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SIP EXT90304 NARDI Extreme 4 Compressor, Tank Capacity - 90 Litre, Max. Air Pressure - 10 Bar
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Technical Specification
PRODUCT NUMBER EXT50204
Capacity (L) 50
ITEM NO EXT50204
Max Pressure (psi) 145
Maximum Pressure (bar) 10
Noise Level 73dB(A)

Q 1. What is the EXT90304 NARDI Extreme 4 3.00hp compressor?

A. It is a 3.00hp, 90 litre direct-drive four-cylinder compressor for higher-flow 10bar applications.

Q 2. How much airflow does the EXT90304 model deliver?

A. It offers 21.20CFM piston displacement and 15.00CFM free air, about 600 and 425 litres per minute respectively.

Q 3. What maximum pressure can this unit achieve?

A. The compressor is rated to 145psi, equivalent to 10bar maximum working pressure.

Q 4. What motor and supply are used on this Extreme 4 compressor?

A. It uses a 2.20kW (3.00hp) four-pole brushless induction motor at 1400rpm powered by a 400v three-phase supply.

Q 5. Why is the pump considered oil-free and long-life?

A. Four cylinders with technopolymer piston rings and stainless fan valves provide oil-free compression and high durability with reduced maintenance.

Q 6. How do concentric big end bearings benefit pump longevity?

A. They reduce vibration and mechanical stress, extending pump life especially under high flow, continuous-duty operation.

Q 7. What is the purpose of crankcase air intake particle diffusion?

A. It lowers contamination entering the crankcase, protecting the valve plate and maintaining consistent output over time.

Q 8. For which applications is EXT90304 particularly suitable?

A. It is ideal for low and medium pressure, high flow uses in remote locations and fibre blowing where strong three-phase performance is required.

Q 9. How portable is the 90 litre Extreme 4 3.00hp compressor?

A. The wheel-mounted design, handle and top tool tray support manoeuvrability and convenient accessory storage despite its size.

Q 10. How is pressure output controlled on EXT90304?

A. A pressure cut-off switch and adjustable regulator manage working pressure and stop the compressor automatically at set levels.

Q 11. What noise level does this compressor typically produce?

A. It runs at about 75dB(A), considered reasonable for a high-output, four-cylinder compressor.

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