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Plant air supply pressure

2026-04-15Views:

The range of supply pressures for plant air sources varies depending on the application and equipment requirements, but the following criteria are generally followed:

1. conventional air supply pressure range

  • pneumatic system:
    • air compressor output pressure: Generally 0.6-0.8MPa(6-8kg), some high-efficiency equipment can reach 1.0MPa.
    • Pressure adjustment with gas point: Usually adjusted to 0.4-0.6MPa to meet the needs of pneumatic tools, transmissions, etc.
    • Centralized gas supply pressure: Set to 0.5MPa, taking into account economy and reliability.
  • Steam system:
    • low pressure steam: The national standard is 0.1-1.6MPa, and the common pressure in factories is ≤ 0.3MPa.
    • chemical steam: Low pressure rating is usually ≤ 1.57MPa.
  • Special gas supply pressure:
    • nitrogen, Argon, Oxygen: 40L loading pressure range is 13.5±0.5MPa.
    • Helium: Usually 14.5±0.5MPa.
    • laser gas: Part of the gas pressure is 10MPa or 14.5±0.5MPa.
    • Standard gas the pressure is usually around 9.81MPa(10MPa).
    • liquefied gas: The pressure is the saturated vapor pressure at a specific temperature (e. g. 0.8MPa at 20 ℃ of propane).

2. pressure demand in different industries

  • food & Beverage compressed air in direct contact with food should give priority to the control of oil content, and the pressure is usually set to 0.5-0.6MPa.
  • Electronic Manufacturing the gas used for precision equipment shall be equipped with a pressure stabilizing device, and the pressure fluctuation shall be controlled within ± 0.01MPa.
  • Chemical and Energy: Medium and low pressure steam (0.5-1.0MPa) is required for stirring and instrument control of some reactors.
  • Natural gas supply the pressure of industrial natural gas is generally 0.1-1.0MPa, while that of civil natural gas is lower (0.05-0.1MPa).

3. pressure setting principle

  1. equipment adaptability: Adjust according to the rated pressure of pneumatic tools, valves and other equipment to avoid overload or inefficiency.
  2. Economy: Under the premise of meeting the process requirements, low pressure is preferred to reduce energy consumption and equipment loss.
  3. Security: It shall meet the pressure vessel specification (such as GB150), and the pressure level shall match the pressure bearing capacity of pipelines, valves and other components.

4. Management and Maintenance

  • regular inspection: Regularly check and calibrate the pressure gauge, pressure regulator and other equipment of the gas supply system.
  • establish a system: Develop a management system to manage and monitor the gas supply system to ensure safe and stable operation.

Summary: The gas supply pressure range of the factory gas source is usually 0.1-1.0MPa, and the specific setting shall be comprehensively considered in combination with equipment requirements, process specifications and economy. For special gas or high pressure requirements, it is necessary to adjust according to industry standards and equipment requirements, and establish a strict management and maintenance system.

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