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 Inches Pressure into PSI 
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Joined: Sat Oct 03, 2015 1:38 pm
Posts: 75
Does 40" mean 40 inches water pressure.
If so when I convert this to bar then psi,that is only 0.14PSI

The digital manometers online stop reading anything above 2.0psi.
So any of those digital manometers will do?

Sun Jun 04, 2017 4:20 am

Joined: Wed Mar 03, 2010 3:40 pm
Posts: 1298
Location: Melbourne, Australia
An easy way to remember, 28 inches is very close to 1 Psi.

Yes, forty inches of pressure means forty inch column of water in a manometer tube.

Two psi will get you up to about 55 inches which will be fine for a flow bench..

Also known as the infamous "Warpspeed" on some other Forums.

Sun Jun 04, 2017 7:35 pm
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