Stainless Steel Sintered Filter Cartridge: The Ultimate FAQ Guide

Here are important facts you need to know before choosing stainless steel sintered filter cartridge.

Whether you want to learn about the design, material type, working principle or construction, you will find all information right here.

Keep reading to learn more.

What is Stainless Steel Sintered Filter Cartridge?

Stainless steel filter cartridge

Stainless steel filter cartridge

This is a filter element that has stainless steel as the core element.

It can remove physical impurities through physical means by preventing them from passing through the pores.

However, the fluid is allowed to pass through.

The filter cartridge has a housing that gives it physical protection from damage.

Besides the physical dirt, it also possible to remove chemical impurity using the filter element.

From the market, you can get filter elements with different micron ratings. Therefore, you would have a different application of the filter elements.

Due to the very low micron rating, you would be able to filter very small impurities like; yeast and bacteria sediments.

When should you Replace Stainless Steel Sintered Filter Cartridge?

The filter element can give you a longer service life.

You may need to replace it when the pressure difference is too high, the efficiency level is low, or when damaged.

Having the right protective clothes and tools needed, you should ensure the whole system is shut down and the pressure is too low before the onset of replacing.

How does Stainless Steel Sintered Filter Cartridge compare to Sintered Mesh Filter?

Sintered mesh filter

Sintered mesh filter

Both filter elements have a lot of similarities as below.

  • They are both made using the sintering process
  • Also, they both have high resistance to temperature, pressure, corrosion, and oxidation.
  • Besides, they are made from stainless steel hence they derive similar benefits from using stainless steel
  • They need housing for protection and mechanical strength
  • These filters are made of single or multilayers with precise pores for effective filtration.

How do you Manufacture Stainless Steel Sintered Filter Cartridge?

The filter element is made of stainless steel.

Stainless steel material you are likely to use include; SS 304, SS 316, & SS 316 L.

Several wire meshes are sintered together in a vacuum under mechanical pressure through cold isostatic pressing.

This increases its porosity and stability.

The wire meshes are rolled into a cylinder.

Also, the cylindrical filter can either be pleated or plain. This further increases its filtration area.

The two ends are seamed together through welding.

Besides, the shaping into cylindrical form is done to increase the roundness and flatness of the filter element.

Cylindrical shaping also increases its mechanical strength. Additionally, a courser material is added to prevent it from being destroyed.

You could test the integrity of the filter element through a bubble point test.

Through the test, you can verify that the pore sizes are uniform and of the required size, no openings are found at the joint or seems, and no media migration occurs.

What are the Features of Stainless Steel Sintered Filter Cartridge?

The features of the filter element are the key determinants of its working efficiency level. Features are also helpful in improving the quality of the device.

The features of the element are highly influenced by the design, material used, dimensions of the stainless steel, micron rating, seal configuration, working conditions, method of construction, filtration area, and type of the end.

Other features are as listed below;

  • It is of quality enabling you to reuse the filter element.
  • It has consistent pore sizes enabling you to have the consistent filter rating desired.
  • Stainless steel has chemical resistance. Therefore, you could use it in filtering corrosive fluids.
  • The filter element is easy to clean. This will allow you to use the filter element for a long time saving you on cost.
  • Besides, the filter element has a high flow rate of 25 or 30 rpm per 10″ length
  • It can withstand high temperatures of up to 400° F. therefore, you could utilize it in a heating process.
  • Besides, it can withstand high-pressure operations (50 ΔP). Therefore you could utilize it in pumps.
  • The courser element added and then shaping it into cylindrical form increases its mechanical strength in comparison to sheet filter counterparts.

It has a high dirt holding capacity. This capacity is further increased by the housing

What are the Benefits of Stainless Steel Sintered Filter Cartridge?

It has high mechanical strength enabling it to withstand very high pressure without destruction

Besides, this filter has uniform pore sizes increasing its filtration efficiency

Moreover, it can withstand very high temperatures in comparison to some filter elements

Also, it is easy to clean increasing its service life

You can find it in different sizes.

Therefore, you may find that which suits your application.

The pore structure is firm which prevent the backflow of the impurities into the filtered fluid therefore, you are guaranteed of efficient filtration of the process fluid.

Having been made from stainless steel, it resists corrosion. Therefore, you could use it in corrosive fluids

It allows back flushing of the fluid so that you do not leave any fluid on the filter

Are there Limitations of Stainless Steel Sintered Filter Cartridge?

The filter element is manufactured through an expensive process making it costly.

Also, the clogging limits its filtration efficiency

Where can you use Stainless Steel Sintered Filter Cartridge?

