Pressure adjustment in Centrifugal Pump
- Thread starter Arjun1
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AKKAMAAN
Veteran Member
Centrifugal pumps are pretty limited to "pressure adjustment".
Diameter and RPM is pretty well determining factors in a reachable "head pressure". The impellar basically throws the liquid.
Now if this pump worked fine and started losing developed head, and assuming impellar is fine, wear ring is worn enough that internal leakage may be the biggest problem. I have worked around Sulzer pumps, and some of them have an adjustable wear ring. Packing can also cause some problem to pressure, but most of time it will create cavitation.
Diameter and RPM is pretty well determining factors in a reachable "head pressure". The impellar basically throws the liquid.
Now if this pump worked fine and started losing developed head, and assuming impellar is fine, wear ring is worn enough that internal leakage may be the biggest problem. I have worked around Sulzer pumps, and some of them have an adjustable wear ring. Packing can also cause some problem to pressure, but most of time it will create cavitation.
Egon
Epic Contributor
Some times the impeller is shaved down for less capacity. This is a non reversible operation.
With some types of stacked impeller pumps impellers may be removed. With this type of pump a hole may be drilled through the diffuser?? to reduce capacity.
With impeller pumps flow is usually controlled by a discharge side valve or bypass valve or both.
With some types of stacked impeller pumps impellers may be removed. With this type of pump a hole may be drilled through the diffuser?? to reduce capacity.
With impeller pumps flow is usually controlled by a discharge side valve or bypass valve or both.
