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Swagelok Quebec Group

Your Authorized Swagelok Sales and Service Center

API Plan 11 Flush

API Plan 11 recirculates flow from a high‐pressure section of the pump, typically the discharge piping, through a flow control orifice to the seal. Plan 11 is the default flush plan for most pumps.

plan 11 rsz 

Benefits:

  • Removes heat from the seal chamber
  • Ensures proper pressure in the seal chamber in order to prevent pumped fluid from vaporizing
  • Allows seal chamber to be self-venting when used with horizontal pumps

See page 7 of the Mechanical Seal Support Systems Applications Guide for additional details.

Questions?

Contact your local distributor