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Hand-operated lever grease gun 97X300, 400 cm³ with 300 mm hose
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Medium approval before connection type
| Starting point | Result | Still to check |
|---|---|---|
| The system medium is compressed air | Compare only equipment explicitly approved for compressed air | Function, working pressure, connection and required air treatment |
| The system medium is another precisely identified gas | Exclude compressed air equipment unless the manufacturer has approved it for that gas | Medium, pressure, temperature, materials, seals and applicable system requirements |
| The medium has not yet been identified | Do not select equipment by connection size | Obtain the missing specification from the system documentation or the person responsible for planning |
Example: an existing connection but an unidentified medium
A device and the existing line have similar-looking connections. That is not enough to select the device. If its documentation specifies only compressed air, it is excluded for another gas until explicit approval from the equipment manufacturer is available. Only then should pressure, temperature, the mating connection and what is included be compared.
Festo explicitly describes the linked regulator range as a compressed air solution and excludes water and hydraulic applications. This manufacturer example shows why the medium specification comes before the connection type; it does not approve other equipment or gases. Relevant categories: Compressed air and gas accessories and Compressed air couplings and connectors.
Technical reference: Festo: Pressure regulators for compressed air.
Check compressed air lines for winter
The category name does not replace approval for the medium or operating conditions. The guide Compressed air hoses in winter helps you compare the hose, coupling, operating pressure, temperature limits and working length as a system.
