Checks to be done for Purifier over flowing

* Size of gravity disc.
* High throughput.
* Temperature of the oil.
* Operating water level in tank.
* Sealing water is not present in purifier.
* Bowl is not closed properly.
* Seal ring is damaged.
* By mistake if bowl opening water is feeded.
* Increasing the specific gravity of the oil will tend to push the interface outlet and cause overflow from the heavy phase outlet until the equilibrium is restored.