Pumps 101
Pumps 101
| Liquid Type: | Specifically: | Application: | Pump Type: |
Water
|
De-ionized →→
——————————
Clean →→
|
Transfer→→→→
Metering→→→→ —————————— Transfer→→→→
Metering→→→→
|
ANSI/Multi-Stage/AOD
Gear/Diaphragm
Centrifugal/Axial/Turbine
Gear/Hose/Diaphragm |
Corrosives |
Acid or Base→→
|
Transfer→→→→
Metering→→→→
|
Centrifugal/Alloy/Plastic
Gear/Mag-Drive Hose/Diaphragm |
Slurries |
Abrasive →→
——————————
Non-Abrasive→→
|
Transfer→→→→
Metering→→→→ —————————— Transfer→→→→
Metering→→→→
|
Hose/Centrifugal/AOD
Hose/AOD
Hose/Gear/Lobe/AOD
Hose/Gear/Lobe/AOD |
Polymers |
“Neat” →→
——————————
“Aged” →→
|
Transfer→→→→
Metering→→→→ —————————— Transfer→→→→
Metering→→→→
|
Gear/Hose/Lobe/AOD
Gear/Diaphragm/Hose
Gear/Diaphragm/Hose/AOD
Gear/Diaphragm/Hose |
Organic Solvents |
Non-Lubricating→→ |
Transfer→→→→ —————————— Metering→→→→ |
Centrifugal/Mag-Drive
Gear/Mag-Drive/Diaphragm |
Important Formulas:
PSI required = TDH x SG / 2.31
Estimated HP = (GPMx8.33xTDHxSG) / 33,000xPump Efficiency
Important Definitions:
PSI = Pounds per square inch; GPM = Gallons per minute of liquid to be pumped
Viscosity = Internal Friction of a liquid (usually measured in centipoises (CPS))
Total Dynamic Head (TDH) = Total head required minus the total suction head (usually measured in feet)
Specific Gravity (SG) = The “density” of a liquid, relative to water, at a specific temperature
Main Types of Pumps:
Centrifugal (Horizontal (ANSI, Self-Priming, API); Vertical (Turbine, Submersible, Split-Case Axial)
Positive Displacement (Gear, Rotary Lobe, AOD, Peristaltic Hose, Diaphragm, Progressive Cavity, Rotary)
In General: Centrifugals are more efficient on 0-100 CPS liquids, Positive Displacements on viscosities > 100 CPS.