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Sempell Dewrance Reheater Isolating Device
Dewrance Reheater Isolating Device
These valves provide the facility for hydrostatic test, inspection access, chemical clean and steam blow procedures, yet provide a low pressure loss when in normal service.
Sempell Dewrance Reheater Isolating Device


ASME B31.1, PED, India Boiler Registration, CE
End Connection
Butt Weld
Alloy, Carbon Steel, Metal, Steel
Pressure Class
Shutoff Class
Class V (FCI 70-2)
Valve Size
6 inch (DN150) and Larger
Valve Size Standard
Valve Type
Engineered Product, Gate


  • Minimal parts with full bore seat for optimum performance and low pressure drop
  • Simple isolating closure with one jacking stud
  • Improved performance
  • Low cost isolating device
  • Simple method of isolation with full bore, low pressure drop
  • Ability to enter pipe system through cover for steam purge (chemical clean)
  • Pressure seal bonnet design gives maximum reliability with minimum maintenance
  • No replacement parts required (other than pressure seal)