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Question:

How can I test how high a water pump can pump to, using only pressure simulation?

A pump is said to be capable of pumping water up to 100 meters, but I don't want to confirm that by actually putting up a very long pipe to that height. I know that pressure is related to height, so putting pressure at the output end of the pump would simulate different heights. Any suggestions how I can rig a contraption to do this? Thanks.

Answer:

Install a pressure gauge at the pumps diischarge line and note that p=wh. H =p/w, H =p{(144)/62.4}/3.28 meters Pressure expected therefore in psi, is p={62.4/144}3.28 p=14.9 psi A pressure gauge of 0 to 50 psig range would be sufficient to indicate the expected pressure.
*you can go by the 1st answer as pressure gauge near the pump discharge would give a maximum pressure inclusive of losses. As the losses are more[due to piping congetion or rasistance from the equipment to which it is pumping.] then the discharge head will be decreased. *Simply, in case of a centrifugal pump,close the discharge valve fully for a moment and check the discharge pressure. This is the maximum pressure ,your pump will pump. *Dont do this if the pump is positive displacement pump/regenerative turbine pump. Edit: Discharge head means pumping height in your case.

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