20 bar air compressors
Twenty bar is double the usual workshop pressure, and in our range it comes from two-stage ABAC Tech ATH machines. They have direct drive without belts, a low speed of 1,500 rpm and a motor that may run without a break. From 1.5 to 15 kW, base-mounted or directly on an air tank. They are joined by the WALTER SLC 22/20 screw compressor with 22 kW and an inverter.
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How to choose
How much air at twenty bar
The ATH piston machines give 126 to 1,080 litres per minute and the WALTER SLC 22/20 screw compressor gives 1,700 l/min — always measured at full pressure. Because the ATH motor may run continuously, you size by the average consumption over a shift, not the peak. The biggest jump is between 7.5 and 11 kW — from 546 to 906 l/min.
Base-mounted or tank-mounted
Eight machines come without a tank, seven ATH on a base frame and the WALTER SLC in a cabinet — for sites that have their own tank certified for 20 bar. Four come ready-assembled on a horizontal 90 or 270 l air tank. Machines without a tank for every pressure are listed under air compressors without a tank.
Motor starting
From 4 kW upwards the ATH motor starts via star-delta, which lowers the inrush current at start-up — decisive on a weaker supply. Smaller ATH units start direct-on-line, and on the WALTER SLC the inverter runs the motor up smoothly.
Why two stages
Air cannot be compressed to twenty bar in a single step — the discharge temperature would exceed what the oil and valves can take. The ATH therefore compresses in two cylinders in series with an intercooler between them. The full design and a table of all machines are on the range page ABAC Tech ATH 20 bar.
Neighbouring pressures
One step down are 15 bar air compressors — besides the ATH, also the belt-driven B60 and B70 on a 500 l tank. Above twenty bar there are 30 bar air compressors. Compressors with normal workshop pressure are in our range of air compressors.
Frequently asked questions
- Which hoses and fittings for a 20 bar compressor?
- Every part of the system must have a working pressure of at least 20 bar and its own safety valve. Standard workshop hoses and couplings rated at 10 to 15 bar are not enough.
- Can I set a 20 bar compressor to a lower pressure?
- Yes, with the pressure switch or a regulator. But if you do not need the higher pressure, a single-stage 10 bar machine will give you more air for the same energy.
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Black Wind piston compressors
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Atmos reciprocating compressors
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Walter reciprocating compressors
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Piston compressors ABAC
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Piston compressors ABAC
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Expert Zero compressors
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ABAC reciprocating compressors
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Quiet compressors Super Silent OS
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INDUSTRIAL TECH compressors
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CLR reciprocating compressors
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Combustion compressors
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Screw compressors
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Pressure vessels
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Compressor accessories
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Product sorting
List of products
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 1/2" in 1000 mm length and straight end...
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. 1" threaded version in 2000 mm length and straight end caps.
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 1 1/4" in length 2500 mm and straight ends.
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 1 1/4" in length 1500 mm and straight ends.
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 1 1/2" in length 1500 mm and straight ends.
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 1 1/2" in length 2000 mm and straight...
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 1 1/4" in length 2000 mm and straight ends.
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 1 1/2" in length 2500 mm and straight ends.
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 1" in length 1500 mm with straight and...
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 1/2" in length 1000 mm with straight and...
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 1/2" in length 1500 mm with straight and...
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 1/2" in length 1500 mm and straight end...
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 3/4" in length 2500 mm and straight ends.
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. 1" threaded version in 1500 mm length and straight end caps.
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 3/4" in length 1500 mm with straight and...
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 3/4" in length 2000 mm with straight and...
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 1/2" in length 2500 mm and straight end...
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 1/2" in length 2000 mm and straight end...
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 3/4" in length 1500 mm and straight ends.
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 3/4" in length 2500 mm with straight and...
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 3/4" in length 2000 mm and straight end...
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 1/2" in length 2000 mm with straight and...
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 1" in length 2000 mm with straight and...
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 3/4" in length 1000 mm and straight ends.
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 1" in length 2500 mm and straight ends.
Eleven kilowatts on a base frame. Two thirds more air than the 7.5 kW machine and a different weight class — 185 kg and five decibels louder.
The strongest machine of the category: fifteen kilowatts and over a thousand litres of air per minute at twenty bar. On a base frame, with star-delta starting.
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 2" in length 1500 mm and straight ends.
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 2" in length 2000 mm and straight ends.
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 2" in length 2500 mm and straight ends.
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 1 1/2" in length 1500 mm with straight...
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 1 1/2" in length 2000 mm with straight...
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 1 1/2" in length 2500 mm with straight...
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 1 1/4" in length 1500 mm with straight...
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 1 1/4" in length 2000 mm with straight...
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 1 1/4" in length 2500 mm with straight...
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 1" in length 2500 mm with straight and...
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 1/2" in length 2500 mm with straight and...
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 2" in length 1500 mm with straight and...
Fused hoses with reinforced end caps for connecting the pressure vessel to the compressor and air line. Maximum 20 bar. Threaded version 2" in length 2000 mm with straight and...