What is 7 inches of water column in PSI?

One inch of water column is equal to a pressure of approximately 1/28 pound per square inch (psi). Stating this another way, a column water 28-inches high produces pressure that is equal to 1 psi.

Inches Water Column | Petroleum Equipment Institute

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There are 27.7 inches of water column (wc) pressure in 1 PSI of pressure. So 7"wc is about 1/4 PSI. This is the normal pressure that household natural gas is delivered.

What is 7 inches of water column in PSI?

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Inches Water Column | Petroleum Equipment Institute

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