bleed orifice

bleed orifice

A calibrated orifice used in a fluid power system to allow a controlled flow of fluid into the system when it is in operation. When the system is not in operation, all of the pressure is bled off through the bleed orifice.
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References in periodicals archive ?
Bleed orifices can be used so that clean air is drawn through the drain port, creating a flushing effect.