Pump
Will Not Build Pressure |
| Possible
Causes | |
What To Do
| |
|
Poor suction conditions |
| Increase pipe size of liquid
and/or vapor lines. Clean inlet strainer. |
|
|
Bypass valve set too low | |
Set valve for higher pressure. |
|
|
Excessive wear between impeller and stage casing | |
Replace impeller and casing as needed. |
|
|
Insufficient suction pressure and flow | |
Measure inlet pressure and inspect inlet piping. |
|
|
Too much vapor in product stream | |
Check product and pressure drop in inlet piping. |
|
|
NPSH available does not meet requirements | |
Review NPSH. |
Products 
