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Old 11-19-2013, 11:14 PM   #21
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AusCan, thanks.
I should of said 2.3' below water line equals 1 psi.

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Old 11-20-2013, 03:27 PM   #22
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Originally Posted by cardude01 View Post
Stupid question probably, but could an air hose be connected between the strainer and the seacock so clogs could be cleared from inside the boat using compressed air? Blowing the obstruction out into the water? Or would the water pressure too much for the air?
It's not a stupid question, but it could well be a dangerous thing to try. For this to work, the raw-water pump would have to resist the air pressure until the clog clears - the alternative being that a vane in the pump would deflect and let the air out through the heat exchanger(s) and into the muffler. If it did work, you could be subjecting a (Perko?) strainer to anywhere between 0 and 120 psi of shop air. Can you spell shrapnel!

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