UNITS OF MEASURE ENGINEERING DATA
UNITS OF PRESSURE
POUNDS PER SQUARE INCH
INCHES OF MERCURY
UNIT
INCHES OF WATER
FEET OF WATER
INCHES OF WATER FEET OF WATER
1.0
.0833
.0361
.0736
12.0
1.0
.433
.883
POUNDS PER SQUARE INCH
27.72
2.31
1.0
2.04
INCHES OF MERCURY
13.596
1.133
.4906
1.0
pressure (psi) x 144 62.4
H =
PRESSURE AND EQUIVALENT FEET HEAD OF WATER
Lbs. per Sq. In.
Lbs. per Sq. In.
Lbs. per Sq. In.
Lbs. per Sq. In.
Feet Head
Feet Head
Feet Head
Feet Head
1 2 3 4 5 6 7 8 9
2.31 4.62 6.93 9.24
20 25 30 40 50 60 70 80 90
46.18 57.72 69.27 92.36
120 125 130 140 150 160 170 180 190 200
276.42 288.46 300.00 323.08 346.15 369.23 392.31 415.38 438.46 461.54
225 250 275 300 325 350 375 400 500
519.23 576.92 634.62 692.31 750.00 807.69 865.38 923.08 1153.85 2307.69
11.54 13.85 16.16 18.47 20.78 23.09 34.63
115.38 138.46 161.53 184.62 207.69 230.77 253.85
10 15
100 110
1000
532
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