Toggle disc valves
Basic data:
Plant: Blast Furnace
Country: Germany
Investor: ALSTOM POWER BOILER, Stuttgart
Dimensions: 1300 mm
Problem:
The main aim was to secure the supply of all shut off and modulation dampers required for the blast furnace gas fired boiler unit 4 of the Mittelsbühren powerstation. There were eight required burner safety valves.
Solution:
We created 8 toggle disc valves opened pneumatically. In the “closed” position the sealing element fitted to the valve disc is brought into tight contact with the double landing bar in the casing.
Results:
In the event of power failure or an operational fault the valves are closed within 2.5 seconds. The valve tightness is checked by monitoring the pressure of the nitrogen sealing medium. All valves have been individually DVWG approved.