Products

API Plan 75

API Plan 75

A containment seal chamber leakage collection system for condensing or mixed phase leakage on arrangement 2 unpressurized seals with containment seals.

A  From mechanical seal
B  To vapor collection system
C  Drain

Seal chamber details

4  Flush (F)
5  Containment seal vent (CSV), plugged
6  Containment seal drain (CSD)
7  Gas buffer inlet (GBI), plugged unless used with a Plan 72
8  Seal chamber


Example seal: EagleBurgmann H75A4-C dual pusher mechanical seal.

P&ID according to API

Key

1  To vapor collection system
2  To liquid collection system
3  Test connection (if specified)
5  Containment seal vent (CSV), plugged
6  Containment seal drain (CSD)
7  Gas buffer inlet (GBI), plugged unless used with a Plan 72


LI  Level indicator
LIT  Level transmitter with local indicator
PIT  Pressure transmitter with local indicator


* If specified

Features

  • This plan can be used with buffer gas (Plan 72) or without buffer gas (Plan 71).
  • Avoids direct leakage of pumped media to the atmosphere.
  • Liquid leakage is collected in the leakage collector and vapors pass to the collection system.
  • Excessive leakage and the use of an orifice in the outlet line of the collector together leads to a pressure build-up in the collector and triggers a pressure alarm at 0.7 bar (10 PSI) with the help of a pressure transmitter.

Application

  • For condensing media.
  • For configurations utilizing an outboard containment seal – contacting or non-contacting type.
  • Generally used in combination with a Plan 72 nitrogen purge.

Remarks, checkpoints

  • Set the pressure transmitter alarm to a pressure of 0.7 bar (10 PSI) so as to trigger an alarm when the pressure in the leakage collector increases. This indicates inboard seal leakage.
  • Ensure that the vent line is always open and an orifice is present to generate back pressure.
  • Always mount the leakage collection system below the pump centerline.
  • Use sloping lines from the CSD port to the leakage collector.
  • Use the level gauge to ascertain if the leakage collector needs to be drained.

Pump media characteristics

  • Hazardous / environmentally harmful (generally in combination with additional API plan).
  • Clean non-polymerizing fluids
  • Fluids condensing at ambient temperatures.

Location, function

  • Between seals
  • Leakage alarm and collection

Configurations

2CW-CS

 

API 682 4th Edition

Contact us

Follow the direct link to your API 682 4th ed. contact

Show locations

API piping plan tool

Download the free EagleBurgmann API piping plan tool and benefit from useful and practical information

PDF download - 4.0 MB
Newsletter

Excellence in Practice

With our free e-mail newsletter „Excellence in Practice“, you will receive first-hand information about current products, services, references and worthwhile industry insights.

The Eagleburgmann Group

Sealing technology for plants and machines

EagleBurgmann is one of the worldwide leading providers of industrial sealing technology. Mechanical seals, seal supply systems, magnetic couplings, carbon floating ring seals, expansion joints, gaskets and packings as well as comprehensive services are used wherever reliability and safety are needed.

Mechanical seals and more

Sealing technology by EagleBurgmann is used worldwide in oil and gas industries, refineries, the petrochemical, chemical, and pharmaceutical industries, food processing, energy, water, mining, paper, aerospace, and other industries. Close to 5,800 employees provide their ideas, solutions, and commitment so that customers can rely on our sealing technology.

What makes us stand out is our excellent quality, great innovative capacity, and an extensive product portfolio for nearly all industrial processes and fields of application. Our product portfolio includes everything from mechanical seals and seal supply systems to magnetic couplings, carbon floating ring seals, expansion joints, and gaskets and packings as well as comprehensive services. Since we are part of the German Freudenberg and Japanese EKK group, we have all the necessary resources for a firmly based reliable partnership.

EagleBurgmann WORLDWIDE