Leakage standards for pump packing seals
Thread Content
There is a vertical centrifugal pump with a shaft diameter of 90; a shaft sleeve of 110 is used, and the shaft seal is a packing seal. I would like to ask about the standards regarding the leakage amount – could you recommend any relevant standards?
Allowable leakage rate for shaft packing seal: Water: 8–20 ml/min
Where possible, it should be changed to a mechanical seal to prevent leakage.
For packing seals, regarding the leakage rate, the chemical industry requires that for light fluids it be less than 20 drops per minute, and for heavy fluids less than 10 drops per minute
Light oil: not more than 20 drops per minute； For heavy oil, the flow rate should be no more than 10 drops per minute; in fact, as long as it doesn’t form a stream, that’s fine. As for water, it should be directed into the drainage ditch on site – keeping the area clean is very important
Light oil: not more than 20 drops per minute； For heavy oil, the flow rate should be no more than 10 drops per minute; in fact, as long as it doesn’t form a stream, that’s fine. As for water, it should be directed into the drainage ditch on site – keeping the area clean is very important
Is there any relevant standard supporting this 8-20 ml/min range? If there are 20 drops per 1 ml, that means 160–400 drops per minute – isn’t that too fast?