You could use the Stainless Steel Sintered Filter Cartridge infiltration of liquids, gas, or solids. The most specific industrial use of the Stainless Steel Sintered Filter Cartridge include;

Sintered filter cartridge

Sintered filter cartridge

  • Sound attenuation like in aerospace, metallurgy, petroleum, and food industries
  • You could also use it in sound attenuation in disabling a bomb
  • Gas distribution in a fluidized bed
  • Machinery industry, you could use it in fine filtration of hydraulic oil and lubrication oil.
  • Chemical industry, you could use it in polymer filtration.
  • Pharmaceutical industry, you could use it during washing and drying.
  • Food and beverage industry, you could use it in treating water and filtering gas.

What are the Sizes of Stainless Steel Sintered Filter Cartridge?

They come in different sizes.

You can find one as small as the head of a pin or as large as a 55-gallon drum

What should you consider when designing Stainless Steel Sintered Filter Cartridge?

There are several factors you might need to consider when designing the filter element. Otherwise, your filter element may not be efficient infiltration.

Some of the design considerations include;

·         The Filtration Rate

It is dependent on pore sizes. The bigger the pore sizes the lower the filtration rate you will achieve and vice versa.

The specific pore sizes prevent the passing of particles beyond the specific pore sizes.

You could use an absolute or nominal micron rating.

The absolute micron rating is more specific with a filtration rate of 99%.

Nominal micron rating is less efficient at 60%.

·         Pressure Drop

Pressure drop is the difference in pressure between the inlet and outlet of the filter element. There is usually a loss of pressure between the two sides of the filter element.

You should have a specification on the maximum pressure drop of the filter element that best suits your application.

·         Temperature Range

Different applications will have different temperature ranges. It may be to the extreme on both ends.

Therefore, your filter element should be applied in the right temperature applications otherwise it may fail.

·         Mechanical Strength

The application may expose the filter element to forces that may damage it.

Therefore, the filter element of your choice should be strong enough to resist damage.

·         Filtration Area

The design should allow for enough room for filtration.

Smaller filtration are would make the filter element less efficient.

Hence the reason why the filter area is either cylindrical or plain.

Which Grades of Stainless Steel do you use for Sintered Filter?

The main alloys of steel that are likely to make your filter element include; 304, 304L, 316, 316L, 904L

Each of the alloy has differential characteristics as discussed below;

·         Stainless steel 304SS

It has increased resistant to oxidation at high temperatures.

Also, it has high resistance to corrosion

It is malleable into different shapes and sizes through welding, cutting and shaping

Besies, it is also non-magnetic in annealed conditions.

Therefore, you could utilize this alloy in many applications.

·         Stainless Steel 304L

It has lesser carbon concentration in comparison to 304SS.

This makes it easier to weld easily. It also has got chromium ≥ 18% and nickel ≥8%.

It is non-magnetic with high resistance to corrosion and oxidation.

·         Stainless Steel 316 SS

It has increased resistance to corrosion on and pitting. This is made possible due to presence of molybdenum.

Though it has similar traits as stainless steel 304, you may not opt for it in some conditions.

However, you would probably opt for it in industrial chemical manufacture of corrosive chemicals.

It is the most second utilized alloy in comparison to stainless steel 304.

·         Stainless Steel 316L

This alloy has got reduced concentration level of carbon in comparison to stainless steel 316. However, you would still benefit from a similar trait as with stainless steel.

It also has higher weldability in comparison to stainless steel 316 SS.

What are the Benefits of Sintering Technique in Stainless Steel Filter Cartridge Manufacturing?

You benefit from sintering by;

  • Ability to form different shapes of the filter element
  • You can get a precise dimension of the filter element
  • The process is repeatable and reliable in mass production
  • The interconnected porosity can be filled with oil to obtain a self-lubricating filter element
  • It is possible to obtain unique and isotropic material
  • The production process of the material support the green technology since there is no wastage and energy efficiency
  • The surface finish is excellent; smooth and flat
  • Internal micro porosity result in 5%to 25% weight reduction

Stainless steel filter cartridge

Stainless steel filter cartridge

How does Stainless Steel Sintered Filter Cartridge Work?

The filter element works by creation of a physical barrier between the process fluid and the impurity.

Besides, the process fluid passes from the outside to the inside.

The outer layer is course trapping the larger impurities whereas the inner layer are finer trapping micron size impurities.

Also, the process fluid passes the filter element through high pressure. Through adhesion, the impurities stick together to form a large mass.

How do you Choose Stainless Steel Sintered Filter Cartridge Housing?

Cartridge filter housing

Cartridge filter housing

You should choose the housing for the filter element according to;

  • The application parameters
  • Filter element precision
  • The design of the filter element

Can you Clean Stainless Steel Sintered Filter Cartridge?

