20 Bar Air Compressors

20 bar electric model examples from the supplier catalogue

The model table above is drawn from the Dezhou YITong electric medium/high-pressure selection catalogue. Every displayed row combines a `/20` model code with a source-table pressure entry of 2 or 2.0 MPa. For customer comparison, that pressure is expressed as 20 bar (2.0 MPa). The examples include EBLW entries at 1, 2 and 3 m³/min nominal flow and EBLGII entries from 3.5 to 33 m³/min nominal flow.

Use these as catalogue model examples, not as an unqualified package specification. The table preserves the catalogue's nominal m³/min designation and does not relabel it as FAD. Its motor figures are rated motor power; auxiliaries, controls and cooling can change the electrical boundary of the complete package. The quotation should restate delivered flow, pressure, test conditions and included scope for the selected configuration.

• Pressure shown for this page: 20 bar (2.0 MPa).
• Catalogue designations represented: EBLW and EBLGII electric medium/high-pressure models.
• Catalogue nominal flow is kept in m³/min and is not presented as FAD.
• The exact offered model, cooling method, drive and package scope belong in the quotation.

20 bar model structure: family-level design information

The supplier manual describes more than one compression arrangement within its medium/high-pressure family; a 20 bar label does not identify one universal internal design. It describes 1, 2 and 3 m³/min models as twin-screw-and-scroll arrangements. For the 4, 5 and 6 m³/min family it describes either a parallel small-displacement arrangement or a combination of two twin-screw units with one single-screw unit. For models at 23 m³/min and above, it describes a two-stage twin-screw-and-scroll arrangement. Other regular models are described at family level as single-screw or twin-screw constructions.

That description supports a structural comparison, but it does not assign every construction detail to every individual model in the 20 bar table. Request the exact compression arrangement, stages, cooling layout and lubricant circuit for the offered model. The source range is lubricated/oil-injected compression equipment; downstream treatment can be specified for the required air quality, but this does not turn the compressor into an oil-free machine or establish point-of-use purity.

Specify the 20 bar package and treatment as one pressure-rated system

A 20 bar compressor alone does not define the air available at a machine. State the required pressure at the point of use, then allow for the actual losses through the aftercooler, moisture separator, dryer, filters, receiver, valves, piping and final regulator. The quotation should identify the design pressure and temperature basis for every pressure-containing component, including receiver, treatment equipment, hoses and fittings—not only the compressor discharge label.

The supplier manual lists air-cooled and water-cooled alternatives and a separate aftercooler option for this family. Treat those as configuration choices to be stated in the offered scope, not as standard inclusions. Select drying, filtration and drains from the required point-of-use particle, water and oil limits, actual inlet conditions and allowed pressure loss. A filter or dryer pressure rating does not by itself demonstrate the rating of the assembled system.

Applications where a 20 bar branch may be evaluated

A 20 bar branch should be tied to a documented process requirement rather than used as a higher-pressure substitute for ordinary plant air. Suitable starting cases are an OEM-defined high-pressure blowing or forming step, a controlled test or leak-test duty, or a dedicated process/actuator branch that explicitly requires this pressure range. In each case, obtain the OEM's pressure tolerance, required flow, air-quality limit and duty profile before choosing direct compression or a booster arrangement.

For PET bottle blowing, separate the high-pressure blowing event from the lower-pressure auxiliary air used by controls, conveyors or other packaging functions. The machine maker's specification remains decisive: this page does not state that every PET system operates at 20 bar. Review the related PET bottle blowing system page and packaging air page alongside the machine documentation.

• High-pressure process air only where the equipment documentation specifies the pressure and flow.
• Short, repeated test or blow events only after storage and recovery are calculated.
• Separate high-pressure and general plant-air zones where the duty supports that layout.

Installation checks and maintenance basis

Before installation, define electrical supply, ventilation or cooling-water interfaces, heat rejection, condensate handling, service access, lifting and foundation needs. The final layout should show isolation, non-return protection, relief protection, drains, gauges and safe access to filters, coolers and the receiver. Confirm local pressure-vessel and piping obligations with the responsible project team and authority.

Use the offered equipment's operation and maintenance documentation for service intervals. At routine inspections, include drains, filter differential pressure, cooler cleanliness, leaks, instrument readings and protective-device checks within the OEM and site safety plan. For concise common methods, use the pressure selection guide, flow-basis guide, pressure-drop guide and air receiver sizing guide instead of relying on an unqualified universal schedule.