FORCED CIRCULATION F031
The circulation or flow of buffer or barrier fluid between dual seals by the use of a separate pumping device. The flow should come in the bottom of the stuffing box, between the seals and out the top
The pumping device allows circulation between the seals when the pump is stopped.
All vertical pumps equipped with dual mechanical seals need a forced circulation between the seals.
The opposite of forced circulation would be natural convection through a convection tank installed between dual mechanical seals.