Centripro, Residential water systems – Xylem BMAID R4 User Manual
Page 43
PAGE 43
Residential Water Systems
CentriPro
1. feet head of water and Equivalent pressures
To change head in feet to pressure in pounds, multiply by .434
feet pSI feet pSI feet pSI feet pSI
head head head head
1 .43 30 12.99 140 60.63 300 129.93
2 .87 40 17.32 150 64.96 325 140.75
3 1.30 50 21.65 160 69.29 350 151.58
4 1.73 60 25.99 170 73.63 400 173.24
5 2.17 70 30.32 180 77.96 500 216.55
6 2.60 80 34.65 190 82.29 600 259.85
7 3.03 90 38.98 200 86.62 700 303.16
8 3.46 100 43.31 225 97.45 800 346.47
9
3.90 110 47.64 250 108.27 900 389.78
10 4.33 120 51.97 275 119.10 1000 433.09
20
8.66 130 56.30
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–
–
–
hEaD aND prESSurE EquIValENtS
2. pressure and Equivalent feet head of water
To change pounds pressure to feet head, multiply by 2.3
pSI feet pSI feet pSI feet pSI feet
head head head head
1 2.31 20 46.18 120 277.07 225 519.51
2 4.62 25 57.72 125 288.62 250 577.24
3 6.93 30 69.27 130 300.16 275 643.03
4 9.24 40 92.36 140 323.25 300 692.69
5 11.54 50 115.45 150 346.34 325 750.41
6 13.85 60 138.54 160 369.43 350 808.13
7 16.16 70 161.63 170 392.52 375 865.89
8 18.47 80 184.72 180 415.61 400 922.58
9 20.78 90 207.81 190 438.90 500 1154.48
10 23.09 100 230.90 200 461.78 1000 2309.00
15
34.63
110
253.98
– – – –
approXImatE CoSt of opEratING ElECtrIC motorS
*average kilowatts input or cost
*av. kw input or cost per hour
motor
based on 1 cent per kilowatt hour motor based on 1 cent per kw hour
hp
hp
1 phase
3 phase
3 phase
1
⁄
3
.408
20
16.9
½
.535
.520
25
20.8
¾
.760
.768
30
26.0
1
1.00
.960
40
33.2
1½
1.50
1.41
50
41.3
2
2.00
1.82
60
49.5
3
2.95
2.70
75
61.5
5
4.65
4.50
100
81.5
7½
6.90
6.75
125
102
10 9.30
9.00
150
122
200
162