Temperature: Temperature of both the fluid conveyed and environmental conditions

 

Two areas of temperature must be considered: fluid temperature and ambient temperature.  The hose selected must be capable of withstanding the minimum and maximum temperature seen by the system.  Care must be taken when routing near hot manifolds and in extreme cases a heat shield may be advisable.

 

• Maximum Intermittent Ambient Temperature: Hose constructions which use a rubber inner tube and/or cover can have significant change in properties when exposed to extreme heat or cold.  This may require some hoses to be rated to a lower operating pressure when exposed to such conditions.
• Fluid Temperature: The fluid temperature is the temperature of the fluid being conveyed inside of the hose during operation.
• Ambient Temperature: The ambient temperature is the temperature of the environment to which the hose assembly is exposed.
• Maximum Temperature: The maximum temperature is the highest temperature to which the fluid or environment may reach.  This temperature is typically short in duration and occurs under extreme operating conditions.  The hose selected for an application should be rated at or above the maximum ambient and maximum fluid temperature.
• Minimum Temperature: The minimum temperature is the lowest temperature to which the hose assembly will be exposed.  For a hydraulic system, this is based on the minimum ambient temperature.  A hose should be rated at or below the minimum ambient temperature to which the assembly may be exposed to.

 

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