| Quick
Conversion Factors |
|
Pipe
Flow Guide |
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| Convert From |
Multiply By |
Convert Into |
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Pipe sizes and capacities
are those recommended as good practice for
fluid velocities on hydronic applications.
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| Flow |
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| USGPM |
.0631 |
Litres/second |
|
Pipe Size |
Flow usgpm |
Pipe Size |
Flow usgpm |
| USGPM |
3.785 |
Litres/minute |
|
1 1/2" |
10 - 25 |
5" |
200 - 500 |
| USGPM |
227.3 |
Litres/hour |
|
2" |
20 - 50 |
6" |
330 - 800 |
| Litres/sec. |
15.85 |
USGPM |
|
3" |
55 - 135 |
8" |
700 - 1300 |
| Litres/min. |
.264 |
USGPM |
|
4" |
115 - 275 |
10" |
1250 - 1750 |
| Litres/hour |
.0044 |
USGPM |
|
|
| Cu Ft/sec. |
448.83 |
USGPM |
|
Waterfall
Requirements
(per lineal foot) |
| Cu M/min |
264.2 |
USGPM |
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| Pressure |
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Spill
|
gpm
|
maximum
fall height
|
|
| PSI |
6.895 |
KPA |
|
| PSI |
2.310 |
Ft. Head |
|
0.1" |
5 |
1" |
|
| KPA |
.145 |
PSI |
|
0.2" |
10 |
3" |
|
| KPA |
.334 |
Ft. Head |
|
0.3" |
15 |
4" |
|
| Ft. Head |
2.990 |
KPA |
|
0.4" |
20 |
5" |
|
| Ft. Head |
0.433 |
PSI |
|
0.5" |
25 |
6" |
|
| Ft. Head |
0.305 |
Metric Head |
|
0.6" |
30 |
7" |
|
| Ft. Head |
3.280 |
Ft. Head |
|
0.7" |
35 |
8" |
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0.8" |
40 |
8.5" |
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| Volume |
|
|
|
0.9" |
45 |
9" |
|
| U.S. Gals. |
231.0 |
Cu. In. |
|
1.0" |
50 |
10" |
|
| U.S. Gals |
.1337 |
Cu. Ft |
|
|
| U.S. Gals |
3.785 |
Litres |
|
Example
: To determine the gpm requirements
to a 10 ft. long waterfall with a 3 ft. fall
height; specified with 0.3" spill thickness,
multiply 10 x 15 = 150 gpm |
| U.S. Gals |
.0038 |
Cu. Metres |
|
| Litres |
.2642 |
U.S. Gals |
|
| Litres |
.0353 |
Cu. Ft. |
|
|
| Cu. Metres |
35.311 |
Cu. Ft |
|
Note
: Turbulent
water may require greater flow. Lower pool
should be approximately two times larger than
upper pool to handle start-up and shut-down
variables. |
| Cu. Metres |
264.2 |
U.S. Gals |
|
| Cu. Ft |
7.48 |
U.S. Gals |
|
| Cu. Ft |
28.329 |
Litres |
|
|
| Cu. Ft |
0.028 |
Cu. Metres |
|
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| Weight |
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| US Gals |
8.35 |
Lbs. |
|
|
| Litres |
2.2 |
Lbs. |
|
|
| Cu. Ft of water |
62.46 |
Lbs. |
|
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| Cu. M. water |
22.06 |
Lbs. |
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| Length |
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|
| Inches |
2.54 |
Centimeters |
|
|
| Feet |
.3048 |
Metres |
|
|
| Metres |
39.37 |
Inches |
|
|
| Metres |
3.28 |
Feet |
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| Horsepower |
|
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|
| HP |
.746 |
Kilowatts |
| HP |
745.7 |
Watts |
| Kilowatts |
1.34 |
HP |
| |
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| US Pump Charts |
|
|
| GPM (60 cy) |
.80 |
GPM (50 cy) |
| Head (60 cy) |
.60 |
GPM (50 cy) |
