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Liquid-ring pumps are typically used as vacuum pumps, but can also be used as gas compressors. The function of a liquid-ring pump is similar to a rotary vane pump, with the difference being that the vanes are a rigid part of the rotor and churn a rotating ring of liquid to form the compression-chamber seal. They are an inherently low-friction ...
Different types of pumps are suitable for different applications, for example: a pump's maximum lift height also determines the applications it can be used for. Low-lift pumps are only suitable for the pumping of surface water (e.g., irrigation, drainage of lands, ...), while high-lift pumps allow deep water pumping (e.g., potable water pumping ...
For home video releases on formats other than DVD and Blu-ray, see List of other Doctor Who home video releases. This is a list of Doctor Who serials and episodes that have been released on DVD and Blu-ray. DVD Release Most Doctor Who DVDs have been released first in the United Kingdom with Region 2, and released later in Australia and New Zealand (Region 4) and in North America (Region 1 ...
This list of best-selling films in the United States is a list of the best-selling home video film titles sold in the United States. This list only includes physical media (such as VHS , DVD and Blu-ray ), and does not include digital purchases or video rentals .
City of Lost Toys: DVD details: Special features: 2 episodes (plus 2 bonus episodes from Swing into Action! VHS) 1.33:1 aspect ratio; Languages: English (Dolby Digital 2.0)Parents Guide
Best Products Company, Inc., or simply Best, was a chain of American catalog showroom retail stores founded by Sydney and Frances Lewis in 1957 and formerly headquartered in Richmond, Virginia. The company was in existence for four decades before closing all of their stores by February 1997 and completely liquidating by December 1998.
The PlayPump water system is a playground merry-go-round attached to a water pump. The spinning motion pumps underground water into a 2,500-liter tank raised seven meters above ground. The water in the tank is easily dispensed by a tap valve. According to the manufacturer the pump can raise up to 1400 liters of water per hour from a depth of 40 ...
Genius Products (formerly known as Genius Entertainment) was a home entertainment company based in Santa Monica, California, United States.. The Baby Genius line was one of a number of "smart toys" that came out in response to a study book about the Mozart effect.