
1) Engine technology
Found on
https://www.crosswordclues.com/clue/back-pressure

Back pressure refers to pressure opposed to the desired flow of a fluid in a confined place such as a pipe. It is often caused by obstructions or tight bends in the confinement vessel along which it is moving, such as piping or air vents. Because it is really resistance, the term back pressure is misleading as the pressure remains and causes flow ...
Found on
http://en.wikipedia.org/wiki/Back_pressure

Back pressure usually refers to the pressure exerted on a moving fluid by obstructions or tight bends in the confinement vessel along which it is moving, such as piping or air vents, against its direction of flow.
Found on
http://en.wikipedia.org/wiki/Glossary_of_fuel_cell_terms

The applied hydraulic pressure used to restrict the shot size formation. Applied to the back of a melt accumulator or reciprocating screw. Used to control screw drift, mixing, and shot size adjustments. In molding, back pressure increases the temperature of the melt, and contributes to better mixing of colors and homogeneity of the material.
Found on
http://www.blowmachines.com/glossary1.htm

Pressure exerted upstream in the circulation as a result of obstruction to forward flow, as when congestion in the pulmonary circulation results from stenosis of the mitral valve or failure of the left ventricle. ... (05 Mar 2000) ...
Found on
http://www.encyclo.co.uk/local/20973

the pressure resulting from restriction of full natural flow of oil or gas.
Found on
http://www.encyclo.co.uk/visitor-contributions.php

1. the pressure maintained on equipment or systems through which a fluid flows. 2. in reference to engines, a term used to describe the resistance to the flow of exhaust gas through the exhaust pipe. 3. the operating pressure level measured downstream from a measuring device.
Found on
http://www.encyclo.co.uk/visitor-contributions.php

Type: Term Definitions: 1. pressure exerted upstream in the circulation as a result of obstruction to forward flow, as when congestion in the pulmonary circulation results from stenosis of the mitral valve or failure of the left ventricle.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=71964

The pressure caused by a reciprocating engine
Found on
http://www.sportpilot.org/learntofly/glossary.html

The viscosity resistance of a material to continued flow when a mold is closing. In extrusion, the resistance to the forward flow of molten material.
Found on
https://www.emcoplastics.com/plastic-glossary-of-terms/

A pressure that can cause water to backflow into the water supply when a user's waste water system is at a higher pressure than the public system.
Found on
https://www.encyclo.co.uk/local/20094

The pressure produced by restrictions in an exhaust system. Back pressure affects the rate at which exhaust gases are extracted from the cylinders.
Found on
https://www.encyclo.co.uk/local/22335

Propagation of network congestion information upstream through an internetwork.
Found on
https://www.encyclo.co.uk/local/22803

The resistivity of molten plastic material to forward flow.
Found on
https://www.ptonline.com/knowledgecenter/profile-extrusion/glossary-of-term
No exact match found.