20 Bar Screw Air Compressor

A 20 bar screw air compressor delivers industrial compressed air at a maximum working pressure of approximately 20 bar / 290 psi.

Operating at significantly higher compression ratios than conventional 7 to 10 bar industrial systems, a 20 bar system requires precise matching of the airend configuration, cooling capacity, lubrication management, pressure-rated piping, and downstream equipment.

PET Bottle Blowing: Supplies high-pressure air spikes required for blow-molding machines, requiring stable pressure consistency and minimal pulsation.

Industrial Pressure Testing: Generates stable high-pressure air for hydro-testing or pneumatic testing of valves, pipes, pressure vessels, and automotive castings.

Leak Testing: Provides repeatable pressure control and stable delivery for high-precision manufacturing leak-detection rigs.

Industrial Process Air: Supports specialized manufacturing lines requiring continuous or cyclical high-pressure utility air.

Continuous high-pressure compression increases internal thermal stress and mechanical load compared to standard plant air systems. Proper engineering control requires:

Optimized Rotor Profiles: High-pressure airends use specialized rotor geometry designed to minimize internal leakage under a 20 bar differential while maintaining volumetric efficiency.

Heavy-Duty Bearings: Thrust and radial bearings are scaled to withstand increased axial loads generated by high discharge pressures.

Thermal Control: Effective oil-injection management maintains stable lubricant viscosity, sealing clearances, and discharge temperatures, preventing oil breakdown under high compression heat.

Pressure Vessel Standards: All high-pressure receivers must comply with certified pressure equipment directives (such as ASME Section VIII or equivalent) to withstand cyclical fatigue.

Pressure Relief Valves: Primary and secondary relief valves must be factory-calibrated to the maximum allowable working pressure.

Foundation Requirements: A reinforced concrete industrial floor is required to absorb the increased static and dynamic torque loads of high-pressure machinery.

Heat Rejection & Ventilation: Compressor rooms must feature engineered ventilation to dissipate high thermal output and maintain safe operating temperatures.

High-Pressure Lubrication Management: High-pressure operation accelerates oil breakdown and thermal stress. The system requires specialized synthetic lubricants with high film strength and oxidation resistance to maintain effective sealing and cooling under a 20 bar differential.

Filtration & Separation Service Intervals: Oil separators and coalescing filters operate under dense compression loads, requiring strict adherence to differential pressure monitoring to prevent oil carryover and excessive energy loss.

Wear Component Monitoring: High-pressure shaft seals, intake valves, and non-return valves experience rapid cycling fatigue and must be inspected according to operating hours rather than standard calendar maintenance schedules.

Performance testing at rated operating pressure to verify volumetric delivery, discharge temperature stability, and power consumption prior to dispatch.

Leak & Hydrostatic Inspection: Pressure-bearing components, internal piping, and oil-gas separators are subjected to pneumatic and hydrostatic pressure testing exceeding standard operating thresholds to verify weld and seal integrity.

Vibration & Electrical Diagnostics: Dynamic balancing of rotating assemblies is measured to minimize mechanical vibration, while electrical control systems undergo insulation resistance and phase protection testing under simulated operational loads.

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