Filson: Preeminent Wedge Wire Filter Supplier

Filson wedge wire filter, also called wedge wire strainer, wedge screen filter, wedge wire filter strainer, is composed of wedge wires and support bars, always processed by welding or stamping. It is durable and no deforming for longer time using, with our mature wedge wire filter processing technology.

The profile wires of Filson wedge screen filter usually wedge wire or triangle wire, and support bars could be triangle wire, round wire, flat wire and wedge wire. Besides, it has an inwardly expanding v-shaped groove to minimize the solid particles clogging.

Filson wedge wire strainer can work well under 815℃ condition and withstand differential pressure up to 300 psi. Besides, standard wedge wire filter slot size manufactured by Filson is 0.05-1 mm with the length up to 6000mm, or you can customize your special dimension.

Filson wedge wire filter strainer is capable of self-supporting itself with durable feature and stronger mechanical strength. It would use longer time than other materials, while provide lower maintenance and replacement costs.

In addition, Filson wedge screen filter has such other characteristics as low pressure drop, superior abrasion&corrosion resistance and excellent filtration efficiency of 90%. With uniform gap size and construction strength, our wedge wire strainers contribute to improve backwash and regeneration ability.

Filson wedge wire filter can be installed easily in filtration devices since its threaded or flange top. Its bottom may be flat or taper for sealing to prevent particles from passing through. Moreover, filtration accuracy of wedge wire strainer can down to 20 microns.

Compared with woven wire mesh filter, Fison wedge screen filter always proves to be more easily cleaned with a smoother surface structure. And there is less risk of damaging the material when you cleaning wedge wire filter than woven wire filter.

Actually there is no MOQ request for our wedge wire filters inquiry, even just 1 PCs is permitted. Plus, if you need a free sample to check quality or test whether it suits your needs, do not hesitate to contact Filson sales directly.

If you have any other questions about wedge wire filter, please reach out to us with your doubts! Contact +86 157 3695 8886 or send to sales@filsonfilters.com!

All Filson employees will be happy to help you!

Filson Wedge Wire Filter Specifications:

• Materials: SS304, SS316
• OD: 19mm-2000mm
• ID: 13mm-1981mm
• Length: up to 6000mm
• Slot size: 05mm, 0.1mm, 0.25mm, 0.5mm, 1.0mm
• Differential pressure: maximum 300 psi
• Interface form: thread fitting, flange, resistance welded closed plate metal ring …
• Flow rate: up to 40000 L/hr based on pure water
• Flow direction: out-to-in/in-to-out
• Temperature: up to 1500°F (815°C)

Note: Temperature is dependent on o-ring/gasket material and wedge wire raw material

Filson Wedge Wire Filter Features:

• High temperature&pressure resistance
• Large open areas
• High filtration efficiency
• Difficult to plug
• Wide ranges of sizes and end types
• Uniform gap size
• Longer service life
• Easy to clean with low maintenance costs
• Support to backwash

Filson Wedge Wire Filter Applications:

• Architectural and decoration
• Chemical industry
• Food&Beverage industry
• Mining industry
• Oil&Gas filtration
• Pulp&Paper
• Wastewater treatment
• Metallurgy and coal industry

Wedge Wire Filters: The Ultimate Guide

A wedge wire filter is a perfect filter for precise filtration of your fluid.

How?

The structure of a wedge wire filter is in such a way that it allows for more exceptional filtration of your fluid which removes the tiniest of contaminants.

However, the secret lies in identifying a suitable wedge wire filter for your application.

That is what this guide offer.

We explain every aspect of a wedge wire filter to enable you to make an informed decision.

By the end of this guide, you will be an expert in wedge wire filters

Let’s have a look.

What is Wedge Wire Filters?

A wedge wire filter refers to a welded steel structure in the filtration, separation, and retention of a particular fluid.

Wedge wire filter – Photo courtesy: Paul Parker

The structure of this filter consists of resistant surface profiles that are usually V-shaped wielded on different support profiles.

Normally, the distance between a surface profile and another forms the slot which acts as the filtration zone.

The V-shaped surface profile usually for conical slots for filtration.

It is therefore vital to control this distance very accurately.

Now that we know what a wedge wire filter is let’s learn more about a wedge wire filter.

Advantages and Disadvantages of Wedge Wire Filters

Wondering why you should use a wedge wire filter in your application?

Here is a look at the advantages that you will get when using a wedge wire filter.

Wedge wire filter

· Non- clogging

You don’t have to worry about the clogging effect that most filters have.

Fabrication of wedge wire filters using helical wrapping that is parallel offers continuous V-shaped wire support.

This forms an uninterrupted slot which allows for a two-point contact of granules in the filter thereby minimizing the clogging effect.

Non- clogging offers maximum effective flow and efficient operations.

You also reduce cleaning downtime and related cost as a result of clogging.

· High precision

Wedge wire filters come in different slot sizes which enables you to select a suitable one for your application.

The filters can have slot openings of between 0.025mm to 12.5mm depending on the size of the particles.

