Steam Ejector Types

Motive Flow Regulated Ejectors

For applications where the process load is varying, the addition of a Motive Flow Regulating Spindle allows the Steam flow to be varied, reducing usage and operating cost. It is also an effective Ejector control option for applications with relatively low compressions where the LP pressure must be maintained under varying flow conditions.

Size 10 SS Ejector c/w Motive Flow regulating spindle
Size 10 SS Ejector c/w Motive Flow regulating spindle

 

Corrosion Resistant Ejectors

Transvac has considerable experience supplying corrosion resistant Vacuum Systems. They are ideal for fine chemical and pharmaceutical applications by virtue of their reliability, simplicity, low capital cost and low maintenance.

Advantages

  • Ideal for large loads
  • Reliable operation
  • Handles slugs of liquid/particles without damage
  • No moving parts
  • Low noise levels
  • Less expensive than mechanical pumps
  • No ATEX considerations
  • Simplicity and low maintenance
  • Easy to retrofit or uprate
  • Overheating not a problem

Materials of Construction

Steam Ejectors can be constructed from exotic materials including PTFE, PVDF, Hastelloy, Graphite, Monel, etc.

Cut through - PFA lined tee, Hastelloy C276 nozzle & Virgin PTFE diffuser
Cut through - PFA lined tee, Hastelloy C276 nozzle & Virgin PTFE diffuser

 

Graphite Ejectors

For highly corrosive applications, the wetted parts can be constructed of Graphite. Unit strength is provided by encasing the graphite with a metalic support shell.

Graphite Ejector, Hastelloy C276 nozzle, CS support shell
Graphite Ejector, Hastelloy C276 nozzle, CS support shell

 

Steam Jacketed Ejectors

To stop solidification of gas components in certain processes (Sulphur in Sulphur Pit Ventilation, for example), Transvac can provide a steam jacket to maintain the Ejector body temperature to eliminate solidification.

Sectioned – Full steam jacket for ‘sticky’ products
Sectioned – Full steam jacket for ‘sticky’ products