Products

API Plan 71

Plan 71

Tapped connections for the purchaser’s use e.g., for future use of buffer gas.

A  Connection plugged

Seal chamber details

1  Flush (F)
2  Containment seal vent (CSV), plugged
3  Containment seal drain (CSD), plugged
4  Gas buffer inlet (GBI), plugged
5  Seal chamber


Example seal: EagleBurgmann LL9DTUE dual pusher mechanical seal.

P&ID according to API

Key

2  Containment seal vent (CSV), plugged
3  Containment seal drain (CSD), plugged
4  Gas buffer inlet (GBI), plugged

Features

  • When a gas buffer is to be provided, the GBI port can be converted to Plan 72.
  • The CSV connection is piped to connect to vent when converted to Plan 76.
  • The CSD connection is piped to collect condensate when converted to Plan 75.

Application

  • May be used for flashing as well as non-flashing services.
  • For contacting or non-contacting containment seals where provision for future use of Plans 72, 75 or 76 is desired.

 

 

Remarks, checkpoints

  • Ensure that the ports are plugged with metallic plugs when a Plan 72, 75 or 76 is not connected.
  • Ensure that the CSV port is oriented to the 12 o'clock position and CSD to the 6 o'clock position.

 

 

Pump media characteristics

  • Hazardous / environmentally harmful
  • High vapor pressure fluids
  • Clean non-polymerizing fluids
  • Fluids condensing or vaporizing at ambient temperatures.

Location, function

  • Between seals

Configurations

2CW-CS, 2NC-CS

 

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