Page 365 - Mechanical Products Installation Handbook IH-1000M

ENGINEERING REFERENCE 357 Water Feet Head Conversion
Water Pressure to Feet Head
Feet Head of Water to PSI
Pounds Per Square Inch
Feet Head
Pounds Per Square Inch
Feet Head
1
2.31
100
230.90
Feet Head
Pounds Per Square Inch
Feet Head
Pounds Per Square Inch
1
0.43
100
43.31
2 4.62 110 4 9.24 130
253.93 300.16 346.34 392.52 461.78 692.69 922.58 1385.39 1847.20 2309.00
2 0.87 4 1.73 6 2.60 8 3.46 10 4.33 20 8.66 30 12.99 50 21.65 70 30.32 90 38.98
Notes:
• One foot of water • To find the PSI for
110 130 150 170 200 300 400 600 800 1000
47.64 56.30 64.96 73.63 86.62 129.93 173.24 259.85 346.47 433.00
3
6.93
120
277.07
3
1.30
120
51.97
5
11.54
140
323.25
5
2.17
140
60.63
6
8
10
20
30
50
70
90
Notes:
13.85 150 18.47 170 23.09 200 46.18 300 69.27 400 115.45 600 161.63 800 207.81 1000
7
16.16
160
369.43
7
3.03
160
69.29
9
20.78
180
415.61
9
3.90
180
77.96
15
34.63
250
577.24
15
6.50
250
108.27
25
57.72
350
808.13
25
10.83
350
151.58
40
92.36
500
1154.48
40
17.32
500
216.55
60
138.54
700
1616.30
60
25.99
700
303.16
80
184.72
900
2078.10
80
34.65
900
389.78
• The requirements of ANSI, ASME or other code groups may require additional sup- ports. One pound of pressure per square inch of water equals 2.309 feet of water at 62°F.
• To find the Feet Head of Water for any pres- sure not given in the table above, multiply the PSI by 2.309.
at 62°F equals 0.433 PSI. any Feet Head not given in
the table above,
multiply the Feet Head by 0.433.