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 21 - Process Side

Product recirculation from discharge through flow control orifice and heat exchanger to seal chamber.

API Plan 22 - Process Side

Product recirculation from pump discharge through a Y strainer, a flow control orifice and a heat exchanger to seal chamber.

API Plan 23 - Process Side

Product recirculation from seal chamber to heat exchanger and back to seal chamber.

API Plan 31 - Process Side

Product recirculation from discharge through a cyclone separator, which directs clean fluid to the seal and solids back to pump suction.

API Plan 32 - Primary Flush

Injection of clean or cool liquid from external source into the seal chamber.

API Plan 41 - Primary Flush

Product recirculation from discharge through a cyclone separator and a heat exchanger to seal chamber.

API Plan 51 - Secondary Flush

External reservoir providing a dead-ended blanket for fluid to the quench connection of the gland.