Test Methods for Hose Assemblies

Working and Test Pressure

The working pressure corresponds to about 25% of the specified bursting pressure, achieving a safety factor of 4. In case of special hoses or very large nominal diameters the safety factor may be somewhat reduced, but should never be lower than safety factor 3. However, this falls under the responsibility of the hose manufacturers.

The test pressure that every finished hose assembly should be subjected to is generally 60% of the bursting pressure, so that the hose is required to prove a sufficient safety factor during the test.

Bursting Pressure

The bursting pressure of a hose assembly is a theoretical value without any use to the user. The specification of the bursting pressure in itself is not very meaningful due to the wide variety of definitions. In practice, with consideration of safety requirements to be met by every system, this value may never even be approached remotely.

The test methods to establish the bursting pressure of a certain type of hose are definied in the following standards: SAE J343. SAE J1415, ISO 6802, ISO 6803. A hose assembly of a certain length is closed at one end and then subjected to a continually rising liquid pressure until it bursting occurs.

Voswinkel employs state-of-the-art inspection methods - thus guaranteeing the highest level of operational reliability.