Application Information
Ft. Head x GPM 3960
Ft. Head x GPM 3960
Ft. Head x GPM 3960 x EFF
WHP BHP
WHP = Water Horsepower
BHP = Brake Horsepower
EFF = Pump Efficiency
To determine the approximate horsepower required for an ACE centrifugal pump at a given flow and pressure:
GPM x PSI 1714 x .5
To determine the speed at which a liquid is traveling:
.408 x GPM (pipe diameter)2
To determine the heat generated from by-passed hydraulic oil:
BTU Per Hour = GPM x PSI x 1.48
12,000 BTU/HR = 1 Ton Refrigeration
Weight of one U.S. Gallon of water = 8.34 pounds
One Cubic foot(cu.ft.) of water contains 7.48 gallons
PSI(water) x 2.31 specific gravity
PSI(pounds per square inch) = Feet Head x .433
Specific gravity of water(sp.gr.) = 1.0
Specific Gravity
Water weighs 8.34 lbs./gallon and has a specific gravity of 1. Since specific gravity is a
ratio of the weight of a liquid compared to the weight of water, the specific gravity of a
liquid such as 28% nitrogen fertilizer, which weighs 10.65 lbs./gallon would be figured thus:
10.65 lbs./gallon 8.34 lbs./gallon
| SOLUTION WEIGHT | SPECIFIC GRAVITY | CONVERSION FACTOR |
|---|---|---|
| 8 lbs./gal. 8.34 lbs./gal. 9.0 lbs./gal. | .96 1.0 1.08 | .98 1.0 1.04 |
| 10.0 lbs./gal. 10.65 lbs./gal 11.0 lbs./gal | 1.2 1.28 1.32 | 1.1 1.13 1.15 |
All pump capacities (GPM) in this catalog are based on water. When
pumping fluids that are heavier than water, pump capacity will be less
than stated on each pump performance table. To compensate for pumping
heavy liquids, multiply the required pump capacity in GPM times the
appropriate conversion factor from the above chart.
EXAMPLE: Required pump capacity is 50 GPM of 28% nitrogen fertilizer.
50 x 1.13 = 56.5 GPM
Then select a pump from the preceding pages that will deliver 56.5 GPM
at the desired pressure.
Conversion Factors
| Multiply | By | To Obtain | |
|---|---|---|---|
| LENGTH | inches inches feet miles | 25.40 2.540 0.3048 1.609 | millimeters (mm) centimeters (cm) meters (m) kilometers (km) |
| AREA | acres acres hectares | 4046.7 0.4047 2.471 | square meters (m⊃2) hectares (ha) acres |
| VOLUME | gallons gallons gallons Imperial gallons Imperial gallons U.S. gallons liter pounds water | 3.785 3.785 231 4.546 1.201 .833 0.264 0.119 | cubic decimeters (dm3) liters (L) cubic inches (in³) liters (L) U.S. gallons Imperial gallons gallon gallon |
| FLOW RATE | gallons/hour (gph) gallons/minute (gpm) | 3.785 3.785 | liters/hour (L/h) liters/minute (L/m) |
| APPL. RATE | gallons/acre (gpa) | 9.353 | liters/hectare (L/ha) |
| PRESSURE | pounds per square inch (psi) psi ft. (head) of water inches mercury (Hg) bar kilopascal | 6.895 2.31 0.433 0.491 14.5 0.145 | kilopascals (kPa) ft. (head) of water psi psi psi psi |
| SPEED | miles/hour(mph) kilometers/hour(km/h) | 1.609 0.621 | kilometers/hour(km/h) miles/hour(mph) |
