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Swagelok Allentown

Your Authorized Swagelok Sales and Service Center

Kit components shown solid and include some optional components.

API Plan 21

API Plan 21 adds a cooler to Plan 11 for applications requiring better control of flush vapor margin. Flow is routed from the discharge side of the pump through an orifice and a cooler before being returned to the seal chamber.

This plan:

  • Provides cooled flush fluid to the process side of the seal
  • Removes heat and flushes particulate from the seal chamber
  • Improves fluid vapor margin in the seal chamber

Plan 21 is available as a kit of components ready for field assembly. Kit contents may include:

  • Swagelok tube fittings
  • Flange adapters
  • Pipe fittings
  • V series 2-valve manifold
  • 63 series ball valve
  • Bimetal thermometer
  • TTW series thermowell tee
  • PGI series gauges
  • Tubing
  • Pressure transmitter
  • Heat exchanger
  • Heat exchanger stand
  • Pipe nipple

See page 19 of the Mechanical Seal Support Systems Application Guide for additional details and ordering information. Contact Swagelok Allentown for information on optional components.