Plan 52
Position:
Between inner and outer seal (double seal)
Description:
An external reservoir provides a suitable unpressurized buffer fluid for the outer seal. The pressure of this buffer fluid is below the pressure in the seal chamber and at a maximum of 2.8 bar (0.28 MPa).
The circulation of the buffer fluid is carried out by a pump device in the mechanical seal.
Common use:
Application example:
Sealing of hydrocarbons in pumps with double-acting mechanical seals to minimize leakage (medium to be sealed) to the atmosphere and to support heat dissipation.