28.11.08

MAXIMUM PRESSURE?

Do Not specify Head as Maximum 16 bar

Specify the Operating Pressure

Pump Manufacturer may specify Maximum Working pressure as 16 bar on the catalogue
but it does not mean that the pump can operate with a discharge pressure of 16 bar

A pump with a discharge pressure of 8 bar and 16 bar .makes a huge difference in term
of Pump Size & the Motor KW

As I had always mentioned if you are not sure of the Discharge Head ,check the Guages of existing unit or Calculate

Also .when you increase flow for the same diameter of pipeline,the discharge head increases as well
For Bulking Installation ,pumping for factories to Ship the pipeline is usually quite long ,
and this is make a huge difference in pumping head

Suction Line is equally important , as pumps are located at Pumping Station a distant away
from the Tank Farm .When level in the tank drop ,the NPSH avialable is the system will also
drop . Cavitation will take place .One way of ditecting is looking at the running ampheres

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