& Design > Pressure
Rated Working Pressure
maximum pressure that the hose should be subjected to on a continuous
basis. OmegaFlex establishes this rating by multiplying the nominal rated
burst pressure by 25%. Published pressure is calculated at 70°F.
Maximum Rated Test
The maximum pressure the hose should be subjected to during proof pressure
or system testing. Hose corrugation deformation will occur if the maximum
rated test pressure is exceeded. The maximum rated working pressure is
multiplied by 150% to determine the maximum rated test pressure.
Nominal Rated Burst
The average pressure at which the core or braid will rupture at ambient
temperature. Proper hose assembly fabrication techniques must be used
to ensure the hose will meet OmegaFlex published pressures.
Pulsating or Shock
The performance of metal hose can be greatly reduced under this type of
working pressure. Pressures are normally reduced by 50% in pulsating or
shock pressure applications.
Contact OmegaFlex for additional information
on this application.
Metal hose pressure capabilities decrease as the temperature increases.
Consult the temperature
correction factor table to determine pressure rating at elevated temperatures.
The maximum working pressure should not be greater than 25% of the nominal
rated burst pressure after correcting for the application temperature.
The safety factor is generally expressed as a ratio of 4:1.
Pressure drop occurs in long hose runs. The amount of pressure loss is
approximately 3 times that of steel pipe. Contact OmegaFlex if more accurate
calculations are required.