifications.

Contact us today for all your irrigation screens needs.