API Piping Plans

The API Seal Plans elaborated in this section are as defined by API 682 4th edition / API 610 10th edition.

These are standardized flushing piping arrangements that are widely used in the industry. Customer specific variants of these plans are possible.

API Piping plans help to ensure good conditions for mechanical seal operation as well as improving safety and pump reliability

Please contact AESSEAL Systems Division for further details. Tel: +44 (0)28 9266 9966 Email: systems@aesseal.com For more information, and a video demonstrating the piping plan in operation, select a plan below

API Plan 52 - Secondary Flush

Depressurised buffer fluid circulation in outboard seal of a dual seal configuration through a seal support system. Circulation is maintained by using pumping ring in running condition and by thermosyphon effect in stand still condition.

API Plan 53A - Secondary Flush

Pressurised barrier fluid circulation in outboard seal of dual seal configuration through a seal support system. Circulation is maintained by using pumping ring in running condition and with thermosyphon effect in stand still condition.

API Plan 53B - Secondary Flush

The AESSEAL® Seal Auxiliary Systems Division has established a pioneering method of developing API Plan 53B Systems. 

API Plan 53C - Secondary Flush

Pressurised barrier fluid circulation in outboard seal of dual seal configuration. Circulation is maintained by using pumping ring in running condition and with thermosyphon effect in stand still condition. The pressure is maintained and fluctuations are compensated in the seal circuit by a piston type accumulator.

API Plan 54 - Secondary Flush

Pressurised external barrier fluid circulation from a central pressure source or by a stand alone pumping unit (e.g. AESSEAL® PUMPPAC™).

API Plan 55 - Secondary Flus

Unpressurised external barrier fluid circulation from a central source.

API Plan 61 - Secondary Flush

Plugged connections for future use for Plan 62 or Plan 65.

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