Sintered Filter FAQs

Q: How does Sintered Filter Works?

Surface Filtration The interior of the sintered filter features a porous structure that blocks larger impurities on its surface, allowing liquid and smaller impurities to pass through. Deep Filtration The pores within the porous filter are tortuous and interconnected, causing smaller particle impurities to be adsorbed onto the internal pore walls during the flow process.

Get clear answers about sintered filters—from how they trap particles and enable flow control to how to clean them and choose the right type for industrial use.

Sintered Filter

What is a Sintered Filter?

A sintered filter is made by compacting metal, ceramic, or plastic powder into a desired shape, then sintering it to form a rigid, porous structure. The interconnected pores allow fluid or gas to pass through while trapping solid particles.

These porous filters are available in disc, tube, or cone shapes and are used in filtration, flow control, silencers, diffusers, and breather vents across various industries.

What Factors Should Be Considered When Choosing a Sintered Metal Filter?

You need to consider the following factors:

Filtration ratings
Pore size
Chemical compatibility
Working temperature
Flow rate
Product quality
Maintenance and cleaning

How to Clean Sintered Filters?

Here are some common cleaning methods for sintered filters:

Ultrasonic Cleaning
Start by heating the filter in a nitrogen-protected furnace at 380°C for two hours. Then place it in an ultrasonic bath for about 30 minutes to remove fine contaminants.

Chemical Flushing
This method uses a chemical cleaning solution to dissolve and flush away impurities from the filter structure.

Pyrolytic Burn-off
For filters used in high-temperature environments, contaminants can be removed by exposing the filter to elevated temperatures that burn off residues.

How does Sintered Filter Works?

Surface Filtration
The interior of the sintered filter features a porous structure that blocks larger impurities on its surface, allowing liquid and smaller impurities to pass through.

Deep Filtration
The pores within the porous filter are tortuous and interconnected, causing smaller particle impurities to be adsorbed onto the internal pore walls during the flow process.

What is a Breather Vent?

A breather vent is composed of threads and filter media that helps equipment or pneumatic systems exhaust gas, maintain pressure balance, and protect against dust. It also reduces noise during gas exhaust.

These breathers are typically made of stainless steel, bronze, or brass, providing good heat and corrosion resistance for long-term use.