Air compressor rated pressure and working pressure in general

air compressor rated pressure and working pressure it is a key parameter for selection and use, and its range varies by device type and application scenario. Here is the detailed description:

1. pressure rating

1. definition when the air compressor is running continuously at rated speed and rated conditions maximum exhaust pressure.
2. Common range:
   • piston air compressor: 0.7-1.5 MPa (suitable for small scenes).
   • Screw air compressor: 0.7-3.5 MPa (mainstream choice for medium and large enterprises).
   • Centrifugal air compressor: 1.0-5.0 MPa (suitable for large flow and high pressure requirements).
3. Example:
   • the pressure of spraying equipment shall be above 2.0 MPa.
   • Mine rock drill 2.5-3.0 MPa.

2. working pressure

1. definition: The actual operation of the air compressor output pressure, Usually lower than the rated pressure to ensure stability.
2. Common range:
   • general industry0.5-0.8 MPa (pneumatic tools, purging, etc.).
   • High Demand Scenarios:
     • laser cutting: 1.0-1.5 MPa.
     • Pharmaceutical packaging: 0.6-0.8 MPa (need to cooperate with precision pressure regulating valve).
3. Safety recommendations: The long-term working pressure should not exceed 80% of the rated pressure to extend the life of the equipment.

3. selection and use recommendations

1. matching requirements:
   • manufacturing: Screw type (rated pressure 1.0-2.5 MPa) is preferred.
   • Laboratory: Select silent oil-free air compressor (rated pressure 0.7-1.0 MPa).
2. Pressure matching:
   • example: If the equipment needs 0.6 MPa, an air compressor with a rated pressure of 0.7-0.8 MPa can be selected.
3. Energy saving considerations:
   • the variable frequency air compressor can automatically adjust the pressure to avoid long-term high-pressure operation.

Summary: The rated pressure of the air compressor is usually 0.7-5.0 MPa, and the working pressure should be set according to the demand and lower than the rated value. The selection should be combined with industry pressure requirements, equipment types and energy-saving requirements to ensure pressure matching and stable operation.