china 4 dredge pump factory

A clear clean fluid supplied from an external source is normally used which is delivered to the main sealing surface on the fluid side of the sealing process. By using a closed gap throat bushing, the stuffing box can be back-pressurised to a higher pressure, ensuring that the flushing fluid does not flash across the seal face.

Caution: A common mistake is to over-pressurise the box and damage the expensive mechanical seal.

Compared to standard centrifugal pumps, centrifugal pumps optimised for slurry pumping usually have the following features.

As wear is a function of speed, slurry pumps should be operated at the lowest possible speed; units typically run at 1,200 rpm or less. Often, direct coupling between the pump and a low-speed motor or other drive makes the most sense. On the other hand, many other applications favour gearboxes to meet the required speed and operating point. In services where variable flow rates are required, variable frequency drives are used to provide the necessary continuous speed variation.

The company uses advanced computer assistant engineering software to design products and technology, which makes our

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