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Pumps and Meters • Liquid Fill Systems • What's New at ACI
Flow and Pressure Limits of Positive Displacement Pumps
| |
Flow (GPM) |
Pressure (PSI) |
| Pumping Principle |
Minimum |
Maximum |
Maximum |
| Internal Gear |
.5 |
1500 |
400 |
| External Gear |
.001 |
1500 |
3000 |
| Lobe |
4 |
3000 |
225 |
| Vane |
5 |
2000 |
150 |
| Three Screw |
1 |
3400 |
4500 |
| Timed Two Screw |
20 |
5000 |
1500 |
| Progressing Cavity |
2 |
2400 |
1500 |
| Hydraulic Diaphragm |
.001 |
70 |
6000 |
| Air Operated Diaphragm |
.5 |
300 |
125 |
Temperature and Viscosity Limits of Positive Displacement Pumps
| |
Temperature
(Degrees F) |
Viscosity (CPS) |
| Pumping Principle |
Maximum |
Minimum |
Maximum |
| Internal Gear |
800 |
.1 |
1,000,000 |
| External Gear |
500 |
.1 |
1,000,000 |
| Lobe |
350 |
.1 |
100,000 |
| Vane |
225 |
.1 |
25,000 |
| Three Screw |
500 |
.1 |
100,000 |
| Timed Two Screw |
650 |
.1 |
250,000 |
| Progressing Cavity |
350 |
.1 |
1,000,000 |
| Hydraulic Diaphragm |
800 |
.1 |
10,000 |
| Air Operated Diaphragm |
212 |
.1 |
17,500 |
Abrasion, Solids and Shear Sensitive Liquid Handling Capacity for Positive Displacement Pumps
| |
Ability to Handle: |
| Pumping Principle |
Abrasive
Liquids |
Liquids
With Solids |
Shear Sensitive
Liquids |
| Internal Gear |
X |
|
X |
| External Gear |
|
|
|
| Lobe |
|
X |
X |
| Vane |
|
|
|
| Three Screw |
|
|
|
| Timed Two Screw |
X |
X |
X |
| Progressing Cavity |
X |
X |
X |
| Hydraulic Diaphragm |
X |
X |
X |
| Air Operated Diaphragm |
X |
X |
X |
Ability of Positive Displacement Pumps to Handle Dry Running and Two Phase Flow
| |
Ability to Handle: |
| Pumping Principle |
Dry Running |
Two Phase Flow |
| Internal Gear |
|
|
| External Gear |
X |
X |
| Lobe |
|
|
| Vane |
|
|
| Three Screw |
|
|
| Timed Two Screw |
X |
X |
| Progressing Cavity |
|
X |
| Hydraulic Diaphragm |
X |
X |
| Air Operated Diaphragm |
X |
X |
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