Application – All Motors
Head Loss From Flow Past Motor
Table 7 lists the approximate head loss due to fl ow between an average length motor and smooth casing or fl ow inducer sleeve.
Table 7 Head Loss in Feet (Meters) at Various Flow Rates
MOTOR DIAMETER
CASING ID IN INCHES (MM)
4" | 4" | 4" | 6" | 6" | 6" | 8" | 8" |
4 (102) | 5 (127) | 6 (152) | 6 (152) | 7 (178) | 8 (203) | 8.1 (206) | 10 (254) |
| 25 | (95) | |
| 50 | (189) | |
| 100 | (378) | |
(l/m) | 150 | (568) | |
200 | (757) | ||
gpm | |||
250 | (946) | ||
in | |||
|
| ||
Rate | 300 | (1136) | |
| |||
Flow | 400 | (1514) | |
500 | (1893) | ||
| |||
| 600 | (2271) | |
| 800 | (3028) | |
| 1000 | (3785) |
0.3(.09)
1.2(.37)
4.7(1.4)
10.2 (3.1)
0.3(.09)
0.6(.18)
1.1(.34)
1.8(.55)
2.5(.75)
0.2(.06)
0.4(.12)
0.7(.21)
1.0(.30)
1.7(.52)
3.7(1.1)
6.3(1.9)
9.6(2.9)
13.6(4.1)
23.7(7.2)
0.5(.15)
0.8(.24)
1.2(.37)
2.0(.61)
3.1(.94)
4.4(1.3)
0.2(.06)
0.4(.12)
0.7(.21)
1.0(.30)
6.8(2.1)
10.4 (3.2)
14.6 (4.5)
24.6 (7.5)
37.3(11.4)
52.2(15.9)
0.6(0.2)
0.8(0.3)
1.5(0.5)
2.4(0.7)
Hot Water Applications (Standard Motors)
Franklin Electric offers a line of
Table 7A Minimum gpm (l/m) Required for 3 ft/s (.91 m/sec) Flow Rate
CASING OR | 4" HIGH | 6" MOTOR | 8" MOTOR | ||||
SLEEVE ID | THRUST MOTOR | ||||||
|
|
|
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INCHES | (MM) | GPM (L/M) | GPM | (L/M) | GPM | (L/M) | |
the motor to drive a pump in over 86 °F (30 °C) water, the motor horsepower must be
1.Using table 7A, determine pump gpm required for different well or sleeve diameters. If necessary, add a fl ow sleeve to obtain at least 3 ft/s fl ow rate.
4
5
6
7
8
10
12
14
16
(102)
(127)
(152)
(178)
(203)
(254)
(305)
(356)
(406)
15(57)
80(303)
160 | (606) | 52 | (197) |
|
| 150 | (568) |
|
| 260 | (984) |
|
| 520 | (1970) |
60(227)
330 (1250)
650 (2460)
1020 (3860)
1460 (5530)
7