Regarding whether a media filter requires a special equipment license
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The pressure is 0.6 Mpa, the medium is water, the filter media is quartz sand, the volume is around 8 m3, and the temperature is below 30 degrees. Does this media filter require a license? Is it a special type? It’s still a simple pressure vessel; urgently needed
If the medium is only water with no other gaseous substances, and the temperature is below the standard boiling point, it does not constitute a pressure vessel
For pressure vessels not subject to regulatory requirements, you can proceed with confidence – no permits are needed
According to the definition of pressure vessels, your medium filter does not meet the requirements of clause 3, so it does not qualify as a pressure vessel. Definition of pressure vessels: To distinguish them from ordinary containers (atmospheric pressure containers), only those containers that meet all of the following three conditions can be referred to as pressure vessels: (1) The operating pressure (Note 1) is greater than or equal to 0.1 Mpa (operating pressure refers to the highest pressure that may occur at the top of the pressure vessel under normal operating conditions, measured as gauge pressure; hydrostatic pressure is not included). (2) The inner diameter (for non-circular cross-sections, this refers to the largest dimension) is greater than or equal to 0.15 m, and the volume (V) is greater than or equal to 0.025 cubic meters; moreover, the product of the operating pressure and the volume is greater than or equal to 2.5 MPa·L (volume refers to the geometric volume of the pressure vessel). (3) The medium contained within is a gas, a liquefied gas, or a liquid whose highest operating temperature is greater than or equal to its standard boiling point.
Check whether the volume of the load is full; if the volume of the unloaded portion exceeds the requirements specified in the solid content regulations, it may be necessary to reclassify it. The poster should refer to the annotations in those regulations to make a determination.