The self-seal design option In The Perfect Industrial vertical turbine pumps

Advantages

The unique self-seal design option In The Perfect Industrial vertical turbine pumps eliminates the most common points of failure: the packing or a mechanical seal. This problem-solving sealing method reduces maintenance downtime and eliminates the potential for hazardous leakage and dangerous operating conditions.

How it Works

The shaft above the self-seal case is enclosed in a tube isolated from the fluid. A non-rotating O-ring seals this shaft-enclosing tube. As the pumped solution passes up through the lower column assembly, it enters the self-seal column case, located below the discharge head. The self-seal column case throttles the fluid pressure, diverting liquid away from the shaft-enclosing tube.

A minimal amount of fluid flows past the lower bushing into the self-seal case. A stainless steel slinger in the self-seal column case directs this fluid to the pump’s bypass ports. Any fluid that flows past the lower bushing in the self-seal case is vented back to the tank or well.

From the self-seal case upward, the shaft is enclosed in a dry tube away from the fluid, making it impossible for leaks to occur at the point the shaft passes out of the discharge head.