The advantage of high precision is that you can filter the fluid as per your requirements.

· Strong construction

You don’t have to doubt the strength of a wedge wire filter.

The fabrication of these filters is that each junction of the rod and undergoes welding.

Welding offers extra strength to the filter.

This strength is vital in reducing the replacement cost of the filter thereby offering more extended service.

Your application also gains higher resistance of force as a result of different temperature cycling and differential pressure of fluids.

· Surface filtration

Unlike other hydraulic filters, V-shaped structure of a wedge wire filter enables the filtration of your fluid to take place on the surface of the filter.

The advantage is that it allows for easy cleaning.

Cleaning can either be by scrapping or by backwash which ensures that the wedge wire filter is always clean for use.

· Wedge wire filters are economical

If you compare this filter to other filters available in the market, you won’t fail to determine that it is relatively cheaper.

This cheapness not only does it apply to the cost of buying but also the fact that it has a simple structure.

· Design flexibility

There are various designs available when it comes to wedge wire filters due to the manufacturing variations.

You are thus able to manufacture multiple shapes such as conical, cylindrical or flat wedge wire filters.

Main Sections of Wedge Wire Filter

When operating a wedge wire filter, you need to know exactly what you are using.

That includes understanding the different sections of a wedge wire filter.

Wedge wire filter sections

This chapter takes a look at the main sections of a wedge wire filter.

i. Wedge Wire Filter Surface Profile

The surface profile of a wedge wire filter comprises of a wire also known as V-shaped wire.

Remember, there are four types of surface profile available for a wedge wire filter, that is, flat wire, triangle wire, round wire, and trapezoid wire.

The primary material of surface profile in most wedge wire filters is steel due to its characteristics when it comes to filtration of fluids.

Depending on the directional flow of your fluid, the surface profile can either be horizontal or vertical.

The width size available for the surface profile ranges from 0.8mm to 3.4mm while the height varies from 1.2mm to 7.5mm.

ii. Wedge Wire Filter Support Profile

Support profile usually has a flat triangular, round or trapezoid bar.

The support profile offers a smooth filtering surface on the inner part of the filter.

Just like the surface profile, the support profile can either be horizontal or vertical depending on the directional flow of your fluid.

If you want to increase the pressure of the wedge wire filter, you have to use a large support profile.

Heavy support profile affects the open area of the filter element.

The size of support profiles ranges depending on the use.

For instance, the width ranges from 2mm to 5mm while the height varies from 2.28mm to 11mm.

iii. Slot tubes

The slot tubes refer to the welded structures with the tube axial direction offering the support profile it requires.

Slot tubes have narrow slot openings which are very accurate since they are manufactured using a machine.

These openings are also perfectly round.

The availability of end pieces allows for reinforcements if need be.

In some wedge wire filters, you can have variable slot openings for special purposes.

The ability to combine with different components of the wedge wire filter implies there is no standard slot tube size in the market.

iv. Flow

The flow of the wedge wire filter is the direction in which the fluid flows during the filtration process.

A wedge wire filter basically has two flows, that is, flow out to in and flow in to out.

The flow is a critical element of the filtration of your fluid.

As we are going to see later in this guide, certain factors determine the directional flow of the wedge wire filter.

Flow Direction in Wedge Wire Filters

The position of the surface profile in regards to the support profile dictates the flow direction of a wedge wire filter.

Flow characteristics

There are two main flow directions when it comes to wedge wire filters.

That is, flow out to in and Flow in to out.

· Flow out to in

Flow out to in also known as filtration out to in (FOTI) occurs when the support profile is vertical to the surface profile of the wedge wire filter.

The advantage of this directional flow is its ability to filter high suspended contaminants.

There are various ways through which filtration occurs under this type of flow.

For instance, there is the dead-end mode where the fluid flows through the wedges leaving contaminants on the surface profile.

Dead-end mode requires frequent cleaning of the surface profile to remove the contaminants and ensure maximum filtration.

· Flow in to out

Flow in to out also known as filtration in to out (FITO) happens when the support profile is horizontal to the surface profile of the wedge wire filter.

Flow in to out is ideal if you want to maintain the pressure of the fluid during the filtration.

However, there will be frequent cake formation as a result of the deposit of contaminants at the sides of the wedge wire filter.

This is due to the small inner diameter which does not generate enough pressure to force the contaminants.

Wedge Wire Filters Construction

Construction of wedge wire filters is quite easy. All that you need to understand are the specifications that you want for your wedge wire filter.

Basically, construction of wedge wire filters entails wrapping a profile wire cylindrically around longitudinal support rod.

After that, you weld all the wires and rods at every point of contact.

There are many combinations of support rods and profile wires for you to select depending on your application needs.

Wedge wire filter construction

However, four parameters are crucial when it comes to construction of a wedge wire filter.

You, therefore, have to pay attention to these parameters if you want to construct your wedge wire filter.

Let’s have a look at these parameters in detail to be able to understand.

