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#Rotor · 08-23-2003, 06:37 AM

drill pumps are direct displacement pumps. they have very high internal friction, thus will not last very long . it also requires a lot of torque to opperate them.

08-23-2003, 06:37 AM	#7
#Rotor Cooling Savant Join Date: Feb 2002 Location: Dione, sector 4s1256 Posts: 852	drill pumps are direct displacement pumps. they have very high internal friction, thus will not last very long . it also requires a lot of torque to opperate them. __________________ There is no Spoon....