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Sempell Model VS99 Pilot Operated Safety Valve
Sempell VS99 Pilot Operated Safety Valve
Operated by steam pilots VS66 and/or solenoid pilots EMS.
Medium operated safety valve for extra large capacities
Preferred solution for Russian GOST boiler applications
Sempell Model VS99 Pilot Operated Safety Valve

Specs

Accessories:
Position indicator, vacuum spring

Features

  • High Tightness, because system pressure acts in closing direction
  • Small opening and closing pressure differences
  • Blow down widely adjustable
  • High setting accuracy and reproducibility
  • Function nearly independent from pressure losses in connected pipes
  • Opening of the safety valve also below set pressure possible
  • Test setting of safety valve during normal plant operation
  • Test of the control function without opening of the safety valve