Aventics Pneumatics

Compressed air preparation

Q: What is compressed air preparation?

Compressed air preparation involves the use of filters, regulators, and lubricators to ensure clean and efficient air supply in pneumatic systems.

Q: Why is air preparation important in pneumatics?

Air preparation removes contaminants, regulates pressure, and provides lubrication, which enhances the performance and longevity of pneumatic components.

Q: What are the components of air preparation systems?

Air preparation systems typically include filters for contamination removal, regulators for pressure control, and lubricators for reducing friction.

Q: How do filters work in air preparation?

Filters remove particles, moisture, and oil from compressed air to prevent damage to pneumatic components and ensure efficient operation.

Q: What role do regulators play in air systems?

Regulators maintain a consistent air pressure within the pneumatic system, which is crucial for the proper functioning of various components.

Q: Why are lubricators used in pneumatic systems?

Lubricators add a controlled amount of oil to the compressed air, reducing friction and wear on moving parts, thus extending the system's lifespan.

Q: Can air preparation improve energy efficiency?

Yes, proper air preparation reduces the energy needed for air compression and minimizes air leaks, leading to more efficient and cost-effective system performance.

Aventics compressed air preparation covers all components that deliver clean, dry and pressure-regulated air between the compressor and the point of use. The range includes modular maintenance units and individual components from the NL and AS series, AR1 compressed-air tanks for buffer storage, PG1 pressure gauges for pressure monitoring, and lubricants for oiler charging.

Maintenance units are supplied in 2- or 3-part form (filter, pressure regulator, lubricator) or as combined filter-pressure regulator units. The series differ in nominal size (G 1/8 to G 2), filter fineness (standard 5 µm, ultra-fine 0.01 µm, activated carbon) and maximum operating pressure.

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Buying guide

How to choose Compressed air preparation

What matters when choosing: properties, comparison and typical applications.

Building a compressed air preparation line

⚙ Pre-filter (FLP) - removes coarse particles and water droplets, protects downstream components

✦ Main filter (FLS, 5 µm) - separates particles and oil mist from the compressed air

↕ Pressure regulator (RGS) - sets and maintains working pressure at the required level

📦 Ultra-fine / activated-carbon filter (FLC / FLA) - residual oil content < 0.01 mg/m³ for oil-free applications

✓ Lubricator (LBS) - metered lubrication for cylinders and tools, standard mist lubricator MU1-LBS

⬡ Buffer tank (AR1) - pressure storage for peak demand equalisation, 0.1-9 litre capacity

Series comparison

Series	Port size	Max. pressure	Key feature
NL1	G 1/8 - G 1/4	up to 10 bar	Compact individual and combination units
NL2	G 1/8 - G 3/8	up to 10 bar	Wide filter spectrum FLS/FLC/FLP/FLA
NL4	G 1/8 - G 3/4	up to 10 bar	Filter-regulator (FRE) as combined unit
NL6	G 3/4 - G 1	up to 10 bar	Large nominal flow, 3/2-way valve SOV
NLC	G 3/8 - G 3/4	up to 10 bar	Universal FRL maintenance unit combined
AS3	G 1/8 - G 1/2	up to 16 bar	Charge unit SSU, isolator valve BAV
AS5	G 3/4 - G 1	up to 16 bar	High flow, charge valve SSV electric/pneumatic
MU1	G 1/8 - G 2	up to 30 bar	High pressure, condensate separator COS, oxygen version

Typical applications

Typical applications: Compressed air preparation for manufacturing and assembly automation, supply to handling systems, grippers and valve islands, food and pharmaceutical industry with oil-free air requirements (activated-carbon stage FLA), automotive and general mechanical engineering, and high-pressure applications up to 30 bar with the MU1 series.

✓ Genuine Aventics partsNL1, NL2, NL4, NL6, NLC, AS3, AS5, MU1, MH1

📦 Port sizes G 1/8 to G 2Pressure up to 30 bar (MU1), filter fineness to 0.01 µm

FAQ

Frequently asked questions about Compressed air preparation

What is compressed air preparation?

Compressed air preparation involves the use of filters, regulators, and lubricators to ensure clean and efficient air supply in pneumatic systems.

Why is air preparation important in pneumatics?

Air preparation removes contaminants, regulates pressure, and provides lubrication, which enhances the performance and longevity of pneumatic components.

What are the components of air preparation systems?

Air preparation systems typically include filters for contamination removal, regulators for pressure control, and lubricators for reducing friction.

How do filters work in air preparation?

Filters remove particles, moisture, and oil from compressed air to prevent damage to pneumatic components and ensure efficient operation.

What role do regulators play in air systems?

Regulators maintain a consistent air pressure within the pneumatic system, which is crucial for the proper functioning of various components.

Why are lubricators used in pneumatic systems?

Lubricators add a controlled amount of oil to the compressed air, reducing friction and wear on moving parts, thus extending the system's lifespan.

Can air preparation improve energy efficiency?

Yes, proper air preparation reduces the energy needed for air compression and minimizes air leaks, leading to more efficient and cost-effective system performance.