API Plans

Plan 41

Description: Plan 41 is recirculation from pump

discharge through a CYCLONE SEPARATOR,

sending clean flush through a seal flush cooler,

then into the seal chamber. Heavy particles are

sent back to pump suction.

Objective: Cool and clean process being sent to

the seal chamber, improving lubricity and

increasing the vapor margin in the seal chamber.

Reduce coking.

Advantages: Provides cooler and cleaner

flush to the seal. When used with a closeclearance

throat bushing, can raise the

pressure in the seal chamber while

preventing erosion to the seal from

abrasive processes.