Air Filter Regulator 5 Models

What's The Air Filter Regulator?

An Air Filter Regulator is a compact unit that combines a compressed air pressure regulator and an air filter—often equipped with a pressure gauge for monitoring.

Regulator Mechanism

The pressure regulator controls the output pressure of compressed air.
It maintains a consistent and stable output pressure, as long as the inlet pressure is higher than the preset value. When fluctuations occur in the inlet pressure, the regulator automatically adjusts to maintain the desired outlet pressure.

Filter Mechanism

The air filter purifies the compressed air supplied by the compressor.
It performs the following functions:

  • Removes solid particles such as dust, rust, and dirt

  • Separates moisture and oil from the air stream

Filtration process:

  • Solid contaminants are trapped by the filter element, which may require periodic cleaning or replacement

  • Moisture and oil are collected in the filter bowl and discharged through a drain valve located at the bottom

This integrated system improves downstream air quality and protects pneumatic tools and equipment from damage and wear.

Air Filter Regulators

The Structure Of Air Filter Regulator

Static

Structure Of The Compressor Filter Regulator

Why The Air Filter Regulator Is Necessary?

Filter clean the particles from the compressed air.

For lots of factory and the air compressor is essential machine. As the the compressed air is common power for many automatic system. When air exits a compressor it is warm, dirty, and often wet, which can harm and shorten the life of downstream equipment, such as valves, cylinders, air hose etc. So, before that, it needs to be filtrated and get a suitable output!

Regulator insure the stable pressure output.

The air regulator mechanism, if seperated from the filter regulator combination, it could work as the independent air pressure regulator. It generally reduce pressure levels to a specified value though adjust the knob on the regulator. Be with ultimately lowers costs and provides an element of safety guarantee. 

Insure The Stable Pressure Supply

If a downstream unit’s output depends on the input air pressure, it’s important to provide a stable air supply. Air coming straight from a compressor can fluctuate depending on the compressor’s condition.

In applications like plastic extrusion, these pressure changes can affect product quality. If the supply pressure rises above the intended set point, the final product may be defective.

To prevent this, use a filter regulator to clean and control the air from the compressor. Filter regulators help keep the pressure stable, even if the compressor output changes.

AFR/BFR AIRTAC Standard Model Filter Regulator

Fluid: Compressed air

Operating Pressure Range: 0.05 to 1.0 MPa

Proof Pressure: 1.5 MPa

Ambient and Fluid Temperature: −5 to 60°C (No freezing)

Filtration Rating: Standard 20 or 40 µm

Bowl Material: Polycarbonate (standard); metal options available​​

Port Sizes: AFR2000: 1/8, 1/4​; BFR3000: 1/4, 3/8​; BFR4000: 1/4, 3/8, 1/2​; BFR5000: 3/4, 1″​​​

AW Series Filter Regulator Compatible SMC Model

Fluid: Compressed air

Operating Pressure Range: 0.05 to 1.0 MPa

Proof Pressure: 1.5 MPa

Ambient and Fluid Temperature: −5 to 60°C (No freezing)

Filtration Rating: Standard 5, 20, or 40 µm

Bowl Material: Polycarbonate (standard); metal options available​​

Port Sizes: AW2000: 1/8, 1/4​; AW3000: 1/4, 3/8​; AW4000: 1/4, 3/8, 1/2​; AW5000: 3/4, 1″​​​

F1 Series Air Filter Regulator Combination (OFR)

Fluid: Compressed air

Operating Pressure Range: 0.05 to 1.5 MPa

Proof Pressure: 1.8 MPa

Ambient and Fluid Temperature: −5 to 60°C (No freezing)

Filtration Rating: Standard 5 or 40 µm

Bowl Material: Polycarbonate (standard); metal options available​​

Port Sizes: F1-MINI: 1/8, 1/4​, 3/8; F1-MIDI: 1/4, 3/8​, 1/2, 3/4; F1-MAXI: 1/2″, 3/4″, 1″​​​

QFRH High Pressure Air Filter Regulator

Fluid: Compressed air

Operating Pressure Range: 0.05 to 3.0 MPa

Proof Pressure: 5.0 MPa

Ambient and Fluid Temperature: −20 to 80°C (No freezing)

Filtration Rating: Standard 20 or 40 µm

Bowl Material: Aluminium (standard); stainless steel options available​​

Port Sizes: 1/4″-1″​​​

SFR Stainless Steel Model

Fluid: Compressed air

Operating Pressure Range: 0.05 to 3.0 MPa

Proof Pressure: 5.0 MPa

Ambient and Fluid Temperature: −5 to 120°C (No freezing)

Filtration Rating: Standard 5 µm

Bowl Material: Stainless steel (standard); ​​

Port Sizes: 1/4″-1″​​​

How to select?

Key Considerations for Selecting a Filter Regulator Unit

Selecting the right filter regulator unit depends on several critical factors. Understanding the specific needs of your application will ensure optimal performance, reliability, and safety.

1. Required Flow Rate

The flow rate of your system or process determines the appropriate port size of the filter regulator. Undersized ports can restrict airflow, while oversized ports may lead to unnecessary cost or space usage.

2. Filtration Level and Air Dryness

Determine the level of filtration and dryness your system requires:

  • Standard filtration is 40 microns, ideal for general applications.

  • Fine filtration at 5 microns is available when cleaner air is necessary.

Best practice: Use a two-stage approach—filter to 40 microns first, followed by 5 microns.

  • A 40-micron filter removes approximately 95% of water content.

  • A second-stage 5-micron filter removes 95% of the remaining 5%, achieving water removal efficiency approaching 99%.

For critical applications, oil removal and vapor filters can be added downstream of particulate filtration.

3. Pressure Requirements

Understand both:

  • The supply pressure, and

  • The required operating pressure for downstream equipment.

The pressure regulator ensures proper delivery pressure. Note that a measurable pressure drop will occur across the filter regulator—this should be factored into your system design.

4. High-Pressure Applications

In standard environments, supply pressure typically does not exceed 10 bar. However, in specialized industrial or process systems, a high-pressure filter regulator (up to 30 bar) may be required.

5. Corrosive Environments

When operating in harsh or corrosive environments, use a stainless steel air filter regulator to ensure durability and corrosion resistance.

Types of filter regulators

The standard models have ports from 1/8 to 1″, auto or manual drain and pellucid polycarbonate or metal with level indicator bowls. 40 micron filter elements fit all standard options, as is an integrated gauge. Other options are available, for example 5 micron filter elements.

The Dg-Pnetic standard range has ports G1/8 to G1″ and auto or manual drain. A metal bowl and 40 micron filter element is fitted to all standard options.

At Dg-Pnetic

we have a wide range of air pressure regulators, ranging from general purpose units covering everyday industrial applications, to more specialised precision regulators.