Description: Plan 62 is an external source
supplying quench (nitrogen, water,
steam, etc.) on the atmosphere side of
the seal. Typically used with a throttle
bushing or auxiliary sealing device for
Objective: To reduce oxidation, coking or
crystallization of process accumulating on
the atmospheric side of the seal.
Advantages: Utilizes miniscule flow
rate of water or only a “whisper” of
nitrogen or steam (2‐4 psi). Can also
provide some heating or cooling.