drukklassen

Drukklassen are categories used to classify the maximum pressure that a component, product, or system is designed to withstand during operation. The concept is applied in engineering, installation and procurement to ensure compatibility and safety. A higher drukklasse indicates a higher permissible operating pressure, while a lower klasy limits the pressure to stay within safe bounds.

In practice, drukklassen are expressed in units such as bar or megapascals (MPa) and are often tied to standardized ratings. For piping and fittings, the term is commonly aligned with PN (pressure nominal) ratings, such as PN10 or PN16, which correspond to specific maximum pressures. Hoses, valves and similar components may list a pressure class directly in bars (for example, 6 bar or 16 bar). The exact meaning of a drukklasse can vary by product type and standard, so the datasheet or label should be consulted.

Applications of drukklassen span hydraulics, pneumatics, water supply, gas installations, and other systems where pressure containment is critical. They help engineers select compatible parts, design safe systems, and comply with codes and standards. Mismatch between a component’s drukklasse and the system’s operating pressure can lead to leaks, deformation, or failure, so verification against the relevant standard is essential.

Determination and verification typically involve checking product documentation, nameplate markings, or certification documents. Standards from organizations such as EN, ISO, or national bodies (for example, NEN in the Netherlands) guide the assignment of drukklassen, though exact definitions can differ between manufacturers.