That could depend on several different factors, such as altitude etc...
I do believe that at about sea level its -14.7 psi.
27.7 "h2o
Inches of mercury x 0.4912 = psi
Inches of water x 0.03613 equals pounds per square inch (psi).
10" Water Column equals about .4 Pounds per Square Inch or 0.36127291827412783psi exactly.
About 2 1 pound per square inch = 2.0362... inches of mercury
27.7 inches
27.71 inches of water column equals 1 psi
14.37 psi is 0.20317789 inches of mercury.
The maximum vacuum pressure in psi that can be achieved by the vacuum pump is 29.92 psi.
33.36 psi
To convert inches of water to psi (pounds per square inch), you can use the conversion factor: 1 inch of water is approximately equal to 0.0361 psi. Therefore, 11 inches of water would be calculated as 11 x 0.0361 psi, which equals approximately 0.3971 psi.
There are 46.15 inches of water in a 20 psi pressure. This can be calculated using the formula: 1 psi = 2.307 feet of water, which is approximately 27.69 inches. 20 psi x 27.69 inches/psi = 46.15 inches.
27.7 "h2o
Inches of mercury x 0.4912 equals psi
There are 1,280 psi in 5 pounds of force.
In a perfect vacuum, the pressure is zero psi.
The pressure measurement of a perfect vacuum is 0 psi.