Plan 54
Position:
Between inner and outer seal (double seal)
Description:
An external system provides a suitable pressurized barrier fluid for inner and outer seal. The pressure of this barrier fluid is at least 1.4 bar (0.14 MPa) above the pressure in the seal chamber.
The circulation of the barrier fluid is carried out by the external system (e.g. by a circulation pump).
Common use:
Application example:
Sealing of abrasive-containing hydrocarbons at high temperature in pumps with double-acting mechanical seals to eliminate leakage (medium to be sealed) to the atmosphere, as well as for lubrication and cooling of the seal faces.