Plan 41 - Single seals - By-pass from discharge through an abrasive separator & a heat exchanger
Description: Plan 41 is a combination of Plan 21 and Plan 31. In Plan 41, product from pump discharge is first put through an abrasive separator and then to the heat exchanger before being introduced to the seal chamber.
Advantages: Solids are removed and product temperature is reduced to enhance the seal’s environment.
General: Plan 41 is typically used on hot services with solids; however, depending on the temperature of the process, operating costs can be high. This plan should be used for services containing solids that have a specific gravity at least twice that of the process fluid. Typically the separator requires a minimum pressure differential of 15 psi to operate properly.