Precautions for choosing a hose component solution
Temperature
Identify the minimum and maximum temperatures the hose assembly will be exposed to in the system
media and environment.
Pressure
Identify the minimum and maximum pressures (or vacuum) within and outside the hose assembly.
Identify the system media and the environment that the hose assembly will be exposed to. This will help
determine the materials best suited to the application demands.
Material Movement
Confirm whether the hose assembly will be installed in dynamic applications as this will require
differentconsiderations than a static application.
Length
Determine the most likely route for installation of the hose, use this to identify required length. Note:
Different types of hoses vary in measuring position. For hoses with pipe fittings, length loss due to
threading into the mating fitting should be taken into account.
Cleanliness
Identify the cleanliness need.
End Connection
Identify the type of end connections that are most compatible with the system requirements. End
connections differ in materials of construction and pressure ratings. Address space constraint concerns.
Hose assemblies with elbows and union ball joints may help resolve space constraint issues.
Orientation Desired Flow
Consider desired flow. Hose connection size, core tube construction, and installation route may impact
flow.
Additional Protection
Identify whether additional protection is necessary for the hose assemblies or surrounding systems.
Permeability
Nylon, PFA, polyethylene, PTFE, and rubber are permeable materials. Gases and vapors may migrate
through cores of these materials. The permeation rate is affected by many factor variables.
