Topic: Positive Displacement Pump Cavitation
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Answers to Common Questions
Why cavitation will occur in Centrifugal Pumps and not in displac...
Cavitation occurs when the pressure on a liquid drops below the vapor pressure for the liquid or when gas is otherwise introduced to a pump such that it disrupts the flow of the liquid through the pump. Positive displacement pumps trap a qu... Read More »
Source: http://wiki.answers.com/Q/Why_cavitation_will_occur_in_Centrifuga...
What is a positive displacement pump?
Answer A positive displacement pump causes a liquid or gas to move by trapping a fixed amount of fluid or gas and then forcing (displacing) that trapped volume into the discharge pipe. Positive displacement pumps can be further classified a... Read More »
Source: http://wiki.answers.com/Q/What_is_the_difference_between_a_centri...
What is a non-positive displacement pump?
A hydraulic pump that uses an impellor or propellor to move fluid by momentum, as opposed to a positive displacement pump, which moves discrete quantities of fluid with each rotation. A typical application of a non-positive displacement pum... Read More »
Source: http://wiki.answers.com/Q/What_is_non_positive_displacemtent_pump
More Common Questions
Answers to Other Common Questions
A Hydraulic Reciprocating Pump,is also called a positive displacement pump,as it discharge a definite quantity of Liquid during the Displacement of its Piston.
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Source: http://wiki.answers.com/Q/Why_reciprocating_pump_is_called_positi...
replacing equal quantity of liquid from cavity is called positive displacement. let understand it by an example : lets assume you fill a bath tube up to the very top - there is no room for anything else. Then step in the bath. What happens?...
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Source: http://wiki.answers.com/Q/Why_positive_displacement_pump_is_calle...
A positive displacement pump causes fluid to move by trapping a fixed ...
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Source: http://www.chacha.com/question/what-is-a-positive-displacement-hy...
A positive displacement pump causes a fluid to move by trapping a fixed amount of it then forcing (displacing) that trapped volume into the discharge pipe. Centrifugal pumps impart pressure to the fluid, to cause a pressure differential and...
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Source: http://wiki.answers.com/Q/Why_centrifugal_pump_is_not_called_a_po...
Pumps -- Centrifugal vs. Positive Displacemen Two Categories -- Kinetic (Centrifugal) and Positive Displacement There are two main categories of pumps - kinetic and positive displacement. Almost all pumps fall into one of these two categori...
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Source: http://wiki.answers.com/Q/What_is_the_differences_between_positiv...
Non-positive displacement has slippage inside the pump and it is a continous, variable flow. But positive displacement has no slippage inside the pump, and it is a constant flow.
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Source: http://wiki.answers.com/Q/What_is_the_difference_between_a_positi...
If you do not have a negative and postive pump then they are unequal you need both.
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Source: http://answers.yahoo.com/question/index?qid=20060831221533AA8ZoCv