Yes, you can use either of the procedures below;

  • Blowback is done for gas filters
  • Backflush for liquid applications
  • Ultrasonic cleaning to remove inert dirt
  • You could also remove solvents to dissolve dirt e.g. water, acid,

The cleaning steps include;

You should first make sure that the differential pressure is too low to cause an accident.

Put the filter element in a nitrogen furnace and heat it to 380 degrees for 2 hours

After cooling, place the element in a strong liquid and heat it to 80 degrees for 1hr.

In case of corrosion, use a cleaning agent.

You should rinse with much water until all the residues have been removed.

Blow-dry the element to remove all the water for 20 seconds or use a an oven at 50 degrees

You should use a magnifying glass to check how clean the filter element is. The magnifying glass should be 30 times stronger.

If clean, reinstall the filter element.

Are Stainless Steel Sintered Filter Cartridge Durable?

Yes, they are very durable.

Stainless steel filter cartridge can last up to 2 years if utilized in the right condition.

Can you use Stainless Steel Sintered Filter Cartridge in Salty Water?

Yes, because it is corrosion-resistant.

What are the available Micron Rating for Stainless Steel Sintered Filter Cartridge?

Some of the micron rating you could choose from include;

  • 5micron rating -Most ideal in fine filtrations applications.
  • 10 micron rating – This is ideal in filtration requiring medium filtrations.
  • 50 micron rating – This rating is intended for pre-filtration. It is therefore used in trapping large particles or sediments before they enter the filtration element

What Determines the Design Stainless Steel Sintered Filter Cartridge?

Your filter design will be dependent on applications that would otherwise destroy polypropylene.

Such applications include;

  • High pressure
  • High temperature
  • Chemicals that would destroy polypropylene

How do you Install Stainless Steel Sintered Filter Cartridge?

You should ensure that the filter element is clean. Having done that, installation should be easy as below.

  • Place the filter element into the housing and fasten
  • Connect the right inlet and outlet pipes and allow water in
  • Close the bleeder valve
  • Turn on the pump
  • Open the bleeder valve and allow the excess water to pour out then close it

What is the Pressure Rating of Stainless Steel Sintered Filter Cartridge?

The pressure rating is usually specific depending on their application and the type of material used in its making.

However, the manufacturer will always indicate it to you.

How is the Sealing Configuration of Stainless Steel Sintered Filter Cartridge?

The sealing configuration is the key determinant of how then sealing will be done.

Therefore, before you decide on how to seal, you need to be aware of the sealing configurations.

You cannot afford to compromise on the seal since it will have a great impact on the integrity of the seal.

Since the sealing process involves a heat process, you should leave enough allowance of the material that will be melted together to form a seal.

Therefore, you need to specify the dimensions of the Stainless Steel Sintered Filter Cartridge having put the seal into consideration.

That is during the making of the filter element.

Otherwise, you risk having a leaking filter element.

What is the Effective Filtration Area of Stainless Steel Sintered Filter Cartridge?

The filtration area is the surface area around the filter element where filtration takes place.

Remember, the bigger the filtration area the more the surface area for the filtration of the process fluid.

Also, the more the filtration area the higher the filtration efficiency.

A small filtration area would reduce the efficiency of your filter element.

Among the design chosen for the filter cartridge, a pleated design is the most ideal.

It creates more filtration area giving you an increased efficiency infiltration.

The diameter of the filter element also has an impact on the efficiency of the filter element.

A bigger diameter provides a bigger surface area for filtration and increased efficiency of the filter element.

Therefore, if you have an opportunity to specify the type of filter element you want from your manufacturer, you should be sure to have a high surface area.

The flow rate of the process fluid at a given pressure is also increased by having a high filtration area.

Therefore, if you want a more reliable filter element it should be of high filtration area

Which Types of End Configurations can you find in Stainless Steel Sintered Filter Cartridge?

End configuration of stainless steel sintered filter cartridge

End configuration of stainless steel sintered filter cartridge

The end type is a representation of the type and the number of openings found in a filter element.

Most of the filter element you will find, has a double opening.

Being more specific, the type of openings you are likely to find are;

  1. Double open end with grommet type of seal
  2. Single open end with a female NPT connection
  3. Single open end with the male NPT connection
  4. Single open end with grommet type seal
  5. Single open end with the 222-O -ring

The end type also varies on size.

Therefore, as you choose the end type, it should be compatible with your application.

Which type of Stainless Steel Sintered Filter Cartridge do you have?

In the manufacturing arena, there are different types of filter elements.

You should therefore be able to choose a filter element that best suits your application.

Some of the filter elements that you can choose from include;

  1. Stainless steel mesh filter cartridge
  2. Stainless steel pleated filter cartridge
  3. Stainless steel wedge wire filters

Let’s explore these filters:

1)      Stainless Steel Mesh Filter Cartridge

This filter element is composed of a mesh wire filter.

