Converting Pressure to Pounds Per Square Inch

Sometimes pressure is expressed in terms of “Feet of Water” “Feet of Head”. To convert to pressure in standard terms of “pounds per square inch” (PSIG) do the following.

 Feet of Water x .433 = PSIG


PSIG x 2.31 = Feet of Water

For example: 15ft of water x .433 = 6.5 PSIG

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About Eaton's Filtration Business
Eaton’s Filtration business is a global leader in manufacturing filtration products that include automatic self-cleaning and fabricated pipeline strainers, mechanically cleaned filters and strainers, bag and cartridge filtration systems, and gas liquid separators for industrial customers worldwide.

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