· Standards external circumferential

The standard outer circumferential is occurs when the direction flow of the fluid is in the outside to inside.

Remember, the vertical rod support comes crucial in such a construction.

· Internal circumferential reroll

In internal circumferential reroll, the flow of the fluid is from the inside to the outside.

For this to happen, it utilizes the outside rod support of the wedge wire filter which is horizontal.

· External reroll

The external reroll utilizes the vertical rod to allow for the flow of the fluid which in this case flows from the inside to the outside.

· Internal axial rerolls

Most internal rerolls usually cylindrical with an overall length of 400mm and a profile wire width of 3.5 mm. X-Height 5.3 mm. The slot size usually is 0.5mm.

The internal axial reroll utilizes the horizontal rod for the flow of fluid which generally flows in the outside inside direction.

Construction of this part entails welding the profile wire with a support rod that has a diameter of at least 6mm.

The support pitch from center to center should have a pitch of at least 10mm.

They have square cut ends that forms the slots.

What to Look for when Buying Wedge Wire Filter

If you want the best for your filtration, you need to select the best wedge wire filter.

For you to do that, you need to pay attention to specific details.

Wedge wire filter

The big question is what these specifications that you have to adhere to are?

To answer this, here are the specifications that you need to check when you are buying a wedge wire filter.

· Particle characteristics

Understanding the nature and size of the particles that you want to filter is essential to selecting a wedge wire filter.

You need to know that there are two types of wedge wore filters, that is a tapered and circular screen.

As such you need to understand the characteristics of the contaminants to be able to select the right wedge wire filter.

· Maximum operating flow

The flow rate will determine the size of the filter that you are going to use.

Also, the wedge wire filter you are using needs to accommodate the flow of the fluid.

For instance, if the flow is high, you need to have a large wedge wire filter that can comfortably filter the fluid without affecting the flow.

Most wedge wire filters have a label indicating the maximum flow that they can handle.

Check for the corresponding flow indication to select the correct wedge wire filter.

· Maximum and minimum operating pressure

Each filter has a maximum operating pressure that it can handle.

You, therefore, need to select a wedge wire filter that corresponds with the operating pressure of your application.

The essence of this is to avoid rapture of the filter during operation which can lead to poor filtration of the fluid.

Understanding the minimum operating pressure is essential when you are dealing with automatic self-cleaning wedge wire filter.

When engaging in the flushing mechanism, you need to maintain the minimum operating pressure.

· Pressure Drop

Pressure drop is the decrease in pressure of the fluid across the filter.

As pressure forces the fluid through the filter element where filtration occurs, change in direction happens severally.

As a result, there will be resistance to the flow of the fluid which results in pressure drop once the fluid flows through the filter.

There are several factors such as contaminants, viscosity and flow rate that cause the pressure drop.

Pressure drop is an essential factor in that when the filter bag starts to fill up, the pressure drop increases.

This results in a decrease in the filtered contaminants.

When the pressure to overcome is too big, it compromises the desired flow via the filter.

As such, you need to remove the contaminants to reduce the pressure drop frequently.

Hence, when you are selecting a wedge wire filter, you need to factor the pressure drop as it will influence the cleaning frequency.

· Operating cost

Cost is undoubtedly an important factor when you are considering a wedge wire filter.

You need to maintain your operating cost low when you are using this filter.

One way of maintaining low operating cost is by ensuring that you select quality wedge wire filters.

Such filters will guarantee you of durable services with little operating cost.

Also, you can select a self-cleaning wedge wire filter which reduces the time spent cleaning the filter.

By doing so, you can have the maximum operation of your application.

Lastly, you can select a wedge wire filter that has a large contaminant holding capacity.

· Environmental exposure risk

Lastly, you need to consider the environment that your wedge wire filter will operate in.

This is in terms of temperature, chemical, and physical environment.

Environmental exposure risk allows you to select the best material for your wedge wire filter.

Filson Filters Wedge Wire Filter

FilSon Filters is the leading manufacturer of quality wedge wire filters.

Our wedge wire filters have a wide range of applications such as in the food industry, the fertilizer industry, and seawater treatment plants.

FilSon Filters

We use the latest technology in manufacturing our wedge wire filter.

What’s more, is that our materials are longer lasting thus offering you quality service.

With us, you don’t have to worry about your filters since we customize our wedge wire filters to meet your specifications.

If you are looking for a reliable manufacturer for your wedge wire filter, then you are in the right place.

Contact us today and let us manufacture your wedge wire filters for you at a relatively affordable price.

Conclusion

As it turns out, wedge wire filters play a crucial role in the filtration of fluids.

The advantages of these filters are enormous if you compare with the other filters.

However, you need to consider several factors before selecting a suitable wedge wire filter for your application.

Failure to do this may result in poor fluid filtration.

You can make your work easier by purchasing wedge wire filters from a reputable manufacturer.

Contact Filson for quality wedge wire filters.

We guarantee you of quality and durable wedge wire filters for your application.