Also, the mesh wire filter should be of high quality.

Besides, the wire mesh is formed through high temperature and pressure.

The formed wire mesh is then taken into drawing to provision.

Some of the features characterized by the filter element include;

  1. The wire mesh is made with precision making it uniform.
  2. It has a high filtration rate giving you increased accuracy to your precision
  3. Also, it has a very high resistance to high temperatures. Therefore, you can utilize them at high temperatures.
  4. It has a high resistance to pressure making it ideal to use in conditions with high pressure.
  5. Moreover, it has got resistance to corrosion making it ideal to use in applications utilizing chemicals and acids without getting damaged.

You will find it is highly utilized by the oil industries, chemical fiber, and electroplating industries.

The oil industry will mostly use it in removing mud, the chemical fiber industry will use it as a strainer whereas the electroplating industry will use it in acid pickling.

The filter element is made of different materials other than stainless steel which include; brass wire and nickel.

Its wire has got two diameters which can either be weft or warp.

This type of filter is weaved using different styles.

Some of the weaving you may find include; twill weave, double wire dutch weave, dutch weave, and plain weave.

2)      Stainless Steel Pleated Filter Cartridge

Pleated filter cartridge has got stainless steel fiber as the main material.

However, you may also find wire mesh being used.

Stainless steel 304 and 316 are the main materials used.

Some of the benefits you may derive from using this filter element include;

  • The pleating design increases the filtration surface area increasing the filtration rate
  • The filter elements increase its porosity
  • Besides its high filtration area, it also has got high dirt holding capacity
  • You will find it easy to clean through using ultra cleaning or chemical cleaning
  • It has got a wide micron range of 3 to 200 micron
  • It has a low-pressure drop
  • You may have the flexibility of using it in different applications which include; hot gas, high molecular polymers, water treatment plants, and hydraulic oil

3)      Stainless Steel Wedge Wire Filters

The filter wires are wedge-shaped making them ideal for your use in challenging applications.

Its continuous aperture provides a large surface area guaranteeing you of low-pressure drop or tendencies to clog.

The precise slot makes wedge filter ideal for you to use in starch extraction

Besides, the increased number of its welds and winding wires makes it strong and long-lasting. Therefore, it doesn’t only save you on maintenance cost and replacement but also it is useful in waste management.

These filter element has increased capacity for effective fluid/ solid separation. You could also utilize it in the straining of fluids.

Other applications include; pulp and pare, plastic extraction, adhesive filtration, petrochemical, and chemical extraction.

Other benefits include;

  • Mechanical strength
  • Minimized blinding and plugging
  • Resistant to pressure
  • Corrosion-resistant
  • High temperature resistant
  • Long service life
  • Low-pressure drop
  • High flow rate
  • Useable in sterile conditions

How does Stainless Steel Sintered Filter Cartridge compare to Sintered Stainless Steel Plate?

They both have the same processing method by sintering several layers of wire mesh. Therefore, they have similar features. However, the plate is made of more layers of the wire meshes (2 to 10)

What are the Features of Sintered Porous Stainless Steel Filters?

Some of the features include:

Sintered porous stainless steel filter

Sintered porous stainless steel filter

  • Stainless steel 316 is used but other alloys are also used Monel and Hastalloy
  • It has insertion capability
  • It is possible to customize their porosity level

How does Sintered Stainless Steel Filter Disc compare to Stainless Steel Sintered Filter Cartridge?

Both filter elements are made through a sintering process with single or multiple layers.

The main difference is on both is on the design one as a disc and the other as a cartridge.

However, you will experience similar benefits on mechanical strength, low-pressure drop, inherent stainless steel qualities, and resistance to high pressure and temperature.

Whether to go for stainless steel filter disc or filter cartridge will depend on your application requirements.

Sintered stainless steel filter disc

Sintered stainless steel filter disc

Sintered stainless steel filter cartridge

Sintered stainless steel filter cartridge

Why is Stainless Steel Sintered Filter Cartridge better than Fabric and Synthetic Media?

The sintered filter element is superior by;

  • The sintering process makes it rigid to destruction unlike fabric and synthetic media which easily get destroyed.
  • Sintering leaves it with uniform pores sizes for specific micron rating unlike the non-sintered elements
  • Sintered element is more permeable
  • Sintering enables multi-layering unlike fabric and synthetic media. Hence stronger
  • Sintering enables the element to be malleable into different design unlike fabric and synthetic media

Depending on your specific needs are requirements, FilSon Filters offers a range of stainless steel sintered filter cartridges.

Contact us now for all your stainless steel sintered filter cartridge.

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