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A flexible impeller pump is a positive-displacement pump that, by deforming impeller vanes, draws the liquid into the pump housing and moves it to the discharge port with a constant flow rate. The flexibility of the vanes enables a tight seal to the internal housing, making the pump self-priming , while also permitting bi-directional operation.
In self-priming centrifugal pumps with a separation chamber the fluid pumped and the entrained air bubbles are pumped into the separation chamber by the impeller action. The air escapes through the pump discharge nozzle whilst the fluid drops back down and is once more entrained by the impeller. The suction line is thus continuously evacuated.
This is a list of the National Register of Historic Places entries in Columbus, Ohio, United States.The National Register is a federal register for buildings, structures, and sites of historic significance.
AmeriFlora '92 logo. AmeriFlora '92 was an international horticultural exhibition held in Columbus, Ohio, United States from April 20 to October 12, 1992.Taking place on 88 acres (356,123 m 2) of landscaped grounds at Franklin Park, the exhibition cost $95 million to produce and attracted 5.5 million visitors.
The oldest surviving botanical garden in the United States is Bartram's Garden in Pennsylvania. [1] [2] This list is intended to include all significant botanical gardens and arboretums in the United States. [3] [4] [5] The total number of botanical gardens recorded in the United States depends on the criteria used, and is in the range from 296 ...
The simplest inlet to a centrifugal compressor is typically a simple pipe. Depending upon its use/application inlets can be very complex. They may include other components such as an inlet throttle valve, a shrouded port, an annular duct (see Figure 1.1), a bifurcated duct, stationary guide vanes/airfoils used to straight or swirl flow (see Figure 1.1), movable guide vanes (used to vary pre ...
Nate Tice and Matt Harmon react to the latest news in the NFL coaching carousel, including Liam Coen, Aaron Glenn, Pete Carroll and Brian Schottenheimer all filling head coaching vacancies.
The flow within a cross-flow fan may be broken up into three distinct regions: a vortex region near the fan discharge, called an eccentric vortex, the through-flow region, and a paddling region directly opposite. Both the vortex and paddling regions are dissipative, and as a result, only a portion of the impeller imparts usable work on the flow ...