Plan 41 in Sealban

API Plan 41 is a cooled version of Plan 31. Solids are removed from the flush fluid by incorporating a cyclone separator. Flow is routed from the discharge side of the pump through the cyclone separator. Clean flush fluid leaving the separator is routed through a cooler before being returned to the seal chamber. Flush fluid containing solids is routed back into the suction side of the pump. In order for Plan 41 to be effective, it is recommended that the specific gravity of the solids be twice the specific gravity of the flush fluid.

This plan:

Removes solids from the flush fluid

Provides clean and cooled flush fluid to the seal chamber

Removes heat from the seal chamber

Ensures proper pressure in the seal chamber in order to prevent pumped fluid from vaporizing

Allows seal chamber to be self-venting when used with horizontal pumps

Plan 41 is available as a kit of components ready for field assembly.