# Determining psi from a water pump

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Hi,

I'll start by stating my intentions. I'm looking at buying a water pump to power a vacuum aspirator I have bought (link) and I want to make sure it can put out 30 psi so I can get a good vacuum from it. At the moment I'm looking at the water pump located at bottom of https://cheappumps.com/products.php?al=inpumps. It says it has a flow rate of 130GPH.

My question is, is there any way to determine the pressure from this? It seems that there must be some way, but my understanding of physics is curently limited (just taking high school physics now). Any help would certainly be appreciated.

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Hi,

I'll start by stating my intentions. I'm looking at buying a water pump to power a vacuum aspirator I have bought (link) and I want to make sure it can put out 30 psi so I can get a good vacuum from it. At the moment I'm looking at the water pump located at bottom of https://cheappumps.com/products.php?al=inpumps. It says it has a flow rate of 130GPH.

My question is, is there any way to determine the pressure from this? It seems that there must be some way, but my understanding of physics is curently limited (just taking high school physics now). Any help would certainly be appreciated.

32 feet of head is 14.7 psi or one atmosphere.

Maximum head from that pump is 42 inches. That is less than 2 psi.

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Oh wow, I totally didn't see the max head of that pump, that makes things easier. Thanks!

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