The standards governing hydraulic fittings are primarily based on relevant international and domestic industry specifications; the most widely adopted among these are ISO (International Organization for Standardization) standards, DIN (German Industrial Standards), and GB (Chinese National Standards). These standards establish detailed specifications regarding the structure, dimensions, materials, performance testing, and safety requirements of hydraulic fittings.
Industry standards also address requirements concerning the interchangeability and compatibility of fittings, ensuring that hydraulic fittings manufactured by different vendors can integrate seamlessly within the same system. This is of significant importance for maintaining the stability of hydraulic systems and reducing maintenance costs.
It is worth noting that, as hydraulic technology continues to evolve, the applicable standards are also continuously being updated and refined. Therefore, when selecting hydraulic fittings, in addition to verifying their compliance with current standards, one should also consider their potential to accommodate future technological upgrades.
The selection of hydraulic fittings must adhere to international standards (such as ISO 8434, DIN 2353, and SAE J514) or internal corporate specifications. Key parameters to consider include:
Working Pressure: Typically calculated using a safety factor of 1.5 times the rated pressure.
Temperature Range: -40°C to +200°C (depending on the material).
Flow Diameter Matching: Must align with the internal diameter of the tubing to prevent flow resistance.
Vibration Resistance: For applications involving high-frequency vibration, designs featuring anti-loosening mechanisms (such as lock nuts) should be selected.
