Gmat:
Just to be specific; our water system are hydo systems where we move water. What I was refering to when I stated "hydrolic" was oil based systems. YES water can be used as well but on the systems that I have delt with, a hydrolic oil was used (probably due to its pressure properties)
Also I should have been more clear when I made the accusation:
Head Pressure = NO resistance; how much water can you force up that outlet with nothing attached.
What I should have said was that with nothing attached, the pump will put out a large amount of volume of water with a fininte amount of pressure due to the large volume of water trying to make it through that small opening.
Someones going to dispute me again.... i just know it
