sachinlshinde123

 Profile Answers by sachinlshinde123 

• Jul 3rd, 2009

 

Positive displacement pump are those which discharge specific amount & quantity is constant non positive pumps are those which discharge random amount & quantity varies.

vrsaikumar

 Profile Answers by vrsaikumar Questions by vrsaikumar

• Jul 9th, 2009

 

Positive displacement pumps are those which prevents undesirable flow and pumps the fluid within the closed space.
Ex: Reciprocating pumps, Rotary pumps. Its efficiency is more when compared to non-positive displacement pumps.

Non-positive displacement pumps have no provisional to prevent the reversal of flow. We can say that there may be some loses in this kind of pumps, but the main advantage is it can be used when high pressure and large quantity of fluid is to be pumped.