backpressure
Noun
Meaning
(dynamics) pressure that is opposed to the flow of a fluid
(computing) The buildup of unprocessed data due to a bottleneck
Source: en.wiktionary.orgExamples
Featured at the show is the popular heavy-duty muffler for Freightliner Century Class applications offering a straight through flow for minimum backpressure and bridge-constructed inlets and outlets for vibration resistance.
There is some quality exhaust system which eventually reduces the noise with optimum size and backpressure.
The typical vacuum maintained in the Condenser steam space at the exhaust of the turbine (also called Condenser Backpressure) is in the range 5 to 15 kPa (absolute), depending on the type of condenser and the ambient conditions.