Plan 22 in Sealban

API Plan 22 adds a strainer to Plan 21. Flow is routed from the discharge side of the pump, through a strainer, an orifice, and a cooler before being returned to the seal chamber. The addition of pressure gauges on either side of the strainer allows the strainer to be monitored for servicing. In dry climates, air-cooled tubing arrangements are preferred to reduce common issues associated with water cooled systems.

This plan:

Prevents orifice clogging through the addition of a strainer

Provides cooled flush fluid to the process side of the seal

Removes heat and flushes particulate from the seal chamber

Improves vapor pressure margin in the seal chamber

Plan 22 is available as a kit of components ready for field assembly.