How many psig in 1 feet of water?
The answer is 0.433527501928.
We assume you are converting between pound/square inch [gauge] and foot of water [4 °C].
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psig or feet of water
The SI derived unit for pressure is the pascal.
1 pascal is equal to 0.000145037738007 psig, or 0.000334552565551 feet of water.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between pounds/square inch and feet of water.
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Psig (pound-force per square inch gauge) is a unit of pressure relative to the surrounding atmosphere. By contrast, psia measures pressure relative to a vacuum (such as that in space). At sea level, Earth's atmosphere actually exerts a pressure of 14.7 psi. Humans do not feel this pressure because internal pressure of liquid in their bodies matches the external pressure. If a pressure gauge is calibrated to read zero in space, then at sea level on Earth it would read 14.7 psi. Thus a reading of 30 psig on a tire gauge represents an absolute pressure of 44.7 psi.
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