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2. Volute (pump) - Wikipedia

   en.wikipedia.org/wiki/Volute_(pump)

   Pump and volute casing. A volute is a curved funnel that increases in area as it approaches the discharge port. [1] The volute of a centrifugal pump is the casing that receives the fluid being pumped by the impeller, maintaining the velocity of the fluid through to the diffuser. As liquid exits the impeller it has high kinetic energy and the ...

3. Haywardville, Massachusetts - Wikipedia

   en.wikipedia.org/wiki/Haywardville,_Massachusetts

   In the early 1800s, Nathaniel Hayward bought remodeled shoe mills in Stoneham, Massachusetts from Elisha Converse, founder of the largest rubber shoe manufacturer in the world, the Boston Rubber Shoe Company in Malden, Massachusetts.

4. Flexible impeller - Wikipedia

   en.wikipedia.org/wiki/Flexible_impeller

   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.

5. Roots blower - Wikipedia

   en.wikipedia.org/wiki/Roots_blower

   The Roots-type blower may achieve an efficiency of approximately 70% while achieving a maximum pressure ratio of two. Higher pressure ratios are achievable but at decreasing efficiency. Because a Roots-type blower pumps air in discrete pulses (unlike a screw compressor), pulsation noise and turbulence may be transmitted downstream. If not ...

6. AOL.com - News, Sports, Weather, Entertainment, Local & Lifestyle

   www.aol.com

   AOL latest headlines, entertainment, sports, articles for business, health and world news.

7. Rotary vane pump - Wikipedia

   en.wikipedia.org/wiki/Rotary_vane_pump

   An eccentric rotary vane pump Another eccentric rotary-vane pump design. Note that modern pumps have an area contact between rotor and stator (and not a line contact). 1. pump housing 2. rotor 3. vanes 4. spring. A rotary vane pump is a type of positive-displacement pump that consists of vanes mounted to a rotor that rotates inside a cavity. In ...