Description: Plan 53A is an
external reservoir,
PRESSURIZED greater than
the seal chamber pressure.
Provides clean BARRIER fluid
to an Arrangement 3 dual
seal. Typically pressure is
provided by nitrogen gas
below 200 psig. Circulation
provided by an internal
pumping ring.
Objective: Provide
favorable environment for
long seal life. Ensure zero
process emissions to environment.
Advantages: Prevents human and
environmental contact with
process. Enhanced cooling
available using cooling coils. Best
for toxic, hazardous, polymerizing,
abrasive fluids and light
hydrocarbons.